IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 1 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF MEAN DAILY TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MAX-MIN 1961 3.1 4.8 10.3 14.7 23.1 26.6 28.1 25.0 21.9 16.5 7.4 8.4 25.0 1962 5.3 10.1 13.2 17.3 23.4 24.9 27.7 23.8 20.2 18.7 3.4 3.0 24.7 1963 10.0 10.0 10.3 14.1 20.8 26.6 28.1 25.6 24.2 22.1 19.7 8.9 19.2 1964 -0.2 7.6 12.7 15.8 20.7 23.3 25.2 25.2 23.5 16.3 10.2 -1.3 26.5 1965 3.9 6.1 10.3 14.3 22.3 25.7 28.4 26.2 23.7 22.2 14.9 9.1 24.5 1966 7.1 9.5 10.3 14.7 20.1 25.3 26.8 26.5 23.6 20.2 12.8 4.3 22.5 1967 4.0 3.5 9.9 11.8 20.8 26.6 27.4 27.1 25.7 19.8 16.3 8.9 23.9 1968 5.5 3.9 9.1 15.8 20.8 25.7 26.5 27.0 23.8 18.4 14.4 9.1 23.1 1969 2.3 5.3 13.4 15.6 22.9 26.6 28.0 26.9 22.8 19.5 8.1 7.3 25.7 1970 3.8 8.0 10.5 19.2 25.2 27.7 27.9 ****** ****** 18.1 13.3 5.9 ****** 1971 3.3 6.5 13.8 17.5 25.0 28.2 27.9 26.9 21.3 ****** ****** ****** ****** 1972 0.3 -2.0 10.5 16.5 20.1 28.5 26.9 23.8 22.1 17.8 ****** 3.1 ****** 1973 0.5 9.0 11.0 18.1 23.7 29.5 29.6 26.5 22.5 17.0 10.0 3.7 29.1 1974 1.0 1.7 ****** ****** ****** ****** 29.4 26.5 22.5 13.9 11.6 4.5 ****** 1975 2.9 6.3 11.3 15.2 22.6 24.4 26.7 ****** 21.0 15.9 8.3 5.4 ****** 1976 5.0 ****** ****** ****** ****** ****** ****** ****** 24.6 15.6 7.6 4.3 ****** 1977 -1.1 6.9 16.7 17.0 22.2 24.8 25.5 23.4 18.9 13.7 9.8 4.1 26.6 1978 1.0 4.6 8.0 16.8 21.8 25.3 24.6 24.0 20.7 17.5 8.4 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 2.2 4.0 10.6 18.1 22.5 26.4 26.9 25.4 22.1 17.3 12.8 7.8 24.7 1981 4.9 7.1 12.8 17.9 22.5 25.3 26.8 25.6 22.5 16.0 12.3 8.2 21.9 1982 4.5 4.1 9.0 18.0 23.3 26.7 28.1 26.7 22.0 16.8 8.1 1.8 26.3 1983 3.2 ****** 8.7 14.4 22.5 26.5 28.8 27.2 22.6 15.9 11.8 4.3 ****** 1984 2.4 1.9 11.6 17.5 ****** 25.0 27.9 28.1 21.8 16.6 ****** ****** ****** 1985 ****** 8.4 9.7 18.6 23.0 28.6 29.9 25.2 22.4 17.6 11.0 5.7 ****** 1986 4.4 5.2 6.5 16.4 22.8 ****** ****** ****** 22.1 19.1 8.8 3.1 ****** 1987 ****** 6.7 12.4 18.0 23.9 26.2 27.9 27.1 23.5 13.7 11.5 6.6 ****** 1988 4.1 6.1 11.4 18.2 24.2 28.8 30.2 27.1 23.6 17.2 12.4 7.3 26.1 1989 0.8 1.7 11.2 17.2 21.3 28.5 29.5 26.2 23.3 18.3 10.8 7.4 28.7 1990 2.5 5.2 10.8 17.4 25.1 29.1 28.6 28.4 23.9 17.1 12.5 5.0 26.6 1991 3.9 4.5 9.8 17.6 21.9 27.2 28.7 26.7 22.9 16.6 10.9 6.6 24.8 1992 2.5 6.5 7.5 15.9 ****** 28.0 28.2 25.4 21.3 16.1 12.0 6.2 ****** 1993 1.0 7.0 9.2 18.0 22.8 27.5 28.0 26.0 23.9 14.7 10.5 6.2 27.0 1994 5.4 5.6 13.1 17.8 23.9 28.6 29.2 28.6 19.6 16.3 14.5 4.9 24.3 1995 5.7 7.3 10.8 17.3 21.9 27.6 31.0 28.6 23.2 16.9 12.5 3.9 27.1 1996 2.6 7.0 9.9 17.4 22.7 28.0 28.3 26.9 26.0 17.4 9.6 6.8 25.7 1997 5.8 5.6 10.0 17.1 22.5 29.0 30.3 27.6 24.2 19.5 10.1 6.0 24.7 1998 3.9 5.9 11.9 19.2 22.7 26.6 30.0 28.5 24.3 18.2 13.5 9.3 26.1 1999 4.3 9.8 10.6 17.5 23.4 29.2 28.9 28.0 23.7 19.0 10.5 7.1 24.9 2000 4.6 6.4 11.4 21.9 27.1 26.8 27.7 26.9 24.8 17.8 9.5 6.3 23.1 MEAN 3.4 5.9 10.8 16.9 22.7 26.9 28.1 26.4 22.8 17.4 11.2 5.8 24.7 SD 2.18 2.53 1.90 1.80 1.51 1.56 1.43 1.38 1.55 1.95 2.90 2.33 1.92 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 2 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 -4.0 -2.7 2.1 7.5 14.4 17.5 19.6 16.2 13.3 7.9 -0.4 0.4 7.6 1962 -2.2 3.3 5.8 10.1 15.1 16.8 18.9 13.7 11.1 10.4 -3.1 -3.9 8.0 1963 3.0 3.3 2.8 7.0 15.3 16.9 19.1 15.5 13.3 11.4 8.2 2.0 9.8 1964 -12.0 -1.1 4.9 5.3 8.3 10.5 12.4 12.7 12.5 6.2 -0.6 -12.5 3.9 1965 -3.2 -4.0 0.2 3.3 11.8 15.2 18.6 15.9 13.7 12.0 5.4 2.5 7.6 1966 0.9 1.7 2.9 5.9 11.1 13.0 15.0 15.8 13.8 10.1 2.7 -5.6 7.3 1967 -6.3 -5.3 3.7 6.3 13.5 16.1 17.5 17.1 16.0 9.5 6.6 -2.5 7.7 1968 -2.9 -2.8 3.2 6.6 10.0 14.5 15.6 16.4 12.0 7.0 6.1 2.2 7.3 1969 -3.3 -1.8 4.1 6.9 14.2 17.5 18.3 17.6 13.8 10.8 1.4 0.0 8.3 1970 -2.1 0.4 3.7 11.1 16.8 19.6 20.4 ****** ****** 8.9 4.5 -1.1 ****** 1971 -3.9 -1.3 5.3 9.9 16.8 20.1 19.8 18.4 12.5 ****** ****** ****** ****** 1972 -3.6 -7.9 4.5 9.3 12.5 20.2 20.5 14.5 13.3 10.9 ****** -3.0 ****** 1973 -6.3 2.0 3.8 9.0 14.9 20.5 20.3 16.6 12.3 7.2 1.3 -4.6 8.1 1974 -4.9 -2.5 ****** ****** ****** ****** 20.8 17.0 13.2 4.9 2.8 -2.2 ****** 1975 -2.9 0.2 3.2 7.2 12.9 12.1 13.5 ****** 12.0 5.5 -0.8 -2.7 ****** 1976 -1.0 ****** ****** 7.7 13.5 15.2 20.8 22.6 14.6 7.3 -0.9 -2.1 ****** 1977 -5.9 -1.3 6.5 8.4 11.8 11.9 12.8 10.0 4.9 1.5 -3.8 -7.0 4.2 1978 -9.8 -6.4 -1.5 5.0 9.9 14.2 11.8 13.0 8.3 7.1 1.1 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 -3.5 -2.5 3.4 8.8 11.8 15.2 15.9 14.0 11.3 7.8 4.3 0.1 7.2 1981 -1.8 0.4 4.6 8.6 13.4 15.8 16.9 15.8 12.7 7.2 3.9 0.6 8.2 1982 -1.6 -1.2 2.0 9.2 14.2 16.6 18.4 16.7 11.6 8.6 1.7 -4.0 7.7 1983 -2.7 ****** 0.8 6.5 12.9 16.0 17.6 16.4 11.5 5.0 1.6 -3.3 ****** 1984 -5.5 -5.7 3.0 7.5 ****** 14.2 17.8 17.4 11.8 7.1 ****** ****** ****** 1985 ****** -0.1 2.2 9.9 14.0 19.8 21.6 16.4 12.3 8.9 3.6 0.3 ****** 1986 -1.5 0.1 1.5 9.7 14.6 18.6 19.6 16.9 13.2 10.5 4.1 -1.1 8.8 1987 ****** -0.1 5.8 11.1 16.5 18.5 20.3 18.9 15.4 6.4 4.3 -0.3 ****** 1988 -1.3 0.7 5.4 11.6 16.5 21.0 23.2 20.1 15.6 9.1 5.2 1.4 10.7 1989 -4.6 -2.9 5.1 9.7 14.2 21.2 22.3 18.2 14.5 9.7 4.4 2.0 9.5 1990 -1.6 0.8 4.2 10.6 17.6 21.7 21.3 20.8 15.2 9.3 4.7 -0.4 10.4 1991 -0.5 -0.2 5.4 11.3 15.0 19.8 21.2 18.6 15.1 9.1 4.1 2.3 10.1 1992 -1.6 1.2 2.0 9.7 ****** 21.2 20.6 18.6 13.1 8.1 4.9 2.3 ****** 1993 -3.6 2.7 4.1 11.7 16.4 20.4 21.1 18.8 16.1 7.2 4.3 0.3 10.0 1994 0.2 -0.6 6.9 11.3 17.4 22.0 21.9 21.2 12.4 9.8 8.5 -0.5 10.9 1995 0.2 2.0 4.9 11.5 15.5 20.7 24.0 20.8 15.1 9.4 5.3 -0.3 10.7 1996 -2.7 1.5 5.3 11.1 16.1 21.2 21.4 19.4 17.7 10.1 2.9 0.7 10.4 1997 0.5 -1.1 4.3 11.1 15.9 22.4 23.0 19.7 16.5 12.5 4.9 1.9 11.0 1998 -0.1 0.9 6.1 12.5 16.1 19.7 23.2 21.6 16.6 10.3 6.0 2.6 11.3 1999 -0.2 4.1 5.8 11.1 16.4 21.8 22.4 20.3 15.8 11.1 5.3 0.8 11.2 2000 -0.7 0.5 4.5 14.4 19.5 19.7 20.4 19.1 17.3 10.8 4.1 1.8 11.0 MEAN -2.8 -0.7 3.9 9.1 14.4 17.9 19.2 17.4 13.5 8.6 3.3 -0.9 8.6 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 3 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF MAXIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 10.2 12.3 18.6 21.8 31.9 35.7 36.6 33.8 30.4 25.1 15.1 16.5 24.0 1962 12.9 16.9 20.6 24.6 31.8 33.1 36.4 34.0 29.3 27.1 10.0 9.8 23.9 1963 16.9 16.8 17.8 21.3 26.3 36.3 37.1 35.8 35.0 32.8 31.2 15.7 26.9 1964 11.6 16.4 20.4 26.3 33.2 36.0 37.9 37.6 34.4 26.3 21.1 9.9 25.9 1965 11.1 16.2 20.5 25.3 32.9 36.1 38.1 36.5 33.6 32.3 24.3 15.6 26.9 1966 13.2 17.3 17.7 23.5 29.1 37.5 38.6 37.1 33.4 30.3 22.8 14.2 26.2 1967 14.3 12.2 16.2 17.4 28.1 37.1 37.4 37.0 35.5 30.0 25.9 20.3 25.9 1968 13.8 10.7 15.0 25.0 31.6 36.9 37.3 37.6 35.6 29.8 22.6 15.9 26.0 1969 7.9 12.4 22.7 24.3 31.7 35.7 37.7 36.2 31.8 28.2 14.9 14.6 24.8 1970 9.7 15.5 17.3 27.2 33.6 35.8 35.8 37.4 30.6 27.3 22.1 13.0 25.4 1971 10.5 14.4 22.2 25.1 33.3 36.3 36.1 35.3 30.2 26.6 19.8 14.1 25.3 1972 4.2 4.0 16.4 23.7 27.6 36.8 33.6 32.7 30.8 25.3 ****** 9.2 ****** 1973 7.3 15.9 18.1 27.1 32.5 38.4 38.8 36.3 32.5 26.9 18.8 12.0 25.4 1974 6.9 6.0 ****** ****** ****** ****** 37.9 35.9 31.8 22.9 20.4 11.3 ****** 1975 8.7 12.4 19.4 23.3 32.4 36.7 39.8 ****** 30.1 26.3 17.3 13.4 ****** 1976 11.1 ****** ****** ****** ****** ****** ****** ****** 34.7 23.9 16.1 10.6 ****** 1977 3.8 15.1 26.8 25.7 32.5 37.6 38.1 36.8 32.8 25.8 23.3 15.3 26.1 1978 12.0 15.7 18.0 28.5 33.6 36.4 37.5 35.1 33.1 27.9 15.7 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 8.0 10.4 17.8 27.4 33.2 37.5 37.9 36.8 32.9 26.9 21.3 15.4 25.5 1981 11.7 13.7 21.2 27.1 32.0 35.0 37.4 35.4 32.8 24.9 20.8 15.8 25.6 1982 10.6 9.5 15.9 26.9 32.4 36.8 37.7 36.8 32.5 25.1 14.4 7.7 23.9 1983 9.0 14.3 16.6 22.2 32.2 37.0 40.0 38.1 33.4 26.7 21.9 12.0 25.3 1984 10.5 9.3 20.3 27.5 ****** 35.8 38.1 38.8 31.9 25.8 ****** ****** ****** 1985 ****** 17.3 17.0 27.5 31.8 37.6 38.4 33.8 32.5 26.3 18.6 11.1 ****** 1986 9.8 9.8 11.6 23.0 31.0 ****** ****** ****** 31.0 27.2 14.7 7.6 ****** 1987 ****** 13.5 19.1 24.9 31.3 33.9 35.5 35.3 31.5 21.0 18.7 13.4 ****** 1988 9.5 11.5 17.4 24.8 31.8 36.5 37.1 34.2 31.5 25.3 19.6 13.2 24.4 1989 6.2 6.3 17.4 24.6 28.4 35.8 36.6 34.2 32.0 26.9 17.1 12.8 23.2 1990 6.6 9.5 17.4 24.1 32.5 36.5 35.9 36.0 32.6 25.1 20.2 10.4 23.9 1991 8.3 9.2 14.2 24.0 28.8 34.5 36.1 34.7 30.7 24.0 17.8 11.1 22.8 1992 6.6 11.9 12.9 22.1 ****** 34.7 35.8 32.3 29.5 24.1 19.0 10.0 ****** 1993 5.7 11.3 14.2 24.2 29.2 34.7 35.0 33.3 31.8 22.2 16.8 12.1 22.5 1994 10.6 11.8 19.2 24.3 30.4 35.2 36.4 35.9 26.9 22.7 20.6 10.3 23.7 1995 11.3 12.6 16.6 23.2 28.3 34.6 38.1 36.3 31.4 24.5 19.8 8.0 23.7 1996 7.9 12.5 14.4 23.7 29.3 34.9 35.1 34.3 34.3 24.8 16.3 12.8 23.4 1997 11.1 12.3 15.7 23.1 29.2 35.5 37.7 35.5 32.0 26.4 15.2 10.1 23.6 1998 7.9 10.9 17.7 25.9 29.4 33.6 36.8 35.4 32.0 26.1 20.9 15.9 24.4 1999 8.8 15.5 15.3 24.0 30.5 36.7 35.3 35.8 31.6 26.8 15.6 13.3 24.1 2000 10.0 12.2 18.2 29.5 34.7 34.0 34.9 34.7 32.3 24.9 14.9 10.8 24.3 MEAN 9.6 12.5 17.8 24.7 31.1 35.9 37.0 35.6 32.1 26.2 19.1 12.6 24.5 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 4 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 14.2 15.0 16.5 14.3 17.5 18.2 17.0 17.6 17.1 17.2 15.5 16.1 16.3 1962 15.1 13.6 14.8 14.5 16.7 16.3 17.5 20.3 18.2 16.7 13.1 13.7 15.9 1963 13.9 13.6 15.0 14.3 11.0 19.4 18.0 20.3 21.7 21.4 23.0 13.7 17.1 1964 23.6 17.5 15.5 21.0 24.9 25.5 25.5 24.9 21.9 20.1 21.7 22.4 22.0 1965 14.3 20.2 20.3 22.1 21.1 20.9 19.5 20.6 19.9 20.3 18.9 13.1 19.3 1966 12.3 15.6 14.8 17.6 18.0 24.5 23.6 21.3 19.6 20.2 20.1 19.8 18.9 1967 20.6 17.5 12.5 11.1 14.6 21.0 19.9 19.9 19.5 20.5 19.3 22.8 18.3 1968 16.7 13.5 11.8 18.4 21.6 22.4 21.7 21.2 23.6 22.8 16.5 13.7 18.7 1969 11.2 14.2 18.6 17.4 17.5 18.2 19.4 18.6 18.0 17.4 13.5 14.6 16.5 1970 11.8 15.1 13.6 16.1 16.8 16.2 15.4 ****** ****** 18.4 17.6 14.1 ****** 1971 14.4 15.7 16.9 15.2 16.5 16.2 16.3 16.9 17.7 ****** ****** ****** ****** 1972 7.8 11.9 11.9 14.4 15.1 16.6 13.1 18.2 17.5 14.4 ****** 12.2 ****** 1973 13.6 13.9 14.3 18.1 17.6 17.9 18.5 19.7 20.2 19.7 17.5 16.6 17.3 1974 11.8 8.5 ****** ****** ****** ****** 17.1 18.9 18.6 18.0 17.6 13.5 ****** 1975 11.6 12.2 16.2 16.1 19.5 24.6 26.3 ****** 18.1 20.8 18.1 16.1 ****** 1976 12.1 ****** ****** ****** ****** ****** ****** ****** 20.1 16.7 17.0 12.7 ****** 1977 9.6 16.4 20.3 17.3 20.7 25.7 25.3 26.8 27.9 24.3 27.1 22.3 22.0 1978 21.8 22.1 19.5 23.5 23.7 22.2 25.7 22.1 24.8 20.8 14.6 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 11.5 12.9 14.4 18.6 21.4 22.3 22.0 22.8 21.6 19.1 17.0 15.3 18.2 1981 13.5 13.3 16.6 18.5 18.6 19.2 20.5 19.6 20.1 17.7 16.9 15.2 17.5 1982 12.2 10.7 13.9 17.7 18.2 20.2 19.3 20.1 20.9 16.5 12.7 11.7 16.2 1983 11.7 ****** 15.8 15.7 19.3 21.0 22.4 21.7 21.9 21.7 20.3 15.3 ****** 1984 16.0 15.0 17.3 20.0 ****** 21.5 20.3 21.4 20.2 18.7 ****** ****** ****** 1985 ****** 17.4 14.8 17.6 17.8 17.8 16.8 17.4 20.2 17.4 15.0 10.8 ****** 1986 11.3 9.7 10.1 13.3 16.4 ****** ****** ****** 17.8 16.7 10.6 8.7 ****** 1987 ****** 13.6 13.3 13.8 14.8 15.4 15.2 16.4 16.1 14.6 14.4 13.7 ****** 1988 10.8 10.8 12.0 13.2 15.3 15.5 13.9 14.1 15.9 16.2 14.4 11.8 13.7 1989 10.8 9.2 12.3 14.9 14.2 14.6 14.3 16.0 17.5 17.2 12.7 10.8 13.7 1990 8.2 8.7 13.2 13.5 14.9 14.8 14.6 15.2 17.4 15.8 15.5 10.8 13.5 1991 8.8 9.4 8.8 12.7 13.8 14.7 14.9 16.1 15.6 14.9 13.7 8.8 12.7 1992 8.2 10.7 10.9 12.4 ****** 13.5 15.2 13.7 16.4 16.0 14.1 7.7 ****** 1993 9.3 8.6 10.1 12.5 12.8 14.3 13.9 14.5 15.7 15.0 12.5 11.8 12.6 1994 10.4 12.4 12.3 13.0 13.0 13.2 14.5 14.7 14.5 12.9 12.1 10.8 12.8 1995 11.1 10.6 11.7 11.7 12.8 13.9 14.1 15.5 16.3 15.1 14.5 8.3 13.0 1996 10.6 11.0 9.1 12.6 13.2 13.7 13.7 14.9 16.6 14.7 13.4 12.1 13.0 1997 10.6 13.4 11.4 12.0 13.3 13.1 14.7 15.8 15.5 13.9 10.3 8.2 12.7 1998 8.0 10.0 11.6 13.4 13.3 13.9 13.6 13.8 15.4 15.8 14.9 13.3 13.1 1999 9.0 11.4 9.5 12.9 14.1 14.9 12.9 15.5 15.8 15.7 10.3 12.5 12.9 2000 10.7 11.7 13.7 15.1 15.2 14.3 14.5 15.6 15.0 14.1 10.8 9.0 13.3 MEAN 12.4 13.2 13.9 15.6 16.7 18.0 17.9 18.3 18.7 17.6 15.8 13.4 16.0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 5 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 2.91 2.96 4.63 6.46 9.17 8.31 9.08 7.96 6.24 4.71 3.09 3.62 5.76 1962 3.11 3.94 4.29 6.07 8.99 9.72 11.73 7.65 6.47 6.40 2.98 3.05 6.20 1963 4.33 4.15 4.80 7.53 8.88 10.80 12.61 9.14 7.30 6.32 4.09 4.08 7.00 1964 1.08 2.71 3.96 3.93 6.28 6.78 7.99 8.24 7.50 4.50 3.22 1.69 4.82 1965 3.16 3.44 4.05 4.66 6.64 5.91 7.21 5.96 7.94 8.09 6.05 4.02 5.59 1966 4.05 5.07 4.99 6.47 7.66 8.82 8.23 8.69 8.33 8.04 6.51 3.80 6.72 1967 4.41 4.18 5.37 6.57 9.27 10.00 9.70 10.59 10.58 5.15 4.72 4.71 7.10 1968 4.02 3.81 5.12 6.12 7.64 9.70 10.38 9.95 8.02 6.02 6.69 5.66 6.93 1969 3.91 4.53 5.56 6.19 10.21 10.49 9.95 9.42 6.59 5.46 4.37 3.60 6.69 1970 3.83 3.92 4.38 5.92 7.01 6.74 8.37 8.61 5.37 4.12 3.18 3.23 5.39 1971 2.83 3.52 3.84 5.93 6.78 7.39 9.57 7.30 4.61 4.55 5.31 4.05 5.47 1972 3.63 3.03 5.97 7.07 8.27 8.42 8.21 7.11 6.39 5.58 ****** 3.52 ****** 1973 2.79 4.27 5.23 7.13 6.80 9.30 9.48 9.27 7.56 4.71 3.13 2.65 6.03 1974 3.25 3.97 ****** ****** ****** ****** 11.57 13.26 10.19 4.79 4.42 3.85 ****** 1975 3.60 4.56 5.70 7.52 10.44 15.48 14.74 ****** 8.61 5.32 3.24 3.66 ****** 1976 4.01 ****** ****** 8.18 8.12 7.98 9.02 9.52 8.98 6.58 3.51 3.12 ****** 1977 2.83 3.84 5.92 7.06 8.15 8.82 8.05 7.50 6.12 6.06 4.64 3.53 6.04 1978 3.43 4.19 4.72 6.28 9.14 10.96 9.18 9.38 6.16 5.75 4.84 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 3.00 3.73 4.88 7.19 8.41 10.18 10.86 9.13 8.01 6.85 5.87 3.97 6.84 1981 3.98 4.79 6.15 7.98 9.41 10.51 11.70 10.43 8.82 6.68 5.06 4.43 7.49 1982 ****** ****** 5.22 7.95 10.20 11.26 14.58 13.37 10.23 8.14 5.47 3.77 ****** 1983 3.86 3.84 4.41 8.23 10.18 10.39 12.59 11.72 7.39 5.06 3.88 3.41 7.08 1984 3.20 3.08 5.36 6.08 ****** 9.00 11.75 11.91 8.12 6.76 ****** ****** ****** 1985 ****** 3.79 5.29 7.18 9.04 10.39 11.71 10.01 5.74 6.30 4.83 4.66 ****** 1986 3.80 4.43 4.94 7.03 6.93 7.28 11.24 8.90 6.31 5.73 4.81 4.35 6.31 1987 ****** 3.77 5.13 6.22 6.86 7.93 7.19 6.90 5.60 4.57 3.49 2.89 ****** 1988 2.91 3.62 5.05 6.17 5.81 5.49 6.47 6.17 4.60 4.10 3.44 3.88 4.81 1989 2.86 3.45 5.11 4.31 6.74 6.77 7.88 5.73 4.18 3.24 4.27 4.15 4.89 1990 3.89 4.36 4.34 6.16 7.17 7.59 6.75 6.41 4.54 3.67 2.86 3.12 5.07 1991 3.98 3.69 5.78 6.01 5.98 6.01 5.76 4.36 4.27 3.33 3.09 3.78 4.67 1992 3.40 3.08 3.64 6.24 ****** 7.80 6.69 6.44 4.47 3.36 2.95 4.58 ****** 1993 3.16 5.14 4.52 6.31 7.58 6.86 7.23 6.18 5.08 3.17 3.95 3.24 5.20 1994 3.25 2.84 5.27 5.66 7.15 7.00 7.51 6.87 3.43 4.54 4.93 3.32 5.15 1995 3.64 4.26 4.92 6.89 6.05 7.07 7.87 6.20 4.70 3.60 2.67 3.80 5.14 1996 3.11 4.10 5.58 5.59 5.85 6.17 5.98 4.49 4.98 3.99 3.11 3.14 4.68 1997 3.22 2.52 4.10 6.17 6.29 7.56 6.67 5.40 3.86 4.60 5.17 4.67 5.02 1998 3.99 4.13 5.11 7.32 7.58 6.79 7.12 7.09 4.56 3.73 3.40 3.20 5.33 1999 3.89 4.58 5.49 5.67 5.69 5.77 7.42 6.08 5.22 4.27 4.74 3.23 5.17 2000 3.05 3.57 3.35 4.50 4.86 5.44 6.47 5.48 5.20 4.97 3.99 4.47 4.61 MEAN 3.43 3.87 4.93 6.43 7.71 8.40 9.15 8.13 6.47 5.21 4.22 3.73 5.97 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 6 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 4.63 4.39 5.11 7.92 10.19 10.56 12.38 8.44 6.35 4.74 5.98 5.20 7.16 1962 4.90 6.07 6.86 7.94 17.59 20.64 20.60 14.23 6.79 9.69 4.41 5.22 10.41 1963 6.29 5.78 6.36 8.77 7.69 8.93 12.98 9.09 7.19 6.85 4.22 4.32 7.37 1964 2.50 4.38 6.91 5.62 6.70 6.62 7.80 8.84 9.69 5.72 5.06 2.99 6.07 1965 4.88 4.80 9.05 6.78 5.82 6.22 8.26 7.15 9.83 9.55 8.28 6.00 7.22 1966 5.87 6.51 6.31 6.86 8.02 11.86 9.58 9.62 8.69 7.67 7.21 6.45 7.89 1967 7.39 6.67 7.03 8.91 9.35 9.21 10.74 13.28 12.56 4.80 5.54 6.41 8.49 1968 7.42 7.05 8.02 7.66 7.24 10.04 10.79 10.18 8.53 7.52 9.05 9.86 8.61 1969 5.26 6.26 6.59 8.12 13.81 16.13 15.76 12.99 8.51 6.64 5.30 4.55 9.16 1970 4.67 4.39 4.97 5.89 6.60 7.43 8.57 10.88 7.13 5.83 4.86 3.94 6.26 1971 3.88 4.24 4.74 6.32 6.58 8.25 10.73 9.48 6.06 8.01 7.37 6.32 6.83 1972 4.37 3.82 7.40 8.15 7.64 8.86 10.68 8.02 8.54 7.00 ****** 5.15 ****** 1973 4.01 5.16 5.73 5.90 5.74 7.11 9.84 10.87 11.81 10.15 7.16 4.70 7.35 1974 4.74 4.64 ****** ****** ****** ****** 16.61 15.80 12.59 6.08 5.17 5.47 ****** 1975 4.31 6.29 8.99 9.11 14.26 20.07 21.49 ****** 8.30 7.68 3.96 4.48 ****** 1976 4.82 ****** ****** 14.95 7.25 7.93 9.73 10.60 9.43 7.52 5.11 4.33 ****** 1977 3.91 8.15 11.09 7.81 7.08 7.03 6.86 6.28 5.47 6.57 5.60 4.42 6.69 1978 4.20 5.19 4.95 7.04 14.40 14.97 13.72 12.67 5.70 6.12 5.97 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 4.67 5.30 6.80 9.70 10.02 12.04 11.24 9.87 9.53 8.37 8.05 5.61 8.43 1981 5.24 5.80 7.50 8.70 9.97 10.73 13.00 10.97 9.53 7.72 6.63 5.92 8.48 1982 5.53 4.80 6.71 11.15 12.84 14.48 17.03 18.27 14.90 11.58 7.55 5.22 10.84 1983 5.58 6.64 5.75 8.59 10.56 10.59 13.87 13.29 7.90 6.26 4.61 4.49 8.18 1984 4.10 3.85 5.34 5.50 ****** 10.45 14.20 15.24 11.34 9.03 ****** ****** ****** 1985 ****** 5.58 6.05 9.52 11.00 10.93 13.28 11.32 6.50 6.03 5.03 6.00 ****** 1986 4.03 5.34 6.13 6.83 5.99 7.58 10.84 8.42 6.48 6.10 5.01 4.85 6.47 1987 ****** 4.76 5.13 5.31 6.26 8.15 6.98 6.92 6.41 5.22 4.42 3.56 ****** 1988 2.91 3.28 4.48 5.80 5.81 6.57 7.01 6.99 5.36 5.58 4.69 4.72 5.27 1989 3.23 3.65 4.83 4.96 6.74 7.34 8.42 6.20 5.33 3.73 4.66 4.40 5.29 1990 4.59 4.87 3.89 5.38 7.93 7.90 7.55 7.34 5.53 4.17 3.55 3.87 5.55 1991 3.83 3.52 4.83 4.75 5.44 5.86 7.04 5.44 5.75 4.51 4.03 4.02 4.92 1992 3.22 3.03 2.97 5.19 ****** 8.34 8.42 8.26 6.42 4.16 3.13 5.25 ****** 1993 3.80 5.34 4.17 5.70 6.13 6.25 6.40 6.09 5.51 3.55 4.22 3.90 5.09 1994 3.76 3.00 5.46 5.32 6.31 7.40 7.93 7.43 4.32 5.50 5.28 3.63 5.44 1995 4.06 4.58 4.84 6.62 4.85 6.27 7.02 5.71 4.46 4.44 3.16 4.21 5.02 1996 3.03 3.95 5.45 4.86 5.07 6.20 5.74 4.65 6.14 4.52 3.52 3.66 4.73 1997 3.54 2.81 4.31 5.61 5.58 6.45 5.79 4.90 4.11 4.90 5.36 5.60 4.91 1998 4.51 4.35 5.28 7.04 7.52 6.91 8.29 8.13 5.81 4.88 4.05 3.82 5.88 1999 4.16 4.60 5.22 4.45 4.96 5.24 6.71 6.35 5.21 4.94 4.93 3.55 5.03 2000 3.07 3.64 3.23 4.36 4.74 5.13 5.95 5.57 5.57 5.23 4.13 5.02 4.64 MEAN 4.46 4.91 5.91 7.09 8.16 9.29 10.51 9.37 7.58 6.38 5.31 4.90 6.98 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 7 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 3.16 3.99 5.08 6.76 8.92 8.83 8.70 6.11 5.51 5.87 4.11 4.05 5.92 1962 4.01 4.13 5.45 7.46 7.81 9.50 14.03 8.13 6.82 8.50 4.17 4.97 7.08 1963 4.57 4.19 6.31 8.28 7.92 6.84 12.21 8.27 7.06 6.38 3.79 4.22 6.67 1964 1.41 3.27 5.21 4.72 6.41 6.20 6.96 8.47 8.88 5.26 5.11 2.14 5.34 1965 4.05 4.17 6.17 5.59 6.29 5.58 7.42 7.03 9.38 8.71 7.73 5.28 6.45 1966 5.00 5.77 5.85 7.70 8.95 10.82 9.15 8.49 8.37 8.49 8.32 6.03 7.75 1967 6.50 5.88 6.99 7.85 9.49 9.76 10.98 11.54 11.13 5.54 6.23 6.12 8.17 1968 6.16 6.11 7.36 8.42 8.96 9.87 11.18 10.92 9.18 8.19 9.13 7.76 8.60 1969 4.54 5.25 7.28 6.91 11.35 13.67 12.58 11.03 8.27 6.80 5.05 4.33 8.09 1970 4.41 4.26 4.93 6.02 6.67 6.96 8.20 9.76 6.60 5.46 3.95 3.70 5.91 1971 3.37 3.51 4.54 5.73 7.05 8.36 10.04 9.21 6.13 6.38 6.59 5.33 6.35 1972 4.09 3.31 6.87 7.38 7.33 6.36 9.60 7.12 8.20 7.23 ****** 4.37 ****** 1973 3.14 4.66 6.06 6.44 7.59 7.46 9.01 12.06 7.92 4.63 3.93 3.58 6.37 1974 4.30 4.24 ****** ****** ****** ****** 14.32 13.08 11.20 5.43 5.47 4.88 ****** 1975 4.81 4.85 7.77 8.06 13.29 15.93 15.55 ****** 8.84 8.60 4.16 4.38 ****** 1976 4.54 ****** ****** 11.99 5.93 6.12 7.87 8.94 7.31 7.00 3.86 3.56 ****** 1977 2.65 5.63 9.22 6.80 6.64 6.05 4.85 5.88 5.01 5.56 5.88 4.15 5.70 1978 3.73 4.11 4.80 6.00 10.76 8.98 13.28 10.49 4.98 6.72 5.58 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 3.70 4.53 6.13 8.62 8.38 10.53 9.67 8.67 8.95 7.56 7.47 5.57 7.48 1981 4.86 5.28 5.66 7.14 7.08 9.50 11.21 9.80 8.85 6.97 5.82 5.37 7.29 1982 4.55 4.61 5.87 9.15 10.37 12.44 15.03 15.43 12.90 10.65 6.73 4.26 9.33 1983 4.67 5.64 5.25 8.36 10.08 9.11 12.07 10.89 7.40 6.24 4.47 4.34 7.38 1984 4.28 3.78 5.19 5.62 ****** 8.77 12.60 13.18 9.45 8.41 ****** ****** ****** 1985 ****** 5.13 5.83 8.65 9.61 10.37 11.38 11.09 7.68 6.34 5.04 5.21 ****** 1986 4.01 4.74 5.33 5.83 5.91 7.67 11.50 9.90 7.05 5.18 ****** 4.54 ****** 1987 ****** 5.00 5.55 4.98 6.73 8.28 6.64 6.99 5.96 4.66 3.76 3.32 ****** 1988 2.75 3.58 4.19 5.31 5.41 6.33 6.87 7.07 5.13 5.05 4.10 4.18 5.00 1989 3.19 3.54 4.52 4.36 7.26 8.03 8.11 6.07 5.14 4.20 4.92 5.08 5.37 1990 4.62 4.95 4.08 5.55 7.93 8.46 7.67 6.81 5.77 4.06 3.63 3.64 5.60 1991 3.97 3.75 5.00 4.64 5.20 5.67 7.05 5.09 5.17 3.86 3.61 4.11 4.76 1992 3.56 2.82 3.11 4.90 ****** 7.79 7.96 7.97 5.71 4.15 3.47 5.42 ****** 1993 3.95 5.52 4.66 5.85 5.88 6.24 6.53 6.22 6.06 3.96 4.38 4.21 5.29 1994 4.19 3.17 5.44 5.34 6.34 7.24 7.91 7.24 4.26 5.13 5.37 3.45 5.42 1995 4.05 4.39 4.62 6.81 5.07 6.21 6.88 6.05 4.63 4.01 3.29 4.36 5.03 1996 2.99 4.28 5.44 4.99 5.39 6.01 5.86 4.91 5.99 4.50 3.69 3.90 4.83 1997 3.63 2.66 4.19 5.58 5.53 6.29 5.62 4.70 4.02 5.01 5.64 5.65 4.88 1998 4.78 4.55 5.48 7.28 6.76 6.75 7.87 7.84 5.69 4.67 4.53 4.14 5.86 1999 4.55 5.01 5.33 4.69 4.43 4.88 6.33 6.65 5.49 5.52 5.22 3.84 5.16 2000 3.38 3.80 3.50 4.45 4.50 5.05 5.90 5.94 6.02 5.71 4.23 5.30 4.82 MEAN 4.06 4.43 5.53 6.59 7.48 8.13 9.40 8.56 7.14 6.07 5.07 4.57 6.41 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 8 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. ABSOLUTE OF MINIMUM TEMPERATURE WITH DAY YEAR JAN. DAY FEB. DAY MAR. DAY APR. DAY MAY DAY JUNE DAY JULY DAY AUG. DAY SEP. DAY OCT. DAY NOV. DAY DEC. DAY ANNUAL 1961 -10.0 11 -11.0 2 -10.0 5 1.0 5 10.5 3 12.5 9 15.0 3 12.0 30 10.0 29 -2.0 31 -3.5 9 -2.0 17 -11.0 1962 -8.0 18 -3.5 26 -2.0 1 7.0 19 9.0 1 14.5 3 15.0 28 11.5 17 7.5 6 2.0 30 -8.0 24 -9.0 23 -9.0 1963 -2.5 29 -3.5 26 -6.5 31 2.0 3 12.0 13 7.0 16 16.0 1 12.0 23 9.0 11 7.0 26 3.0 20 -6.0 29 -6.5 1964 -20.0 4 -8.0 14 0.0 1 1.0 16 4.0 3 6.0 9 9.0 5 8.0 31 8.0 19 -3.0 29 -4.0 3 -19.0 30 -20.0 1965 -6.0 13 -9.0 4 -4.0 16 -1.0 7 7.0 12 12.0 2 14.5 27 14.5 14 12.0 30 8.0 27 3.0 13 -2.0 29 -9.0 1966 -2.0 3 -2.0 8 -2.0 3 2.0 6 7.5 10 11.5 4 12.0 4 14.5 7 13.0 4 6.0 17 -8.0 24 -11.0 30 -11.0 1967 -12.5 23 -14.0 4 -3.0 31 -3.0 2 9.0 1 14.0 6 16.5 4 14.5 18 12.0 28 6.0 23 1.0 30 -10.0 24 -14.0 1968 -5.5 4 -8.0 6 2.0 1 4.5 3 8.5 6 11.0 1 12.0 14 14.0 30 8.5 20 3.5 11 4.0 12 -3.0 24 -8.0 1969 -8.0 7 -4.5 13 -0.5 2 2.5 15 7.0 2 12.0 9 15.8 16 15.5 5 4.0 15 5.0 15 -5.5 24 -5.0 29 -8.0 1970 -6.5 30 -5.5 1 -3.0 15 6.0 14 11.5 10 12.5 12 16.5 19 ***** ** ***** ** 0.0 24 -0.5 16 -5.5 17 ***** 1971 -9.5 27 -9.0 3 -5.0 2 5.5 21 10.5 3 12.5 10 16.0 3 15.0 9 8.0 12 ***** ** ***** ** ***** ** ***** 1972 -18.0 31 -20.0 1 -2.0 21 1.0 2 9.0 8 18.0 1 16.0 25 10.2 27 6.5 20 6.0 21 ***** ** -12.0 27 ***** 1973 -12.0 26 -6.0 7 -4.5 11 3.5 1 11.0 11 16.0 27 17.0 30 10.0 11 5.5 30 1.5 1 -5.0 10 -8.5 16 -12.0 1974 -10.0 6 -10.0 3 ***** ** ***** ** ***** ** ***** ** 17.0 12 12.0 20 7.5 30 1.5 13 -2.0 26 -10.5 6 ***** 1975 -11.5 15 -7.0 14 -7.0 6 0.0 5 9.5 5 7.5 21 10.0 2 ***** ** 9.0 21 -2.5 27 -6.0 17 -7.5 27 ***** 1976 -6.0 6 ***** ** ***** ** 0.0 4 7.0 3 11.0 12 15.0 1 20.5 16 11.0 15 2.0 22 -7.0 15 -7.0 7 ***** 1977 -13.0 26 -4.0 3 0.0 16 3.0 17 8.0 18 8.0 13 8.0 17 7.0 31 2.0 8 -6.0 26 -9.0 29 -12.0 29 -13.0 1978 -16.0 16 -14.5 8 -6.5 1 -1.5 3 4.5 4 8.5 10 8.0 10 9.0 25 5.5 19 4.5 7 -3.5 6 ***** ** ***** 1979 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1980 -8.0 12 -14.0 3 -4.0 6 1.0 18 8.0 3 11.0 5 14.0 3 9.0 16 5.0 17 2.0 25 2.0 7 -4.0 15 -14.0 1981 -6.0 31 -6.0 4 -1.0 5 -2.0 3 8.0 4 12.0 10 15.0 3 13.0 27 9.0 27 3.0 29 -2.0 27 -2.0 13 -6.0 1982 -8.0 26 -8.0 20 -6.0 9 4.0 1 9.0 11 14.0 1 16.0 1 12.0 30 8.0 22 -1.0 26 -6.0 18 -17.0 10 -17.0 1983 -10.0 30 ***** ** -4.0 20 2.5 16 8.5 2 11.5 4 14.0 4 12.5 27 6.5 17 -4.0 21 -7.0 27 -10.0 24 ***** 1984 -10.0 22 -12.5 20 -2.0 6 3.0 5 ***** ** 10.5 7 15.5 7 14.5 31 6.0 30 0.0 25 ***** ** ***** ** ***** 1985 ***** ** -4.0 8 -5.0 4 5.0 9 9.5 1 13.0 12 18.0 14 13.5 22 9.5 13 3.5 24 -1.0 22 -6.0 27 ***** 1986 -8.5 29 -2.5 2 -2.0 18 3.9 1 10.5 1 13.5 5 16.5 8 12.5 10 10.0 11 3.5 18 -2.5 17 -11.0 12 -11.0 1987 ***** ** -4.8 8 -1.8 23 2.4 1 9.4 8 12.4 22 16.0 13 15.4 31 10.4 25 -1.6 16 -6.2 30 -7.6 3 ***** 1988 -6.6 21 -6.8 7 0.0 7 3.4 4 11.2 4 17.2 1 16.4 24 15.4 27 7.8 27 5.6 4 -2.6 16 -7.6 31 -7.6 1989 -8.2 31 -6.6 5 -1.0 1 1.2 1 2.4 2 16.2 16 17.6 26 15.4 29 7.8 24 3.6 25 -0.2 23 -2.4 10 -8.2 1990 -14.0 27 -3.4 9 -1.6 22 4.4 8 13.2 16 16.4 3 17.6 13 16.4 6 9.8 30 1.6 20 -1.6 18 -7.0 30 -14.0 1991 -5.6 2 -11.2 14 -2.0 12 4.4 15 9.0 8 13.4 25 19.0 2 12.4 23 6.2 29 3.8 15 -2.8 29 -3.6 20 -11.2 1992 -13.0 30 -5.8 17 -4.4 12 4.0 4 ***** ** 17.0 11 16.6 17 13.4 16 8.8 14 0.6 19 -3.2 29 -4.0 29 ***** 1993 -14.2 16 -3.0 17 -1.8 15 6.0 2 7.2 10 16.0 24 17.0 31 15.0 2 11.6 29 1.4 9 -3.0 23 -4.8 7 -14.2 1994 -5.2 12 -6.4 5 0.6 3 -0.4 6 10.0 7 17.6 1 18.6 13 17.4 19 8.4 17 2.8 26 3.4 29 -7.6 9 -7.6 1995 -4.0 10 -4.8 19 -3.0 7 6.0 8 10.0 27 16.2 1 17.4 26 16.8 26 9.2 23 -1.2 20 -4.6 29 -4.6 11 -4.8 1996 -11.0 14 -3.2 15 0.2 21 0.6 7 9.6 3 13.4 17 18.6 15 10.2 31 10.6 1 4.0 21 -3.6 14 -7.6 7 -11.0 1997 -3.6 30 -7.4 8 -2.2 9 3.4 14 8.6 7 17.4 30 19.2 1 13.4 27 12.0 10 7.0 21 -2.4 26 -3.6 29 -7.4 1998 -4.6 15 -4.6 18 -1.6 1 4.4 8 7.0 4 16.2 13 19.4 26 17.6 27 12.2 17 4.6 10 1.8 25 -0.6 26 -4.6 1999 -11.2 3 -1.8 2 0.4 7 5.6 13 11.6 12 18.0 20 17.2 14 16.6 13 9.0 30 5.4 27 -0.4 30 -3.4 1 -11.2 2000 -8.2 13 -5.2 9 -2.0 4 6.2 3 15.0 14 12.0 14 16.4 19 15.8 22 13.0 27 8.2 9 -3.4 18 -1.8 31 -8.2 LOW. -20.0 4 -20.0 1 -10.0 5 -3.0 2 2.4 2 6.0 9 8.0 17 7.0 31 2.0 8 -6.0 26 -9.0 29 -19.0 30 -20.0 YEAR 1964 1972 1961 1967 1989 1964 1977 1977 1977 1977 1977 1964 1964 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 9 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. ABSOLUTE OF MAXIMUM TEMPERATURE WITH DAY YEAR JAN. DAY FEB. DAY MAR. DAY APR. DAY MAY DAY JUNE DAY JULY DAY AUG. DAY SEP. DAY OCT. DAY NOV. DAY DEC. DAY ANNUAL 1961 15.0 21 17.5 25 26.0 26 32.5 29 38.0 28 40.0 6 42.5 12 37.0 1 35.5 23 30.5 4 17.0 5 21.0 4 42.5 1962 18.0 28 20.0 8 29.0 25 28.5 1 38.5 31 36.5 12 39.0 5 38.0 21 32.5 16 33.5 9 17.0 1 14.0 7 39.0 1963 20.0 11 20.0 8 25.0 13 31.0 28 35.0 29 40.0 11 40.0 7 39.0 18 38.5 28 38.0 12 39.0 8 24.5 1 40.0 1964 17.5 28 24.0 25 27.5 31 32.5 30 36.0 11 39.5 16 43.0 13 40.0 3 39.0 1 35.0 1 28.0 13 17.5 6 43.0 1965 17.5 11 22.5 9 27.0 8 31.5 29 38.5 29 39.5 1 43.0 14 38.5 17 37.0 14 34.5 10 31.0 8 23.0 1 43.0 1966 21.0 31 21.0 10 23.5 9 31.0 20 34.0 30 41.0 15 42.0 6 41.5 29 38.5 1 38.0 1 33.0 1 17.5 14 42.0 1967 18.8 15 16.5 2 21.5 7 22.0 22 39.5 29 41.0 24 41.0 9 39.5 15 38.0 2 33.5 11 31.0 3 25.0 7 41.0 1968 19.0 11 15.5 29 20.0 2 33.5 21 37.5 28 40.0 19 43.5 1 40.5 15 40.0 10 35.0 1 28.0 6 19.0 4 43.5 1969 12.5 2 16.5 19 30.5 20 34.0 30 40.0 27 40.5 25 41.0 25 38.5 21 38.0 11 34.0 7 25.0 2 18.5 23 41.0 1970 15.5 1 21.0 19 28.5 31 34.5 8 40.0 17 40.5 21 41.0 1 41.5 6 36.5 8 35.0 8 27.5 9 19.5 8 41.5 1971 20.5 7 23.0 23 31.5 15 34.0 25 40.0 24 39.5 23 40.5 10 38.0 6 36.5 2 31.0 6 24.5 18 21.5 1 40.5 1972 10.0 16 13.0 19 24.0 25 35.0 24 35.0 30 42.0 25 40.0 2 36.0 19 37.0 12 29.0 7 ***** ** 18.4 1 ***** 1973 12.5 30 23.5 20 29.0 22 35.5 28 38.5 31 41.0 12 44.0 12 41.0 1 36.0 2 34.0 11 32.0 2 24.0 4 44.0 1974 12.5 23 11.5 17 ***** ** ***** ** ***** ** ***** ** 41.0 10 42.0 23 38.5 21 28.0 21 26.0 6 15.0 1 ***** 1975 14.2 12 22.0 25 27.0 18 33.0 22 37.0 28 41.0 15 47.0 12 ***** ** 35.0 16 30.0 1 27.0 1 24.0 3 ***** 1976 17.0 22 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 39.0 27 30.0 2 23.0 6 17.0 17 ***** 1977 8.0 4 22.0 19 35.0 24 32.0 21 36.0 16 44.0 20 42.0 10 41.0 17 37.0 5 34.0 18 29.0 5 24.5 7 44.0 1978 17.0 21 21.0 23 24.5 31 37.0 24 39.0 20 41.5 21 44.5 1 39.5 17 37.0 2 37.5 2 28.0 1 ***** ** ***** 1979 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1980 16.0 13 15.0 16 26.0 31 34.0 15 38.0 24 46.0 10 40.0 9 40.0 4 38.0 6 36.0 4 26.0 15 19.0 1 46.0 1981 16.0 20 19.0 10 28.0 26 37.0 23 38.0 28 40.0 30 40.0 6 38.0 6 38.0 17 30.0 15 27.0 6 19.0 18 40.0 1982 17.0 11 16.0 5 25.0 25 35.0 28 38.0 20 42.0 12 45.0 31 42.0 1 35.0 3 32.0 1 24.5 9 15.0 5 45.0 1983 15.0 23 21.5 21 26.0 6 33.5 23 36.0 18 43.0 23 45.5 29 42.0 29 37.5 5 36.0 4 27.5 1 20.0 2 45.5 1984 14.5 5 23.0 14 24.0 8 34.5 24 ***** ** 38.5 11 39.0 7 41.0 9 37.0 3 31.5 18 ***** ** ***** ** ***** 1985 ***** ** 25.5 26 28.0 24 35.5 24 36.0 31 42.0 8 43.5 28 36.5 6 36.0 3 35.5 1 23.5 12 23.5 2 ***** 1986 17.0 12 18.0 27 22.0 2 29.5 18 36.5 26 ***** ** ***** ** ***** ** 35.5 27 35.5 5 25.5 9 14.5 3 ***** 1987 ***** ** 22.6 27 25.0 14 35.0 27 36.8 25 39.4 5 41.0 9 37.0 4 39.4 6 32.2 5 29.2 7 25.6 24 ***** 1988 17.0 29 20.6 2 28.8 21 32.0 14 39.0 28 44.2 17 42.6 1 38.2 5 38.8 6 28.4 11 27.0 10 18.8 27 44.2 1989 11.4 4 13.8 22 24.6 27 30.8 29 37.0 28 40.8 24 42.5 9 37.6 11 39.4 14 32.6 8 21.0 16 21.0 5 42.5 1990 13.5 24 19.0 20 29.6 14 34.0 29 37.5 19 40.6 16 39.6 30 39.6 9 37.6 2 31.0 5 26.2 12 18.0 7 40.6 1991 14.0 31 16.4 1 20.6 30 31.6 25 39.6 31 39.8 3 42.8 8 39.8 6 38.0 9 27.2 27 25.6 4 21.2 10 42.8 1992 17.4 3 24.4 25 23.6 30 29.0 14 ***** ** 39.4 19 39.4 6 36.8 25 36.6 25 29.4 12 24.6 13 16.6 28 ***** 1993 16.2 30 19.6 12 21.2 31 31.8 20 35.4 23 41.2 19 38.6 4 36.6 28 36.8 15 33.2 2 29.6 1 15.8 27 41.2 1994 16.8 5 18.4 1 26.2 31 36.2 26 35.2 16 41.0 17 39.2 7 40.4 2 32.4 1 29.2 1 27.6 5 22.4 20 41.0 1995 17.0 30 20.4 5 26.0 26 30.0 4 34.6 6 41.4 30 41.8 16 39.6 23 37.4 20 33.7 12 26.8 11 14.6 3 41.8 1996 16.6 7 22.8 11 24.0 26 30.4 13 37.6 31 40.8 5 38.2 8 39.0 27 40.6 9 33.0 14 22.4 7 17.4 29 40.8 1997 15.6 1 23.2 23 24.8 24 28.6 10 36.0 28 40.0 16 41.0 19 40.6 15 39.4 3 34.0 3 23.4 5 16.8 10 41.0 1998 14.4 26 24.2 8 29.0 30 34.2 18 36.4 15 38.0 29 43.4 6 40.0 18 38.4 6 34.2 2 25.4 4 24.0 12 43.4 1999 15.2 1 21.6 20 24.6 27 29.6 30 37.0 14 41.8 26 40.8 8 38.6 30 38.0 14 32.0 12 24.4 1 18.0 31 41.8 2000 19.6 7 20.0 25 29.0 24 35.0 11 40.2 27 39.4 24 37.6 11 37.4 1 36.6 1 29.8 1 24.2 4 14.6 1 40.2 HIG. 21.0 31 25.5 26 35.0 24 37.0 24 40.2 27 46.0 10 47.0 12 42.0 23 40.6 9 38.0 12 39.0 8 25.6 24 47.0 YEAR 1966 1985 1977 1978 2000 1980 1975 1974 1996 1963 1963 1987 1975 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 10 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. 24 HOUR MAXIMUM PRECIPITATION. YEAR JAN. DAY FEB. DAY MAR. DAY APR. DAY MAY DAY JUNE DAY JULY DAY AUG. DAY SEP. DAY OCT. DAY NOV. DAY DEC. DAY ANNUAL 1961 5.5 22 5.0 3 9.0 22 20.5 7 1.0 1 2.0 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 11.0 23 1.0 16 20.5 1962 5.0 9 0.0 ** 28.0 16 24.0 7 8.0 11 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 28.0 1963 0.0 ** 6.0 13 14.0 3 24.0 7 40.0 11 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 40.0 1964 0.0 ** 30.0 15 27.0 22 4.0 1 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 18 30.0 1965 5.0 14 0.0 ** 0.0 ** 1.0 14 10.5 19 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.5 13 5.0 23 3.0 29 10.5 1966 1.5 12 9.5 19 4.5 30 30.0 4 5.0 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 4.5 27 0.0 ** 2.0 20 30.0 1967 4.0 23 26.5 13 12.5 31 14.5 15 4.5 1 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 20 0.0 ** 26.5 1968 4.0 26 13.5 23 3.5 9 11.5 29 6.0 18 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.0 27 4.5 8 11.0 9 13.5 1969 24.5 11 9.0 22 3.5 16 19.5 9 3.0 17 0.0 ** 0.0 ** 0.0 ** 0.0 ** 4.0 31 25.2 4 1.1 3 25.2 1970 18.1 2 8.0 17 14.8 7 17.6 24 1.8 5 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 6.5 23 18.1 1971 5.1 14 1.0 14 13.4 30 11.2 26 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 7.0 11 12.0 20 13.4 1972 12.0 30 5.7 22 7.5 4 11.5 25 12.0 21 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** ***** ** 7.5 2 ***** 1973 3.0 24 12.5 23 6.0 18 7.0 3 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 5.0 14 12.5 1974 20.0 18 9.5 26 ***** ** ***** ** ***** ** ***** ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 12.5 16 ***** 1975 3.5 28 5.3 4 4.5 30 18.0 25 2.6 15 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.0 15 6.0 30 4.2 3 18.0 1976 10.1 24 ***** ** ***** ** 11.0 8 5.5 16 0.0 ** 0.0 ** 0.0 ** 0.0 ** 9.0 31 1.0 1 11.0 12 ***** 1977 13.0 8 1.0 8 11.0 31 16.0 2 3.0 26 0.0 ** 0.0 ** 0.0 ** 0.0 ** 5.0 27 4.5 2 30.5 24 30.5 1978 13.5 27 31.0 26 6.5 4 8.5 15 3.5 4 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 15.0 11 ***** ** ***** 1979 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1980 8.0 24 6.5 7 14.5 3 8.0 5 2.0 18 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.5 25 11.5 13 14.5 1981 8.0 4 36.0 12 5.5 16 7.5 26 14.5 2 0.0 ** 6.0 22 0.0 ** 0.0 ** 2.5 20 2.0 26 7.0 27 36.0 1982 12.0 29 19.5 9 12.5 26 7.5 22 3.5 16 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.5 2 13.5 1 24.5 8 24.5 1983 10.0 21 10.5 18 12.0 31 43.5 6 4.5 3 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 5.0 7 43.5 1984 19.0 30 4.5 5 13.5 23 5.0 1 ***** ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** ***** ** ***** ** ***** 1985 ***** ** 0.5 18 13.0 4 0.5 25 1.0 18 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.0 28 16.0 20 ***** 1986 1.5 24 16.0 11 14.0 12 16.5 12 2.5 14 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.0 24 6.1 23 14.6 3 16.5 1987 ***** ** 6.0 21 18.0 29 17.0 6 6.0 29 0.0 ** 0.0 ** 0.0 ** 0.0 ** 13.0 27 0.3 4 10.0 29 ***** 1988 2.4 19 7.0 26 22.0 24 19.0 27 0.0 ** 0.0 ** 8.0 11 0.0 ** 0.0 ** 2.0 16 0.0 ** 6.0 20 22.0 1989 4.4 30 9.0 23 16.0 19 8.0 30 7.0 8 0.6 8 0.0 ** 0.0 ** 0.0 ** 0.0 ** 8.0 17 7.0 16 16.0 1990 21.0 26 11.0 11 10.0 26 9.2 7 1.0 12 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 18.0 22 21.0 1991 4.0 23 24.0 22 22.0 27 11.0 1 2.2 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.6 5 2.6 15 14.0 14 24.0 1992 10.0 25 5.0 28 5.0 18 17.0 3 ***** ** 0.7 11 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 16 7.2 4 ***** 1993 10.0 4 22.9 5 8.0 9 17.5 27 4.7 8 4.0 4 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 29 1.0 3 22.9 1994 6.0 25 1.0 25 13.0 13 12.0 19 10.1 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.9 16 9.0 18 3.0 4 13.0 1995 15.0 1 21.0 6 17.0 22 46.8 25 3.0 1 0.0 ** 0.0 ** 0.0 ** 3.0 22 0.0 ** 0.0 ** 4.0 26 46.8 1996 2.0 18 18.0 22 10.1 8 9.0 16 6.0 22 2.0 11 0.0 ** 0.0 ** 0.0 ** 1.2 18 2.0 13 8.0 16 18.0 1997 12.4 17 0.0 ** 7.6 26 5.0 21 10.0 6 0.0 ** 0.0 ** 0.0 ** 0.0 ** 10.0 31 13.0 13 10.2 18 13.0 1998 10.0 3 13.0 11 10.0 2 38.0 7 11.0 2 0.0 ** 0.0 ** 0.4 8 0.0 ** 0.1 13 0.0 ** 0.4 5 38.0 1999 24.0 19 10.0 6 21.0 15 10.0 11 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.1 28 0.0 ** 8.0 12 3.0 18 24.0 2000 9.0 30 5.0 28 3.0 3 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 10.0 2 5.2 10 20.0 16 20.0 HIG. 24.5 11 36.0 12 28.0 16 46.8 25 40.0 11 4.0 4 8.0 11 0.4 8 3.0 22 13.0 27 25.2 4 30.5 24 46.8 YEAR 1969 1981 1962 1995 1963 1993 1988 1998 1995 1987 1969 1977 1995 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 11 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MONTHLY TOTAL PRECIPITATION WITH SEASONAL PERCENT. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL SEASONAL-PERCENT ----------------------- 1961 10.0 5.0 31.0 55.5 1.0 2.0 0.0 0.0 0.0 0.0 11.0 1.0 116.5 39.5 50.2 0.0 10.3 1962 13.5 0.0 35.0 58.0 8.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 114.5 42.4 57.6 0.0 0.0 1963 0.0 11.0 31.5 53.0 64.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 160.0 26.6 73.4 0.0 0.0 1964 0.0 43.0 51.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 101.0 93.1 4.0 0.0 3.0 1965 20.5 0.0 0.0 1.0 10.5 0.0 0.0 0.0 0.0 0.5 8.0 4.0 44.5 46.1 25.8 0.0 28.1 1966 3.0 24.5 17.5 56.0 10.0 0.0 0.0 0.0 0.0 7.5 0.0 5.0 123.5 36.4 53.4 0.0 10.1 1967 9.0 75.5 22.0 62.5 8.0 0.0 0.0 0.0 0.0 0.0 6.5 0.0 183.5 58.0 38.4 0.0 3.5 1968 11.0 37.5 13.0 20.0 7.5 0.0 0.0 0.0 0.0 1.5 9.2 22.5 122.2 50.3 22.5 0.0 27.2 1969 32.5 18.0 5.0 49.5 6.5 0.0 0.0 0.0 0.0 4.6 28.3 1.1 145.5 38.1 38.5 0.0 23.4 1970 34.5 8.0 23.4 18.9 1.8 0.0 0.0 0.0 0.0 0.0 0.0 9.5 96.1 68.6 21.5 0.0 9.9 1971 5.1 2.4 17.9 21.1 0.0 0.0 0.0 0.0 0.0 0.0 16.4 23.1 86.0 29.5 24.5 0.0 45.9 1972 58.9 9.2 29.5 14.2 15.7 0.0 0.0 0.0 0.0 0.0 ****** 18.0 ****** 67.1 20.5 0.0 12.4 1973 5.0 21.0 25.6 13.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.5 71.4 72.3 18.6 0.0 9.1 1974 63.1 26.5 ****** ****** ****** ****** 0.0 0.0 0.0 0.0 0.0 27.7 ****** 76.4 ***** 0.0 23.6 1975 12.9 9.5 8.0 57.5 2.6 0.0 0.0 0.0 0.0 1.2 6.5 16.3 114.5 26.6 52.5 0.0 21.0 1976 13.4 ****** ****** 35.9 5.5 0.0 0.0 0.0 0.0 9.0 1.0 21.5 ****** 15.5 48.0 0.0 36.5 1977 67.7 1.0 11.0 37.5 4.5 0.0 0.0 0.0 0.0 9.5 6.7 31.5 169.4 47.0 24.8 0.0 28.2 1978 30.5 73.5 17.3 18.7 7.0 0.0 0.0 0.0 0.0 0.0 17.0 ****** ****** 74.0 15.7 0.0 10.4 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1980 24.5 33.0 33.5 9.5 2.0 0.0 0.0 0.0 0.0 0.0 4.5 14.0 121.0 75.2 9.5 0.0 15.3 1981 24.0 83.5 8.5 25.0 24.0 0.0 6.0 0.0 0.0 2.5 2.0 10.0 185.5 62.5 26.4 3.2 7.8 1982 33.5 73.0 71.0 11.0 7.0 0.0 0.0 0.0 0.0 7.0 41.5 54.0 298.0 59.6 6.0 0.0 34.4 1983 26.5 23.0 22.0 131.0 8.0 0.0 0.0 0.0 0.0 0.0 0.0 12.5 223.0 32.1 62.3 0.0 5.6 1984 44.0 9.5 49.5 11.0 ****** 0.0 0.0 0.0 0.0 0.0 ****** ****** ****** 90.4 9.6 0.0 0.0 1985 ****** 0.5 24.5 1.0 1.0 0.0 0.0 0.0 0.0 0.0 2.0 46.5 ****** 33.1 2.6 0.0 64.2 1986 1.5 38.0 74.0 39.2 2.5 0.0 0.0 0.0 0.0 2.0 11.4 42.8 211.4 53.7 19.7 0.0 26.6 1987 ****** 7.4 40.9 32.0 6.3 0.0 0.0 0.0 0.0 16.0 0.3 10.0 ****** 42.8 33.9 0.0 23.3 1988 3.9 30.0 67.0 37.1 0.0 0.0 8.0 0.0 0.0 2.0 0.0 7.9 155.9 64.7 23.8 5.1 6.4 1989 11.3 24.7 20.0 8.0 16.0 0.6 0.0 0.0 0.0 0.0 14.5 10.9 106.0 52.8 23.2 0.0 24.0 1990 63.8 38.2 14.1 16.5 1.3 0.0 0.0 0.0 0.0 0.0 0.0 31.0 164.9 70.4 10.8 0.0 18.8 1991 22.3 48.0 88.4 21.5 4.1 0.0 0.0 0.0 0.0 0.6 3.7 39.7 228.3 69.5 11.2 0.0 19.3 1992 30.7 14.4 23.3 31.7 ****** 0.8 0.0 0.0 0.0 0.0 3.1 27.9 ****** 51.9 24.6 0.0 23.5 1993 39.9 82.0 25.7 38.9 8.8 4.0 0.0 0.0 0.0 0.0 7.5 1.0 207.8 71.0 24.9 0.0 4.1 1994 8.1 1.1 38.6 14.0 14.3 0.0 0.0 0.0 0.0 0.9 10.7 3.1 90.8 52.6 31.2 0.0 16.2 1995 15.2 33.8 34.9 78.7 3.0 0.0 0.0 0.0 3.0 0.0 0.0 17.8 186.4 45.0 43.8 1.6 9.5 1996 4.7 38.0 53.8 11.1 10.4 2.0 0.0 0.0 0.0 2.7 2.2 9.0 133.9 72.1 17.6 0.0 10.4 1997 19.6 0.0 24.8 13.0 10.0 0.0 0.0 0.0 0.0 15.5 33.2 32.1 148.2 30.0 15.5 0.0 54.5 1998 28.7 56.6 24.0 62.0 17.9 0.0 0.0 0.4 0.0 0.1 0.0 0.4 190.1 57.5 42.0 0.2 0.3 1999 61.1 22.6 97.3 18.1 0.0 0.0 0.0 0.0 0.1 0.0 13.9 3.0 216.1 83.8 8.4 0.0 7.8 2000 16.3 12.3 3.4 0.0 0.0 0.0 0.0 0.0 0.0 12.1 10.2 45.0 99.3 32.2 0.0 0.0 67.8 MEAN 23.5 27.2 31.8 31.2 8.0 0.2 0.4 0.0 0.1 2.4 7.3 16.5 148.6 55.6 26.6 0.2 17.6 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 12 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 5 2 7 8 1 1 0 0 0 0 1 1 26 1962 3 0 3 4 1 0 0 0 0 0 0 0 11 1963 0 2 3 7 8 0 0 0 0 0 0 0 20 1964 0 5 3 1 0 0 0 0 0 0 0 1 10 1965 8 0 0 1 1 0 0 0 0 1 2 2 15 1966 2 8 7 9 2 0 0 0 0 5 0 3 36 1967 4 7 2 13 4 0 0 0 0 0 3 0 33 1968 5 9 6 4 2 0 0 0 0 2 7 10 45 1969 4 5 3 5 5 0 0 0 0 4 4 2 32 1970 6 2 5 3 1 0 0 0 0 0 0 3 20 1971 2 3 4 6 0 0 0 0 0 0 5 6 26 1972 14 4 8 2 2 0 0 0 0 0 *** 5 *** 1973 2 4 8 3 0 0 0 0 0 0 0 2 19 1974 8 8 *** *** *** *** 0 0 0 0 0 6 *** 1975 5 3 3 8 1 0 0 0 0 2 2 6 30 1976 3 *** *** 6 1 0 0 0 0 1 1 3 *** 1977 11 1 1 6 2 0 0 0 0 5 3 2 31 1978 7 7 4 5 2 0 0 0 0 0 2 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 5 11 6 2 1 0 0 0 0 0 2 2 29 1981 5 7 2 6 3 0 1 0 0 1 1 3 29 1982 7 10 9 2 2 0 0 0 0 4 7 8 49 1983 6 4 3 7 2 0 0 0 0 0 0 4 26 1984 6 3 9 4 *** 0 0 0 0 0 *** *** *** 1985 *** 1 6 2 1 0 0 0 0 0 3 7 *** 1986 1 8 15 8 1 0 0 0 1 1 8 8 51 1987 *** 3 9 4 3 0 0 0 0 3 1 1 *** 1988 4 10 7 7 0 0 1 0 0 1 0 5 35 1989 6 8 7 1 3 1 0 0 0 0 3 5 34 1990 15 13 4 4 3 0 0 0 0 0 0 3 42 1991 10 8 15 9 5 0 0 0 0 1 3 11 62 1992 13 8 9 11 *** 2 0 0 0 0 2 10 *** 1993 8 13 9 9 5 1 0 0 0 0 6 1 52 1994 4 2 9 2 5 0 0 0 0 1 4 2 29 1995 2 8 7 8 1 0 0 0 1 0 0 11 38 1996 4 10 15 3 3 1 0 0 0 4 2 2 44 1997 2 0 11 9 1 0 0 0 0 5 6 8 42 1998 10 9 5 6 5 0 0 1 0 1 0 1 38 1999 11 8 12 4 0 0 0 0 1 0 6 1 43 2000 6 5 2 0 0 0 0 0 0 4 5 7 29 MEAN 6 6 6 5 2 0 0 0 0 1 2 4 32 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 13 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS PRECIPITATION EQUAL OR MORE THAN 1 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 3 1 6 6 1 1 0 0 0 0 1 1 20 1962 3 0 3 4 1 0 0 0 0 0 0 0 11 1963 0 2 3 7 8 0 0 0 0 0 0 0 20 1964 0 5 3 1 0 0 0 0 0 0 0 1 10 1965 8 0 0 1 1 0 0 0 0 0 2 2 14 1966 2 6 6 8 2 0 0 0 0 2 0 3 29 1967 3 7 2 12 2 0 0 0 0 0 3 0 29 1968 4 7 5 4 2 0 0 0 0 1 2 6 31 1969 4 5 2 5 3 0 0 0 0 1 2 1 23 1970 3 1 4 2 1 0 0 0 0 0 0 2 13 1971 1 1 2 5 0 0 0 0 0 0 4 4 17 1972 12 3 8 2 2 0 0 0 0 0 *** 4 *** 1973 2 3 7 3 0 0 0 0 0 0 0 2 17 1974 7 7 *** *** *** *** 0 0 0 0 0 6 *** 1975 5 3 2 7 1 0 0 0 0 1 1 6 26 1976 3 *** *** 6 1 0 0 0 0 1 1 3 *** 1977 10 1 1 6 2 0 0 0 0 3 2 2 27 1978 7 6 3 5 2 0 0 0 0 0 2 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 5 11 6 2 1 0 0 0 0 0 2 2 29 1981 5 7 2 6 3 0 1 0 0 1 1 3 29 1982 7 10 9 2 2 0 0 0 0 4 7 8 49 1983 6 4 3 7 2 0 0 0 0 0 0 4 26 1984 6 3 9 4 *** 0 0 0 0 0 *** *** *** 1985 *** 0 5 0 1 0 0 0 0 0 1 7 *** 1986 1 7 12 8 1 0 0 0 0 1 3 7 40 1987 *** 2 7 4 1 0 0 0 0 3 0 1 *** 1988 1 7 7 5 0 0 1 0 0 1 0 2 24 1989 4 6 2 1 3 0 0 0 0 0 2 3 21 1990 9 8 3 3 1 0 0 0 0 0 0 3 27 1991 9 5 9 3 1 0 0 0 0 0 2 7 36 1992 7 4 6 8 *** 0 0 0 0 0 1 7 *** 1993 8 11 6 6 2 1 0 0 0 0 3 1 38 1994 2 1 6 2 3 0 0 0 0 0 2 1 17 1995 1 5 5 6 1 0 0 0 1 0 0 7 26 1996 2 9 14 2 3 1 0 0 0 2 1 2 36 1997 2 0 6 5 1 0 0 0 0 4 4 5 27 1998 7 6 5 6 3 0 0 0 0 0 0 0 27 1999 9 6 12 3 0 0 0 0 0 0 3 1 34 2000 4 3 1 0 0 0 0 0 0 2 2 3 15 MEAN 5 5 5 4 2 0 0 0 0 1 1 3 26 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 14 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS PRECIPITATION EQUAL OR MORE THAN 10 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 0 0 0 3 0 0 0 0 0 0 1 0 4 1962 0 0 1 2 0 0 0 0 0 0 0 0 3 1963 0 0 2 1 1 0 0 0 0 0 0 0 4 1964 0 1 2 0 0 0 0 0 0 0 0 0 3 1965 0 0 0 0 1 0 0 0 0 0 0 0 1 1966 0 0 0 1 0 0 0 0 0 0 0 0 1 1967 0 3 1 4 0 0 0 0 0 0 0 0 8 1968 0 1 0 1 0 0 0 0 0 0 0 1 3 1969 1 0 0 3 0 0 0 0 0 0 1 0 5 1970 1 0 1 1 0 0 0 0 0 0 0 0 3 1971 0 0 1 1 0 0 0 0 0 0 0 1 3 1972 2 0 0 1 1 0 0 0 0 0 *** 0 *** 1973 0 1 0 0 0 0 0 0 0 0 0 0 1 1974 4 0 *** *** *** *** 0 0 0 0 0 1 *** 1975 0 0 0 3 0 0 0 0 0 0 0 0 3 1976 1 *** *** 1 0 0 0 0 0 0 0 1 *** 1977 2 0 1 2 0 0 0 0 0 0 0 1 6 1978 1 3 0 0 0 0 0 0 0 0 1 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 0 0 1 0 0 0 0 0 0 0 0 1 2 1981 0 4 0 0 1 0 0 0 0 0 0 0 5 1982 1 3 4 0 0 0 0 0 0 0 2 1 11 1983 1 1 1 4 0 0 0 0 0 0 0 0 7 1984 2 0 1 0 *** 0 0 0 0 0 *** *** *** 1985 *** 0 1 0 0 0 0 0 0 0 0 1 *** 1986 0 1 3 1 0 0 0 0 0 0 0 2 7 1987 *** 0 1 1 0 0 0 0 0 1 0 1 *** 1988 0 0 2 2 0 0 0 0 0 0 0 0 4 1989 0 0 1 0 0 0 0 0 0 0 0 0 1 1990 1 1 1 0 0 0 0 0 0 0 0 2 5 1991 0 1 3 1 0 0 0 0 0 0 0 2 7 1992 1 0 0 1 *** 0 0 0 0 0 0 0 *** 1993 1 3 0 1 0 0 0 0 0 0 0 0 5 1994 0 0 2 1 1 0 0 0 0 0 0 0 4 1995 1 1 1 2 0 0 0 0 0 0 0 0 5 1996 0 1 1 0 0 0 0 0 0 0 0 0 2 1997 1 0 0 0 1 0 0 0 0 1 2 1 6 1998 1 3 1 2 1 0 0 0 0 0 0 0 8 1999 2 1 6 1 0 0 0 0 0 0 0 0 10 2000 0 0 0 0 0 0 0 0 0 1 0 2 3 MEAN 1 1 1 1 0 0 0 0 0 0 0 0 4 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 15 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 68 67 70 70 57 40 37 44 42 49 58 67 56 1962 65 61 54 58 56 49 54 55 45 60 72 82 59 1963 68 65 73 79 58 45 43 38 33 32 26 58 52 1964 29 47 40 30 26 26 31 30 35 32 43 45 35 1965 65 68 68 65 46 28 27 24 41 51 65 54 50 1966 68 75 73 68 58 46 34 35 43 54 66 62 57 1967 80 77 78 81 74 61 41 49 53 34 44 75 62 1968 79 90 83 76 75 56 49 44 48 60 80 88 69 1969 84 86 74 72 65 52 46 45 44 53 74 70 64 1970 86 75 67 52 38 30 37 38 40 44 47 72 52 1971 76 70 52 55 37 33 42 38 38 51 70 72 53 1972 88 79 80 67 61 40 38 42 43 52 *** 84 *** 1973 77 71 70 57 37 36 33 40 44 44 49 71 52 1974 84 87 *** *** *** *** 44 56 63 53 56 81 *** 1975 83 86 72 68 53 58 46 *** 54 50 52 77 *** 1976 77 *** *** 68 44 31 31 40 50 66 55 65 *** 1977 78 72 61 64 47 34 31 34 41 57 66 70 55 1978 79 77 70 56 64 59 55 54 42 54 80 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 72 75 68 62 58 53 50 49 59 64 74 71 63 1981 76 78 73 64 53 45 46 48 50 61 56 73 60 1982 *** *** 78 68 59 50 56 65 70 73 88 80 *** 1983 84 78 71 80 58 46 49 50 46 54 53 70 62 1984 74 74 73 46 *** 40 46 49 55 66 *** *** *** 1985 *** 67 77 58 50 43 47 53 40 57 69 78 *** 1986 76 85 81 67 44 34 48 46 38 53 68 85 60 1987 *** 79 68 61 41 38 33 35 39 59 53 62 *** 1988 70 75 75 58 39 26 28 33 34 48 51 74 51 1989 85 93 78 46 52 31 35 33 33 37 68 79 56 1990 91 90 72 63 43 33 31 32 32 40 44 70 53 1991 89 79 86 59 43 30 28 25 33 38 52 70 53 1992 79 63 69 68 *** 39 33 39 38 43 46 85 *** 1993 86 91 72 62 52 35 36 36 37 42 63 68 57 1994 68 64 71 55 46 33 35 35 32 50 59 72 52 1995 81 80 75 68 42 35 32 32 36 41 40 87 54 1996 81 82 85 55 39 29 28 25 33 42 56 63 52 1997 69 60 65 59 43 34 28 29 27 44 80 89 52 1998 88 84 73 66 51 34 31 35 31 40 50 58 53 1999 83 75 81 58 38 27 34 32 38 45 74 68 54 2000 69 75 55 35 26 28 32 31 36 52 67 85 49 MEAN 77 76 71 62 49 39 39 40 42 50 60 72 56 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 16 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 59 53 40 51 33 28 30 24 24 25 52 44 39 1962 50 47 43 39 53 60 50 39 26 42 57 66 48 1963 48 45 49 54 35 23 31 26 23 24 20 54 36 1964 44 51 49 30 21 18 19 21 31 28 34 45 33 1965 63 47 58 37 18 17 19 19 31 33 51 54 37 1966 62 59 53 40 31 29 22 23 27 29 43 64 40 1967 72 75 61 75 44 23 26 34 33 18 28 43 44 1968 71 85 73 42 24 25 27 25 23 28 53 84 47 1969 81 71 42 53 47 43 38 34 28 29 47 43 46 1970 60 38 42 26 20 19 23 26 25 24 27 41 31 1971 48 42 30 33 20 21 28 25 22 34 51 60 35 1972 83 79 79 48 34 23 31 28 30 33 *** 72 *** 1973 63 47 46 26 20 17 22 28 38 42 52 53 38 1974 76 85 *** *** *** *** 41 44 44 39 34 67 *** 1975 64 73 62 52 48 48 46 *** 35 34 35 62 *** 1976 59 *** *** 67 26 21 22 26 28 53 44 57 *** 1977 79 76 53 42 23 18 17 17 19 43 41 48 40 1978 53 56 42 31 48 40 35 34 18 27 59 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 73 69 55 45 33 31 27 26 32 40 57 54 45 1981 63 61 50 41 34 30 35 31 30 43 43 55 43 1982 70 65 59 49 41 37 39 46 49 56 72 80 55 1983 79 65 51 51 35 26 29 31 24 28 28 52 42 1984 52 55 35 27 *** 28 33 34 36 41 *** *** *** 1985 *** 45 49 42 37 26 30 33 21 28 36 69 *** 1986 52 67 64 39 21 21 30 25 23 26 44 73 40 1987 *** 51 38 31 23 24 20 19 22 36 32 37 *** 1988 39 42 41 32 20 17 18 21 18 28 32 49 30 1989 55 63 39 26 27 20 22 19 18 18 38 48 33 1990 75 67 33 30 26 21 21 20 18 21 24 48 34 1991 55 48 47 27 24 17 19 16 21 24 32 47 31 1992 50 36 32 36 *** 24 23 27 25 23 23 67 *** 1993 64 65 42 33 25 19 18 19 19 20 36 43 34 1994 46 37 43 29 23 21 21 20 20 31 34 43 31 1995 49 50 42 40 19 18 17 15 17 26 21 62 31 1996 45 47 55 27 20 18 16 14 18 25 30 39 30 1997 44 32 42 32 22 18 15 14 14 25 48 69 31 1998 66 56 45 34 29 21 22 22 19 23 26 34 33 1999 57 42 50 24 18 14 20 17 18 23 44 36 30 2000 41 42 26 16 14 16 17 16 18 27 39 60 28 MEAN 60 56 48 38 29 25 26 25 25 31 40 55 38 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 17 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 63 63 52 55 42 31 25 22 28 51 59 56 46 1962 64 51 54 65 35 39 51 40 32 53 64 78 52 1963 57 53 62 63 49 24 37 29 29 28 20 58 42 1964 32 50 44 29 23 19 19 24 33 32 46 44 33 1965 65 60 65 55 30 20 22 24 41 42 67 65 46 1966 69 70 70 67 55 42 28 26 34 45 69 76 54 1967 81 82 79 80 70 43 38 45 48 30 46 67 59 1968 79 88 84 79 69 41 42 38 38 53 81 88 65 1969 86 83 74 61 60 48 44 45 35 43 64 61 59 1970 74 52 50 35 25 22 25 29 32 36 38 58 40 1971 59 47 39 38 27 27 30 31 30 44 65 68 42 1972 89 85 78 56 48 25 35 32 41 48 *** 75 *** 1973 70 59 63 48 35 24 28 41 34 33 43 63 45 1974 88 85 *** *** *** *** 44 48 52 47 50 81 *** 1975 81 82 71 61 53 44 38 *** 44 43 44 71 *** 1976 65 *** *** 72 26 19 22 27 27 60 50 61 *** 1977 76 71 56 49 32 20 17 21 24 54 56 54 44 1978 64 60 52 37 52 30 38 34 19 46 71 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 74 74 65 50 39 33 29 28 37 48 65 69 51 1981 71 70 49 48 35 36 36 34 36 54 53 62 49 1982 78 79 66 55 50 42 44 55 58 71 83 78 63 1983 81 77 62 65 46 28 32 32 32 40 38 68 50 1984 68 70 47 37 *** 30 37 38 41 56 *** *** *** 1985 *** 61 69 53 42 33 34 39 35 45 52 78 *** 1986 68 81 81 54 28 26 34 33 32 36 *** 85 *** 1987 *** 61 49 33 27 25 19 20 24 37 36 42 *** 1988 42 48 39 31 20 17 19 22 19 30 36 52 31 1989 62 65 41 24 30 22 21 18 19 24 48 62 36 1990 83 71 38 34 28 22 21 18 20 25 31 55 37 1991 63 57 52 29 24 17 20 15 21 24 34 56 34 1992 65 39 37 35 *** 24 21 26 24 27 32 76 *** 1993 78 70 50 38 25 19 18 19 22 27 45 55 39 1994 58 39 46 30 24 21 20 20 21 33 43 49 34 1995 55 53 43 44 21 18 16 16 18 25 29 69 34 1996 49 55 58 30 22 18 16 15 20 27 38 50 33 1997 50 34 44 34 24 18 14 13 15 30 58 78 34 1998 76 62 50 40 28 20 20 22 20 26 38 47 37 1999 71 52 55 28 17 13 18 18 21 30 54 49 36 2000 50 48 30 18 14 15 16 17 22 34 47 72 32 MEAN 68 63 56 46 35 27 28 28 30 39 50 64 45 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 18 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS MINIMUM TEMPERATURE EQUAL OR LESS THAN -4 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 20 9 3 0 0 0 0 0 0 0 0 0 32 1962 7 0 0 0 0 0 0 0 0 0 11 17 35 1963 0 0 3 0 0 0 0 0 0 0 0 2 5 1964 31 3 0 0 0 0 0 0 0 0 5 31 70 1965 11 16 1 0 0 0 0 0 0 0 0 0 28 1966 0 0 0 0 0 0 0 0 0 0 8 24 32 1967 26 18 0 0 0 0 0 0 0 0 0 10 54 1968 10 8 0 0 0 0 0 0 0 0 0 0 18 1969 9 2 0 0 0 0 0 0 0 0 5 2 18 1970 5 1 0 0 0 0 0 *** *** 0 0 7 *** 1971 15 6 1 0 0 0 0 0 0 *** *** *** *** 1972 14 22 0 0 0 0 0 0 0 0 *** 14 *** 1973 27 3 2 0 0 0 0 0 0 0 6 19 57 1974 16 9 *** *** *** *** 0 0 0 0 0 6 *** 1975 13 5 3 0 0 0 0 *** 0 0 6 13 *** 1976 8 *** *** 0 0 0 0 0 0 0 10 9 *** 1977 22 4 0 0 0 0 0 0 0 3 18 27 74 1978 30 21 12 0 0 0 0 0 0 0 0 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 10 7 1 0 0 0 0 0 0 0 0 2 20 1981 7 2 0 0 0 0 0 0 0 0 0 0 9 1982 7 8 4 0 0 0 0 0 0 0 3 14 36 1983 15 *** 1 0 0 0 0 0 0 1 1 16 *** 1984 25 19 0 0 *** 0 0 0 0 0 *** *** *** 1985 *** 2 5 0 0 0 0 0 0 0 0 3 *** 1986 8 0 0 0 0 0 0 0 0 0 0 5 13 1987 *** 5 0 0 0 0 0 0 0 0 1 5 *** 1988 6 3 0 0 0 0 0 0 0 0 0 3 12 1989 22 14 0 0 0 0 0 0 0 0 0 0 36 1990 6 0 0 0 0 0 0 0 0 0 0 5 11 1991 5 4 0 0 0 0 0 0 0 0 0 0 9 1992 9 2 2 0 *** 0 0 0 0 0 0 1 *** 1993 11 0 0 0 0 0 0 0 0 0 0 2 13 1994 4 6 0 0 0 0 0 0 0 0 0 10 20 1995 1 1 0 0 0 0 0 0 0 0 2 1 5 1996 12 0 0 0 0 0 0 0 0 0 0 4 16 1997 0 8 0 0 0 0 0 0 0 0 0 0 8 1998 2 1 0 0 0 0 0 0 0 0 0 0 3 1999 4 0 0 0 0 0 0 0 0 0 0 0 4 2000 5 1 0 0 0 0 0 0 0 0 0 0 6 MEAN 11 6 1 0 0 0 0 0 0 0 2 7 27 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 19 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS MINIMUM TEMPERATURE EQUAL OR MORE THAN 21 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 0 0 0 0 0 3 9 1 0 0 0 0 13 1962 0 0 0 0 0 1 6 0 0 0 0 0 7 1963 0 0 0 0 0 6 7 0 0 0 0 0 13 1964 0 0 0 0 0 0 0 0 0 0 0 0 0 1965 0 0 0 0 0 0 5 0 0 0 0 0 5 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 0 0 0 0 0 0 0 0 0 0 0 0 0 1968 0 0 0 0 0 0 0 0 0 0 0 0 0 1969 0 0 0 0 0 0 0 0 1 0 0 0 1 1970 0 0 0 0 4 15 11 *** *** 0 0 0 *** 1971 0 0 0 0 5 17 8 1 1 *** *** *** *** 1972 0 0 0 0 2 8 11 2 0 0 *** 0 *** 1973 0 0 0 0 1 15 12 6 0 0 0 0 34 1974 0 0 *** *** *** *** 14 4 0 0 0 0 *** 1975 0 0 0 0 0 0 0 *** 0 0 0 0 *** 1976 0 *** *** 0 0 0 19 27 1 0 0 0 *** 1977 0 0 0 0 0 0 0 0 0 0 0 0 0 1978 0 0 0 0 0 0 0 0 0 0 0 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 0 0 0 0 0 0 0 0 0 0 0 0 0 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 3 2 0 0 0 0 5 1983 0 *** 0 0 0 0 2 1 0 0 0 0 *** 1984 0 0 0 0 *** 0 0 0 0 0 *** *** *** 1985 *** 0 0 0 0 10 18 0 0 0 0 0 *** 1986 0 0 0 0 0 8 7 2 0 0 0 0 17 1987 *** 0 0 1 3 5 12 4 0 0 0 0 *** 1988 0 0 0 0 3 14 24 13 2 0 0 0 56 1989 0 0 0 0 3 18 20 3 2 0 0 0 46 1990 0 0 0 1 4 19 19 13 1 0 0 0 57 1991 0 0 0 0 2 11 12 9 3 0 0 0 37 1992 0 0 0 0 *** 16 13 7 0 0 0 0 *** 1993 0 0 0 0 4 12 16 5 0 0 0 0 37 1994 0 0 0 2 2 19 21 15 0 0 0 0 59 1995 0 0 0 0 1 12 28 14 0 0 0 0 55 1996 0 0 0 1 1 18 18 9 3 0 0 0 50 1997 0 0 0 0 2 26 23 14 3 0 0 0 68 1998 0 0 0 1 3 10 22 19 6 0 0 0 61 1999 0 0 0 0 3 19 21 11 1 0 0 0 55 2000 0 0 0 1 9 12 16 6 3 0 0 0 47 MEAN 0 0 0 0 1 8 10 5 1 0 0 0 25 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 20 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR LESS THAN 0 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 0 0 0 0 0 0 0 0 1964 0 0 0 0 0 0 0 0 0 0 0 0 0 1965 0 0 0 0 0 0 0 0 0 0 0 0 0 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 0 0 0 0 0 0 0 0 0 0 0 0 0 1968 0 0 0 0 0 0 0 0 0 0 0 0 0 1969 0 0 0 0 0 0 0 0 0 0 0 0 0 1970 0 0 0 0 0 0 0 0 0 0 0 0 0 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 3 6 0 0 0 0 0 0 0 0 *** 2 *** 1973 0 0 0 0 0 0 0 0 0 0 0 0 0 1974 1 5 *** *** *** *** 0 0 0 0 0 0 *** 1975 0 0 0 0 0 0 0 *** 0 0 0 0 *** 1976 0 *** *** *** *** *** *** *** 0 0 0 0 *** 1977 1 0 0 0 0 0 0 0 0 0 0 0 1 1978 0 0 0 0 0 0 0 0 0 0 0 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 0 1 0 0 0 0 0 0 0 0 0 0 1 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 0 0 0 0 0 0 0 1983 0 0 0 0 0 0 0 0 0 0 0 0 0 1984 0 0 0 0 *** 0 0 0 0 0 *** *** *** 1985 *** 0 0 0 0 0 0 0 0 0 0 0 *** 1986 0 0 0 0 0 *** *** *** 0 0 0 2 *** 1987 *** 0 0 0 0 0 0 0 0 0 0 0 *** 1988 0 0 0 0 0 0 0 0 0 0 0 0 0 1989 2 1 0 0 0 0 0 0 0 0 0 0 3 1990 0 0 0 0 0 0 0 0 0 0 0 0 0 1991 0 1 0 0 0 0 0 0 0 0 0 0 1 1992 4 0 0 0 *** 0 0 0 0 0 0 0 *** 1993 2 0 0 0 0 0 0 0 0 0 0 0 2 1994 0 0 0 0 0 0 0 0 0 0 0 0 0 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 1 0 0 0 0 0 0 0 0 0 0 0 1 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 21 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR MORE THAN 30 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 0 0 0 4 27 29 31 31 16 5 0 0 143 1962 0 0 0 0 21 27 31 31 17 13 0 0 140 1963 0 0 0 2 7 30 31 31 30 30 18 0 179 1964 0 0 0 2 27 30 31 31 29 7 0 0 157 1965 0 0 0 3 26 30 31 31 30 29 3 0 183 1966 0 0 0 1 10 30 31 31 28 17 2 0 150 1967 0 0 0 0 11 30 31 31 30 17 1 0 151 1968 0 0 0 9 18 30 31 31 30 13 0 0 162 1969 0 0 2 3 22 24 31 31 24 10 0 0 147 1970 0 0 0 11 25 28 30 31 19 11 0 0 155 1971 0 0 4 5 25 30 31 31 13 5 0 0 144 1972 0 0 0 4 9 27 26 15 17 0 *** 0 *** 1973 0 0 0 8 26 30 29 31 24 6 1 0 155 1974 0 0 *** *** *** *** 31 31 24 0 0 0 *** 1975 0 0 0 3 26 30 31 *** 11 7 0 0 *** 1976 0 *** *** *** *** *** *** *** 29 2 0 0 *** 1977 0 0 7 7 30 30 31 31 29 8 0 0 173 1978 0 0 0 11 25 29 31 28 29 5 0 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 0 0 0 6 26 30 31 31 26 10 0 0 160 1981 0 0 0 9 22 29 28 30 24 1 0 0 143 1982 0 0 0 8 23 30 31 31 27 5 0 0 155 1983 0 0 0 1 26 30 31 31 23 8 0 0 150 1984 0 0 0 13 *** 30 30 31 21 3 *** *** *** 1985 *** 0 0 9 22 29 30 30 27 7 0 0 *** 1986 0 0 0 0 19 *** *** *** 23 9 0 0 *** 1987 *** 0 0 11 21 30 31 31 20 4 0 0 *** 1988 0 0 0 7 23 30 31 29 19 0 0 0 139 1989 0 0 0 1 13 30 31 31 23 11 0 0 140 1990 0 0 0 3 23 30 30 31 26 5 0 0 148 1991 0 0 0 5 11 28 31 31 21 0 0 0 127 1992 0 0 0 0 *** 30 31 26 12 0 0 0 *** 1993 0 0 0 3 14 29 31 30 23 2 0 0 132 1994 0 0 0 6 19 30 31 31 5 0 0 0 122 1995 0 0 0 1 7 29 31 31 21 5 0 0 125 1996 0 0 0 2 13 28 31 29 27 1 0 0 131 1997 0 0 0 0 13 30 31 30 21 8 0 0 133 1998 0 0 0 8 18 29 31 31 23 8 0 0 148 1999 0 0 0 0 18 30 30 31 22 5 0 0 136 2000 0 0 0 16 31 25 31 31 25 0 0 0 159 MEAN 0 0 0 5 20 29 31 30 23 7 1 0 146 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 22 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR MORE THAN 40 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 0 0 0 0 0 2 1 0 0 0 0 0 3 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 2 1 0 0 0 0 0 3 1964 0 0 0 0 0 0 3 3 0 0 0 0 6 1965 0 0 0 0 0 0 9 0 0 0 0 0 9 1966 0 0 0 0 0 5 5 2 0 0 0 0 12 1967 0 0 0 0 0 4 2 0 0 0 0 0 6 1968 0 0 0 0 0 2 4 1 1 0 0 0 8 1969 0 0 0 0 1 3 2 0 0 0 0 0 6 1970 0 0 0 0 1 6 1 6 0 0 0 0 14 1971 0 0 0 0 1 0 2 0 0 0 0 0 3 1972 0 0 0 0 0 3 1 0 0 0 *** 0 *** 1973 0 0 0 0 0 7 9 4 0 0 0 0 20 1974 0 0 *** *** *** *** 9 2 0 0 0 0 *** 1975 0 0 0 0 0 7 13 *** 0 0 0 0 *** 1976 0 *** *** *** *** *** *** *** 0 0 0 0 *** 1977 0 0 0 0 0 7 9 3 0 0 0 0 19 1978 0 0 0 0 0 5 4 0 0 0 0 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 0 0 0 0 0 7 3 3 0 0 0 0 13 1981 0 0 0 0 0 1 4 0 0 0 0 0 5 1982 0 0 0 0 0 2 7 9 0 0 0 0 18 1983 0 0 0 0 0 8 19 6 0 0 0 0 33 1984 0 0 0 0 *** 0 0 12 0 0 *** *** *** 1985 *** 0 0 0 0 5 4 0 0 0 0 0 *** 1986 0 0 0 0 0 *** *** *** 0 0 0 0 *** 1987 *** 0 0 0 0 0 1 0 0 0 0 0 *** 1988 0 0 0 0 0 6 3 0 0 0 0 0 9 1989 0 0 0 0 0 2 4 0 0 0 0 0 6 1990 0 0 0 0 0 3 0 0 0 0 0 0 3 1991 0 0 0 0 0 0 1 0 0 0 0 0 1 1992 0 0 0 0 *** 0 0 0 0 0 0 0 *** 1993 0 0 0 0 0 2 0 0 0 0 0 0 2 1994 0 0 0 0 0 1 0 2 0 0 0 0 3 1995 0 0 0 0 0 1 7 0 0 0 0 0 8 1996 0 0 0 0 0 4 0 0 1 0 0 0 5 1997 0 0 0 0 0 1 3 1 0 0 0 0 5 1998 0 0 0 0 0 0 7 1 0 0 0 0 8 1999 0 0 0 0 0 7 1 0 0 0 0 0 8 2000 0 0 0 0 1 0 0 0 0 0 0 0 1 MEAN 0 0 0 0 0 3 4 2 0 0 0 0 9 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 23 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS MAXIMUM TEMPERATURE EQUAL OR MORE THAN 45 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 0 0 0 0 0 0 0 0 0 0 0 0 0 1963 0 0 0 0 0 0 0 0 0 0 0 0 0 1964 0 0 0 0 0 0 0 0 0 0 0 0 0 1965 0 0 0 0 0 0 0 0 0 0 0 0 0 1966 0 0 0 0 0 0 0 0 0 0 0 0 0 1967 0 0 0 0 0 0 0 0 0 0 0 0 0 1968 0 0 0 0 0 0 0 0 0 0 0 0 0 1969 0 0 0 0 0 0 0 0 0 0 0 0 0 1970 0 0 0 0 0 0 0 0 0 0 0 0 0 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 0 0 0 0 0 0 0 0 0 0 *** 0 *** 1973 0 0 0 0 0 0 0 0 0 0 0 0 0 1974 0 0 *** *** *** *** 0 0 0 0 0 0 *** 1975 0 0 0 0 0 0 1 *** 0 0 0 0 *** 1976 0 *** *** *** *** *** *** *** 0 0 0 0 *** 1977 0 0 0 0 0 0 0 0 0 0 0 0 0 1978 0 0 0 0 0 0 0 0 0 0 0 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 0 0 0 0 0 2 0 0 0 0 0 0 2 1981 0 0 0 0 0 0 0 0 0 0 0 0 0 1982 0 0 0 0 0 0 1 0 0 0 0 0 1 1983 0 0 0 0 0 0 2 0 0 0 0 0 2 1984 0 0 0 0 *** 0 0 0 0 0 *** *** *** 1985 *** 0 0 0 0 0 0 0 0 0 0 0 *** 1986 0 0 0 0 0 *** *** *** 0 0 0 0 *** 1987 *** 0 0 0 0 0 0 0 0 0 0 0 *** 1988 0 0 0 0 0 0 0 0 0 0 0 0 0 1989 0 0 0 0 0 0 0 0 0 0 0 0 0 1990 0 0 0 0 0 0 0 0 0 0 0 0 0 1991 0 0 0 0 0 0 0 0 0 0 0 0 0 1992 0 0 0 0 *** 0 0 0 0 0 0 0 *** 1993 0 0 0 0 0 0 0 0 0 0 0 0 0 1994 0 0 0 0 0 0 0 0 0 0 0 0 0 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 0 0 0 0 0 0 0 0 0 0 0 0 0 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0 0 0 0 0 0 0 0 0 0 0 0 0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 24 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF FREEZING DAYS , DATE OF START AND END FREEZING START END YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MO DAY MO DAY -------------- 1961 27 21 11 0 0 0 0 0 0 3 21 17 100 10 27 3 20 1962 26 2 1 0 0 0 0 0 0 0 27 31 87 11 3 3 1 1963 2 2 6 0 0 0 0 0 0 0 0 6 16 12 26 3 31 1964 31 20 2 0 0 0 0 0 0 5 21 31 110 10 27 3 22 1965 31 27 12 1 0 0 0 0 0 0 0 6 77 12 22 4 7 1966 5 3 2 0 0 0 0 0 0 0 8 31 49 11 23 3 6 1967 31 23 1 3 0 0 0 0 0 0 0 26 84 12 1 4 3 1968 29 27 0 0 0 0 0 0 0 0 0 7 63 12 3 2 27 1969 31 25 1 0 0 0 0 0 0 0 17 15 89 11 13 3 2 1970 28 12 4 0 0 0 0 *** *** 1 2 19 *** 10 24 3 15 1971 25 21 5 0 0 0 0 0 0 *** *** *** *** 1 1 3 9 1972 27 25 6 0 0 0 0 0 0 0 *** 24 *** 12 5 3 22 1973 30 9 4 0 0 0 0 0 0 0 12 28 83 11 8 3 12 1974 26 17 *** *** *** *** 0 0 0 0 7 25 *** 11 11 2 24 1975 25 15 11 2 0 0 0 *** 0 5 21 28 *** 10 21 4 10 1976 22 *** *** 2 0 0 0 0 0 0 18 27 *** 11 1 4 5 1977 28 23 1 0 0 0 0 0 0 8 26 31 117 10 21 3 16 1978 30 27 20 2 0 0 0 0 0 0 11 *** *** 11 4 4 4 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1980 19 23 6 0 0 0 0 0 0 0 0 15 63 12 3 3 13 1981 28 16 3 2 0 0 0 0 0 0 5 18 72 11 14 4 4 1982 19 15 4 0 0 0 0 0 0 1 12 27 78 10 26 3 9 1983 20 *** 9 0 0 0 0 0 0 1 7 23 *** 10 21 3 27 1984 31 25 8 0 *** 0 0 0 0 1 *** *** *** 10 25 3 18 1985 *** 8 12 0 0 0 0 0 0 0 4 12 *** 11 22 3 15 1986 21 15 7 0 0 0 0 0 0 0 8 17 68 11 15 3 24 1987 *** 12 3 0 0 0 0 0 0 6 4 19 *** 10 13 3 23 1988 20 11 2 0 0 0 0 0 0 0 6 7 46 11 16 3 25 1989 29 24 1 0 0 0 0 0 0 0 1 17 72 11 23 3 1 1990 18 14 4 0 0 0 0 0 0 0 3 15 54 11 17 3 22 1991 22 15 3 0 0 0 0 0 0 0 3 12 55 11 24 3 13 1992 20 15 11 0 *** 0 0 0 0 0 2 6 *** 11 28 3 27 1993 23 6 4 0 0 0 0 0 0 0 8 15 56 11 15 3 24 1994 14 15 0 2 0 0 0 0 0 0 0 20 51 12 6 4 6 1995 16 9 7 0 0 0 0 0 0 2 4 18 56 10 19 3 9 1996 22 11 0 0 0 0 0 0 0 0 8 13 54 11 13 2 28 1997 15 17 4 0 0 0 0 0 0 0 2 8 46 11 26 3 12 1998 17 13 4 0 0 0 0 0 0 0 0 5 39 12 6 3 5 1999 15 4 0 0 0 0 0 0 0 0 1 13 33 11 30 2 23 2000 17 14 6 0 0 0 0 0 0 0 5 6 48 11 12 3 17 MEAN 23 16 5 0 0 0 0 0 0 1 8 18 71 10 13 4 10 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 25 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 2.9 5.0 10.7 15.3 25.0 29.5 31.4 27.5 23.8 16.7 7.8 8.4 17.0 1962 6.1 10.1 13.5 16.7 25.0 27.0 29.3 24.4 23.0 19.4 4.3 3.8 16.9 1963 10.0 10.2 11.4 15.4 21.6 30.1 32.2 29.3 27.8 25.7 21.6 7.1 20.2 1964 0.4 6.1 14.0 19.3 28.6 30.9 32.1 32.3 27.7 19.8 13.1 1.9 18.8 1965 4.8 7.3 11.3 14.2 24.6 28.7 32.2 30.3 26.6 24.2 15.4 9.1 19.1 1966 7.7 9.7 10.3 15.5 21.1 28.5 31.7 31.2 27.3 23.3 16.0 8.6 19.2 1967 8.2 6.8 10.4 11.8 19.2 26.9 30.3 28.8 27.4 23.2 19.0 11.2 18.6 1968 7.7 5.0 9.4 15.1 19.7 27.4 29.2 29.9 26.9 20.0 14.8 9.9 17.9 1969 2.9 6.0 13.2 14.7 23.6 28.6 29.6 28.3 24.6 19.8 8.3 7.6 17.3 1970 4.4 8.6 11.4 20.4 27.6 30.1 30.4 31.0 23.3 18.6 13.2 6.1 18.8 1971 3.6 7.5 14.6 18.7 27.2 30.2 30.5 28.8 22.4 17.9 13.0 8.2 18.5 1972 0.8 -2.5 9.4 16.9 20.6 28.4 28.6 ****** 23.7 19.0 ****** 3.0 ****** 1973 1.0 9.0 11.4 19.4 25.6 31.6 32.4 29.6 25.5 18.4 10.8 4.2 18.2 1974 1.4 1.4 ****** ****** ****** ****** 31.3 29.2 24.1 14.8 13.6 5.0 ****** 1975 3.6 5.3 12.1 16.9 26.4 32.0 34.5 ****** 23.7 19.7 9.9 4.4 ****** 1976 6.1 ****** ****** 19.7 25.6 31.0 33.0 31.1 27.3 14.8 8.4 4.5 ****** 1977 -1.7 7.9 17.7 17.9 24.8 31.3 31.0 28.9 24.1 15.2 12.1 7.3 18.0 1978 4.2 6.9 11.0 19.4 23.4 28.1 28.9 28.0 25.7 19.0 8.4 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 2.0 4.4 11.1 19.7 24.4 29.5 30.6 28.8 24.4 18.7 13.4 8.5 18.0 1981 6.0 8.0 13.9 19.5 25.0 28.7 30.6 29.0 26.3 17.2 14.0 9.4 19.0 1982 4.7 4.5 9.8 19.7 24.9 29.8 31.8 28.7 24.2 18.2 8.6 2.2 17.3 1983 3.1 6.8 9.5 16.3 25.3 30.7 33.0 31.3 25.6 18.3 14.1 5.7 18.3 1984 4.6 3.0 13.1 20.8 ****** 29.6 31.9 31.9 24.5 18.3 ****** ****** ****** 1985 ****** 9.6 10.0 20.3 25.6 31.2 31.9 27.8 24.4 18.6 12.3 6.6 ****** 1986 4.7 5.1 7.2 15.8 24.4 29.1 30.2 27.7 24.7 19.3 ****** 3.3 ****** 1987 ****** 7.2 12.9 19.0 25.7 29.0 30.2 29.6 24.9 14.4 12.0 6.9 ****** 1988 4.3 6.1 11.5 18.6 25.8 30.9 31.5 28.5 24.7 17.9 12.6 7.6 18.3 1989 1.1 1.8 11.8 18.5 22.7 30.8 31.3 28.5 24.8 19.1 11.0 7.7 17.4 1990 2.5 5.3 11.4 18.5 26.7 31.3 30.7 30.1 25.6 18.1 12.9 5.3 18.2 1991 4.0 4.7 9.9 18.5 23.2 29.5 30.6 28.6 24.3 17.2 11.4 6.7 17.4 1992 2.5 6.6 7.7 16.0 ****** 29.5 30.4 26.9 22.7 16.7 12.1 6.2 ****** 1993 1.0 7.1 9.7 18.5 23.9 29.5 29.8 27.8 25.3 15.5 10.7 6.6 17.1 1994 5.7 6.0 13.4 18.6 25.5 30.1 31.0 30.0 20.8 16.9 14.7 5.0 18.1 1995 5.9 7.5 11.1 17.8 23.5 29.5 32.8 30.4 24.5 17.4 12.9 4.1 18.1 1996 2.9 6.8 10.0 18.0 24.3 29.8 30.2 28.5 27.3 18.0 9.9 6.9 17.7 1997 5.9 6.0 10.3 17.8 24.2 30.6 32.3 29.6 25.5 20.1 10.3 6.2 18.2 1998 3.9 5.9 12.1 20.2 24.2 28.9 31.8 30.0 25.5 18.8 13.8 9.4 18.7 1999 4.2 10.1 11.0 18.5 25.3 31.3 30.4 30.0 25.0 19.6 10.5 7.2 18.6 2000 5.0 6.9 12.0 23.4 28.9 29.1 29.7 28.9 26.1 18.3 9.6 6.6 18.7 MEAN 4.0 6.3 11.4 17.9 24.5 29.7 31.1 29.2 25.0 18.6 12.1 6.4 18.0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 26 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 -3.7 -2.5 0.8 6.2 10.7 10.3 11.6 6.7 3.4 1.7 -0.5 -0.5 3.7 1962 -1.6 0.8 2.9 6.8 12.7 15.2 18.0 11.2 5.6 8.6 -2.0 -0.3 6.5 1963 1.7 0.7 3.4 8.2 8.8 9.4 15.4 9.9 7.0 5.4 -2.2 -1.2 5.5 1964 -14.4 -3.9 1.8 0.1 5.3 5.7 7.4 9.3 9.7 1.5 -0.5 -9.9 1.0 1965 -1.8 -1.0 4.3 3.4 4.7 3.9 7.7 6.0 10.2 9.9 7.3 -0.2 4.5 1966 1.6 3.8 3.6 6.5 8.9 12.5 10.2 10.3 9.4 8.7 7.0 2.6 7.1 1967 4.4 3.0 5.4 8.0 10.9 11.3 12.7 14.4 13.8 2.2 2.9 3.2 7.7 1968 3.7 3.1 6.1 7.3 8.4 11.8 13.1 12.5 9.6 7.0 8.9 7.6 8.3 1969 0.4 2.7 5.3 6.4 14.1 16.1 15.5 13.5 7.4 4.9 0.6 -0.8 7.2 1970 -0.3 -0.8 0.8 4.2 6.1 6.5 9.3 11.3 5.2 1.7 -1.7 -2.8 3.3 1971 -4.2 -2.6 -0.5 4.0 6.1 8.2 12.0 9.5 3.2 4.6 5.2 2.0 4.0 1972 -1.2 -5.6 5.7 7.1 7.8 6.8 10.5 ****** 7.6 5.1 ****** -1.1 ****** 1973 -4.3 0.6 2.8 4.8 5.4 8.3 10.8 12.2 9.8 3.4 -0.5 -3.2 4.2 1974 -1.6 -0.8 ****** ****** ****** ****** 16.8 16.7 13.4 2.9 1.6 0.7 ****** 1975 -0.9 1.8 5.7 8.5 15.0 19.9 19.3 ****** 9.2 5.7 -2.6 -1.1 ****** 1976 0.1 ****** ****** 13.5 6.5 7.0 10.0 11.4 9.5 6.4 -2.1 -2.8 ****** 1977 -4.8 3.2 8.6 6.7 7.1 6.9 5.3 5.3 2.7 4.1 2.5 -1.3 3.9 1978 -2.3 -0.0 1.3 5.0 13.2 13.5 14.2 12.6 3.0 4.7 2.9 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 -2.6 -0.3 3.9 9.0 10.1 13.1 12.7 10.5 10.0 7.6 6.7 1.8 6.9 1981 0.8 2.5 5.2 8.2 9.8 12.2 14.6 12.5 10.4 6.8 3.7 2.5 7.4 1982 ****** ****** 3.9 10.5 13.4 15.5 18.5 18.6 15.3 11.5 5.3 -0.1 ****** 1983 0.6 2.4 1.7 9.1 11.5 11.8 15.6 14.5 7.5 3.5 -0.6 -1.3 6.4 1984 -2.0 -3.3 1.9 3.5 ****** 10.5 15.7 16.4 11.0 8.4 ****** ****** ****** 1985 ****** 0.8 3.6 9.2 11.3 12.5 14.7 12.9 5.5 4.3 1.6 2.2 ****** 1986 -1.7 1.2 2.7 5.4 4.5 7.2 13.7 9.7 5.4 4.2 ****** 0.1 ****** 1987 ****** 0.2 1.8 2.7 5.3 8.4 6.4 6.6 4.4 0.5 -1.9 -4.4 ****** 1988 -6.1 -3.6 0.1 2.8 3.7 4.7 5.9 6.0 1.6 1.5 -1.7 -0.9 1.2 1989 -5.0 -3.2 1.0 -1.1 5.4 6.6 8.6 4.2 0.9 -2.5 0.4 0.1 1.3 1990 -0.4 0.8 -1.1 3.5 7.9 8.4 7.4 6.0 1.8 -2.0 -3.9 -3.3 2.1 1991 -2.0 -3.3 1.8 1.7 3.1 4.1 5.8 1.5 1.9 -1.9 -3.2 -2.0 0.6 1992 -4.1 -5.6 -5.1 2.8 ****** 8.6 8.0 7.6 3.0 -2.1 -5.2 1.6 ****** 1993 -3.1 2.3 -0.6 3.6 5.2 5.4 6.0 4.6 3.3 -3.3 -1.2 -2.2 1.7 1994 -2.8 -5.5 2.5 2.4 5.6 7.1 8.3 7.0 -1.3 1.6 2.0 -4.0 1.9 1995 -1.7 -0.5 0.3 5.4 2.3 5.6 7.1 4.2 0.2 -1.8 -5.4 -1.4 1.2 1996 -5.9 -1.1 2.7 1.4 2.2 4.5 4.2 0.7 3.3 -1.0 -3.5 -3.4 0.3 1997 -3.3 -7.1 -1.2 2.7 3.8 6.1 4.3 1.5 -1.3 1.0 2.4 2.5 0.9 1998 -0.1 -0.4 2.3 6.8 6.8 6.2 8.1 7.9 2.6 -0.4 -1.3 -2.4 3.0 1999 -1.2 0.5 2.3 1.4 1.7 2.6 6.0 5.2 2.5 1.5 1.5 -3.0 1.7 2000 -4.9 -2.6 -4.0 -0.2 0.9 2.2 4.7 3.6 3.3 2.4 -1.2 1.5 0.5 MEAN -2.1 -0.6 2.2 5.2 7.4 8.9 10.7 9.0 5.9 3.3 0.6 -0.7 4.2 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 27 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 3.57 3.78 4.94 7.05 9.43 9.23 10.05 7.50 6.03 5.11 4.39 4.29 6.28 1962 4.01 4.71 5.54 7.16 11.46 13.22 15.45 10.00 6.69 8.20 3.85 4.41 7.89 1963 5.06 4.71 5.82 8.19 8.16 8.86 12.60 8.83 7.18 6.52 4.03 4.21 7.02 1964 1.66 3.44 5.36 4.76 6.46 6.53 7.58 8.52 8.69 5.16 4.46 2.28 5.41 1965 4.03 4.14 6.42 5.68 6.25 5.90 7.63 6.71 9.05 8.78 7.36 5.10 6.42 1966 4.97 5.79 5.72 7.01 8.21 10.50 8.99 8.94 8.46 8.07 7.34 5.43 7.45 1967 6.10 5.58 6.46 7.78 9.37 9.66 10.47 11.81 11.42 5.16 5.50 5.75 7.92 1968 5.87 5.65 6.83 7.40 7.95 9.87 10.78 10.35 8.58 7.24 8.29 7.76 8.05 1969 4.57 5.34 6.48 7.07 11.79 13.43 12.76 11.15 7.79 6.30 4.91 4.16 7.98 1970 4.30 4.19 4.76 5.94 6.76 7.04 8.38 9.75 6.36 5.14 4.00 3.62 5.85 1971 3.36 3.76 4.37 5.99 6.80 8.00 10.11 8.66 5.60 6.31 6.42 5.25 6.22 1972 4.09 3.12 6.75 7.53 7.75 7.88 9.49 ****** 7.72 6.57 ****** 4.35 ****** 1973 3.32 4.70 5.67 6.49 6.71 7.96 9.44 10.74 9.14 6.52 4.74 3.64 6.59 1974 4.10 4.28 ****** ****** ****** ****** 14.17 14.05 11.33 5.44 5.02 4.73 ****** 1975 4.23 5.24 7.49 8.22 12.66 17.16 17.26 ****** 8.58 7.20 3.79 4.17 ****** 1976 4.46 ****** ****** 11.71 7.10 7.35 8.87 9.69 8.57 7.03 4.16 3.67 ****** 1977 3.20 5.87 8.74 7.22 7.29 7.30 6.59 6.56 5.53 6.06 5.38 4.04 6.15 1978 3.79 4.50 4.86 6.44 11.43 11.64 12.06 10.84 5.61 6.20 5.46 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 3.79 4.52 5.94 8.50 8.94 10.92 10.59 9.22 8.83 7.59 7.13 5.05 7.58 1981 4.69 5.29 6.44 7.94 8.82 10.24 11.97 10.40 9.07 7.13 5.84 5.24 7.76 1982 ****** ****** 5.93 9.42 11.14 12.73 15.54 15.69 12.67 10.12 6.58 4.55 ****** 1983 4.78 5.45 5.14 8.39 10.27 10.03 12.84 11.97 7.56 5.85 4.32 4.08 7.56 1984 3.86 3.57 5.30 5.73 ****** 9.41 12.85 13.44 9.64 8.07 ****** ****** ****** 1985 ****** 4.83 5.89 8.47 9.89 10.56 12.12 10.79 6.64 6.11 4.96 5.29 ****** 1986 3.97 4.85 5.47 6.59 6.29 7.51 11.29 9.04 6.61 6.11 ****** 4.56 ****** 1987 ****** 4.51 5.27 5.47 6.62 8.12 6.94 6.94 5.99 4.80 3.94 3.28 ****** 1988 2.86 3.49 4.57 5.70 5.68 6.13 6.78 6.74 5.03 4.91 4.08 4.26 5.02 1989 3.09 3.55 4.82 4.55 6.91 7.38 8.14 6.00 4.88 3.72 4.62 4.54 5.18 1990 4.37 4.73 4.10 5.69 7.68 7.98 7.33 6.85 5.28 3.97 3.35 3.54 5.41 1991 3.93 3.65 5.20 5.14 5.54 5.85 6.62 4.96 5.06 3.90 3.58 3.97 4.78 1992 3.39 2.98 3.24 5.44 ****** 7.98 7.69 7.56 5.53 3.89 3.18 5.09 ****** 1993 3.64 5.29 4.47 5.95 6.53 6.45 6.72 6.16 5.55 3.56 4.18 3.78 5.19 1994 3.73 3.00 5.39 5.44 6.60 7.21 7.78 7.18 4.01 5.06 5.19 3.47 5.34 1995 3.92 4.41 4.80 6.77 5.32 6.52 7.26 5.99 4.60 4.02 3.04 4.14 5.06 1996 3.06 4.15 5.49 5.15 5.44 6.13 5.86 4.68 5.70 4.34 3.44 3.57 4.75 1997 3.46 2.66 4.20 5.79 5.80 6.77 6.03 5.00 3.99 4.84 5.39 5.31 4.94 1998 4.42 4.34 5.29 7.21 7.29 6.82 7.76 7.69 5.35 4.42 3.99 3.72 5.69 1999 4.20 4.73 5.35 4.93 5.03 5.30 6.82 6.36 5.31 4.91 4.96 3.54 5.12 2000 3.17 3.67 3.36 4.44 4.70 5.21 6.11 5.67 5.60 5.30 4.12 4.93 4.69 MEAN 3.97 4.39 5.46 6.69 7.78 8.60 9.69 8.71 7.06 5.89 4.86 4.40 6.46 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 28 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 5.02 5.33 6.96 9.91 13.27 13.02 14.17 10.59 8.52 7.21 6.19 6.05 8.85 1962 5.64 6.65 7.80 10.08 16.03 18.48 21.57 14.05 9.46 11.53 5.42 6.21 11.08 1963 7.13 6.63 8.20 11.50 11.50 12.49 17.71 12.47 10.16 9.22 5.71 5.93 9.89 1964 2.34 4.84 7.55 6.72 9.16 9.27 10.73 12.04 12.27 7.30 6.30 3.21 7.64 1965 5.67 5.83 9.02 8.01 8.84 8.37 10.81 9.51 12.75 12.38 10.35 7.17 9.06 1966 7.00 8.14 8.04 9.87 11.56 14.78 12.70 12.63 11.95 11.38 10.33 7.63 10.50 1967 8.57 7.84 9.09 10.91 13.16 13.60 14.76 16.59 16.05 7.31 7.76 8.09 11.14 1968 8.25 7.94 9.59 10.41 11.19 13.90 15.18 14.59 12.11 10.21 11.64 10.88 11.32 1969 6.42 7.51 9.11 9.95 16.52 18.81 17.91 15.68 10.99 8.89 6.91 5.86 11.21 1970 6.05 5.90 6.71 8.40 9.57 9.97 11.85 13.76 9.00 7.26 5.65 5.11 8.27 1971 4.73 5.30 6.18 8.46 9.62 11.31 14.26 12.23 7.92 8.91 9.04 7.39 8.78 1972 5.74 4.38 9.47 10.59 10.91 11.12 13.36 ****** 10.89 9.26 ****** 6.11 ****** 1973 4.67 6.62 7.98 9.15 9.48 11.25 13.32 15.08 12.87 9.16 6.68 5.13 9.28 1974 5.76 6.02 ****** ****** ****** ****** 19.82 19.64 15.88 7.68 7.08 6.65 ****** 1975 5.95 7.35 10.50 11.55 17.73 23.91 24.01 ****** 12.08 10.14 5.34 5.87 ****** 1976 6.27 ****** ****** 16.36 10.03 10.40 12.54 13.67 12.10 9.90 5.86 5.17 ****** 1977 4.49 8.25 12.27 10.17 10.30 10.34 9.33 9.28 7.83 8.54 7.57 5.69 8.67 1978 5.33 6.33 6.85 9.09 16.02 16.33 16.93 15.25 7.95 8.75 7.68 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 5.33 6.35 8.35 11.95 12.59 15.36 14.91 13.01 12.45 10.70 10.03 7.11 10.68 1981 6.60 7.44 9.07 11.18 12.43 14.43 16.82 14.65 12.78 10.04 8.23 7.38 10.92 1982 ****** ****** 8.34 13.22 15.64 17.87 21.73 21.90 17.75 14.19 9.24 6.40 ****** 1983 6.71 7.65 7.23 11.79 14.41 14.14 18.04 16.82 10.68 8.26 6.10 5.74 10.63 1984 5.43 5.03 7.46 8.10 ****** 13.26 18.05 18.86 13.56 11.35 ****** ****** ****** 1985 ****** 6.81 8.29 11.92 13.90 14.88 17.04 15.17 9.38 8.62 7.00 7.44 ****** 1986 5.58 6.81 7.68 9.28 8.88 10.62 15.89 12.73 9.35 8.63 ****** 6.41 ****** 1987 ****** 6.35 7.42 7.72 9.35 11.47 9.83 9.83 8.48 6.77 5.57 4.63 ****** 1988 4.03 4.92 6.45 8.05 8.05 8.70 9.62 9.55 7.14 6.94 5.76 6.00 7.10 1989 4.35 4.99 6.79 6.41 9.75 10.43 11.51 8.51 6.92 5.27 6.51 6.40 7.32 1990 6.14 6.65 5.79 8.04 10.85 11.29 10.38 9.70 7.48 5.62 4.73 4.99 7.64 1991 5.52 5.14 7.32 7.26 7.84 8.30 9.38 7.05 7.18 5.52 5.05 5.59 6.76 1992 4.77 4.20 4.56 7.68 ****** 11.28 10.88 10.68 7.83 5.50 4.50 7.15 ****** 1993 5.11 7.44 6.30 8.39 9.23 9.14 9.52 8.73 7.86 5.04 5.90 5.33 7.33 1994 5.26 4.24 7.60 7.69 9.33 10.22 11.01 10.17 5.68 7.14 7.32 4.88 7.55 1995 5.52 6.21 6.75 9.54 7.54 9.24 10.28 8.49 6.51 5.68 4.30 5.82 7.16 1996 4.31 5.84 7.72 7.27 7.69 8.69 8.32 6.66 8.08 6.13 4.86 5.03 6.72 1997 4.88 3.76 5.92 8.16 8.21 9.59 8.55 7.10 5.68 6.84 7.58 7.46 6.98 1998 6.22 6.11 7.46 10.17 10.29 9.65 10.99 10.87 7.59 6.26 5.64 5.25 8.04 1999 5.90 6.66 7.52 6.98 7.13 7.53 9.65 9.02 7.52 6.95 6.99 4.99 7.24 2000 4.46 5.17 4.75 6.29 6.68 7.39 8.66 8.04 7.93 7.49 5.81 6.93 6.63 MEAN 5.59 6.18 7.68 9.43 10.96 12.13 13.64 12.29 9.96 8.31 6.85 6.19 9.10 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 29 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 2.99 4.02 6.79 9.07 20.08 29.85 32.92 27.48 22.19 13.39 4.95 5.58 14.94 1962 4.22 6.27 8.78 9.84 17.19 18.21 20.66 18.72 19.60 12.68 3.35 2.23 11.81 1963 5.73 6.33 6.50 7.08 15.35 31.18 31.07 28.86 28.04 24.40 21.00 4.62 17.51 1964 4.15 4.80 9.01 16.29 30.64 36.11 38.14 37.27 25.69 17.03 9.67 4.02 19.40 1965 3.25 5.11 5.44 9.90 23.89 32.00 38.40 34.43 22.88 18.91 7.91 4.82 17.25 1966 3.79 4.17 4.93 8.71 14.70 26.04 35.27 33.65 25.40 18.68 9.03 3.88 15.69 1967 2.69 2.37 3.87 3.20 10.51 24.43 29.49 24.46 21.92 22.10 15.31 6.35 13.89 1968 2.76 1.24 2.64 8.37 14.60 24.73 27.14 29.00 25.26 15.16 6.32 1.73 13.25 1969 1.28 2.18 7.36 8.01 14.21 22.17 24.94 24.01 21.90 15.80 4.94 5.06 12.65 1970 2.63 5.96 7.87 16.99 29.06 34.44 32.53 32.68 21.38 16.41 10.87 5.14 18.00 1971 3.85 5.91 12.18 14.41 28.01 32.72 30.62 28.78 21.14 13.44 6.71 4.15 16.83 1972 0.92 1.04 2.66 9.64 14.48 28.98 26.62 ****** 19.88 13.65 ****** 2.00 ****** 1973 2.23 5.62 6.20 14.66 24.47 36.46 36.49 27.40 21.32 13.59 7.46 3.80 16.64 1974 1.35 0.98 ****** ****** ****** ****** 26.77 21.73 15.24 9.86 9.43 2.44 ****** 1975 2.32 2.07 5.06 9.03 17.95 24.69 31.53 ****** 18.29 14.74 7.68 2.89 ****** 1976 3.45 ****** ****** 7.89 23.58 35.26 38.77 32.53 25.75 7.89 6.07 3.57 ****** 1977 1.17 3.09 9.33 11.58 22.16 36.73 36.69 31.75 23.41 9.64 7.30 5.19 16.50 1978 3.41 4.14 6.72 15.10 14.91 23.73 25.84 24.59 26.93 14.48 3.86 ****** ****** 1979 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1980 2.02 2.47 5.54 12.02 19.76 28.16 30.62 28.56 19.81 12.37 5.97 4.43 14.31 1981 3.02 3.65 7.62 13.17 20.67 26.12 28.00 26.27 22.95 10.40 8.51 4.89 14.61 1982 ****** ****** 4.44 11.00 17.17 25.19 26.36 19.37 13.96 8.08 2.46 1.54 ****** 1983 1.47 3.01 5.27 7.87 18.98 31.61 34.03 30.30 24.16 14.66 11.13 4.09 15.55 1984 3.39 3.10 8.36 17.94 ****** 29.20 30.29 29.99 18.83 11.14 ****** ****** ****** 1985 ****** 6.05 6.34 13.59 19.84 31.91 31.55 23.20 22.80 13.81 8.14 2.90 ****** 1986 3.43 2.31 2.99 9.46 23.28 30.69 27.56 25.61 22.72 15.60 ****** 1.69 ****** 1987 ****** 4.48 8.26 16.83 25.22 29.83 34.45 32.93 24.66 11.87 10.04 6.11 ****** 1988 4.67 5.07 8.00 15.26 27.08 38.00 38.10 30.88 26.49 14.92 10.02 5.04 18.63 1989 2.54 2.31 7.80 16.44 20.21 35.36 35.91 32.15 27.00 18.78 7.26 4.75 17.54 1990 1.48 2.60 8.85 14.74 25.64 36.02 35.02 34.75 27.47 16.81 11.41 4.53 18.28 1991 2.89 3.94 5.34 15.42 22.32 34.31 36.21 34.04 25.71 15.21 9.31 4.81 17.46 1992 3.02 6.24 6.51 11.56 ****** 31.44 34.30 26.48 21.56 15.02 10.68 2.57 ****** 1993 1.91 2.83 6.51 14.05 22.07 33.73 33.90 30.22 26.17 13.93 8.20 4.82 16.53 1994 4.28 5.79 8.64 15.84 24.48 33.86 35.50 34.18 20.28 13.15 10.21 4.56 17.56 1995 4.21 4.76 7.34 11.87 22.48 33.50 41.09 36.82 26.37 16.26 11.99 2.62 18.28 1996 3.77 4.71 5.17 15.03 24.17 34.90 35.95 34.30 30.60 15.77 8.23 5.40 18.17 1997 4.79 6.35 7.30 13.25 23.62 35.50 41.27 36.49 29.08 18.28 5.57 2.30 18.65 1998 2.11 3.74 7.85 15.12 21.76 31.34 37.78 33.08 27.16 17.19 11.11 7.23 17.96 1999 2.70 6.43 6.41 15.55 26.48 40.03 35.36 35.17 26.30 17.39 6.31 5.69 18.65 2000 4.83 5.31 10.57 24.23 34.87 34.48 34.64 33.70 27.63 14.73 6.87 3.06 19.58 MEAN 3.02 4.07 6.77 12.63 21.55 31.13 32.87 29.89 23.54 14.80 8.48 4.07 16.07 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 30 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 64 61 54 59 44 33 31 30 31 42 57 56 47 1962 60 53 50 54 48 49 52 45 34 52 65 75 53 1963 58 54 61 65 47 31 37 31 28 28 22 56 43 1964 35 49 44 30 23 21 23 25 33 31 41 45 33 1965 64 59 64 52 31 22 23 22 38 42 61 57 45 1966 66 68 65 58 48 39 28 28 34 43 59 67 50 1967 78 78 73 79 63 42 35 43 45 27 39 62 55 1968 77 88 80 66 56 41 39 36 36 47 71 87 60 1969 84 80 63 62 57 48 43 41 36 41 61 58 56 1970 73 55 53 38 28 24 28 31 32 35 38 57 41 1971 61 53 41 42 28 27 33 31 30 43 62 67 43 1972 87 81 79 57 48 30 35 *** 37 44 *** 77 *** 1973 70 59 60 44 30 26 28 36 39 40 48 62 45 1974 82 86 *** *** *** *** 43 49 53 46 47 76 *** 1975 76 80 68 61 51 50 43 *** 44 42 44 70 *** 1976 67 *** *** 69 32 24 25 31 35 60 50 61 *** 1977 79 73 57 52 34 24 21 24 28 51 54 57 46 1978 65 64 55 42 55 43 42 41 26 43 70 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 73 73 63 52 43 39 35 35 42 51 65 65 53 1981 70 70 58 51 41 37 39 37 39 52 51 63 51 1982 *** *** 68 57 50 43 46 55 59 66 81 80 *** 1983 82 74 62 65 46 33 37 38 34 40 40 64 51 1984 65 66 52 36 *** 32 39 40 44 54 *** *** *** 1985 *** 57 63 51 43 34 37 42 32 43 52 75 *** 1986 65 77 75 54 31 27 39 35 31 40 *** 81 *** 1987 *** 64 52 41 30 29 24 25 28 43 40 47 *** 1988 50 55 52 40 26 20 21 25 24 35 40 58 37 1989 67 74 53 32 36 24 26 23 24 26 51 63 42 1990 83 76 48 42 32 25 24 24 23 29 33 58 41 1991 69 61 62 38 30 21 22 18 25 29 39 58 39 1992 65 46 46 46 *** 29 26 31 29 31 33 76 *** 1993 76 76 55 44 34 24 24 25 26 30 48 56 43 1994 57 46 54 38 31 25 26 25 24 38 45 55 39 1995 62 61 53 51 28 24 22 21 24 30 30 72 40 1996 58 62 66 37 27 22 20 18 24 31 41 51 38 1997 55 42 50 41 30 23 19 18 19 33 62 79 39 1998 77 67 56 47 36 25 24 26 24 30 38 46 41 1999 71 57 62 37 24 18 24 22 26 32 57 51 40 2000 53 55 37 23 18 20 22 21 25 38 51 72 36 MEAN 68 65 58 49 38 30 31 31 32 40 50 64 46 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 31 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 75 75 74 72 58 43 38 44 44 57 65 70 60 1962 72 62 59 66 61 61 57 55 46 63 74 85 63 1963 69 66 75 80 60 46 44 38 35 33 30 61 53 1964 47 54 52 37 27 26 33 31 37 36 52 59 41 1965 72 70 70 66 46 28 28 26 45 52 70 67 53 1966 73 76 74 71 60 48 34 35 44 56 73 77 60 1967 84 86 81 85 75 61 41 51 54 36 49 78 65 1968 84 92 86 80 77 56 50 44 49 62 83 90 71 1969 88 88 78 75 67 55 48 47 45 55 75 72 66 1970 87 75 69 53 39 30 37 38 40 45 48 72 53 1971 78 70 55 57 37 35 42 40 39 53 74 78 55 1972 94 91 89 72 65 41 43 *** 47 55 *** 86 *** 1973 82 75 76 62 43 36 37 46 49 55 62 77 58 1974 92 92 *** *** *** *** 49 59 64 55 61 89 *** 1975 89 89 82 73 61 58 50 *** 63 56 56 83 *** 1976 80 *** *** 76 44 31 31 40 50 70 61 72 *** 1977 88 79 65 66 48 34 31 34 41 65 69 70 58 1978 81 78 72 57 67 59 55 54 42 57 84 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 81 83 72 65 58 53 50 49 59 64 76 76 66 1981 80 81 74 64 53 46 46 48 50 63 58 75 62 1982 *** *** 80 68 61 51 56 65 70 76 89 87 *** 1983 90 84 74 81 59 46 49 50 47 55 54 76 64 1984 78 80 73 51 *** 40 46 49 55 68 *** *** *** 1985 *** 70 79 63 55 45 48 54 41 57 71 84 *** 1986 77 89 86 68 47 34 49 46 40 56 *** 90 *** 1987 *** 79 72 61 42 38 34 35 39 59 54 62 *** 1988 70 78 76 59 39 26 29 33 34 48 51 74 51 1989 86 93 78 51 52 31 35 33 33 37 70 83 57 1990 91 90 72 63 43 34 31 33 32 41 44 71 54 1991 89 81 86 60 44 30 29 25 33 38 53 73 53 1992 81 65 72 69 *** 39 33 39 38 43 46 86 *** 1993 88 92 74 64 52 35 36 36 37 42 63 70 57 1994 69 65 74 56 46 34 35 35 32 51 60 74 53 1995 82 80 75 69 42 36 32 32 37 45 41 87 55 1996 82 85 85 57 39 30 28 25 33 44 57 65 53 1997 69 61 69 60 46 34 28 29 27 46 82 91 54 1998 88 85 75 68 51 34 31 35 31 40 50 59 54 1999 85 79 82 58 38 27 34 32 38 45 74 69 55 2000 71 76 56 35 26 28 32 31 36 53 68 86 50 MEAN 80 79 74 64 51 40 39 40 43 52 62 76 58 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 32 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 52 48 38 45 32 24 24 20 21 24 48 42 35 1962 47 44 41 38 34 38 45 36 26 41 55 66 43 1963 46 41 47 52 35 19 31 25 22 23 16 52 34 1964 24 44 38 23 20 18 16 21 29 26 31 32 27 1965 56 46 56 37 17 17 18 18 29 32 51 47 35 1966 58 59 52 40 31 29 22 23 26 28 41 56 39 1967 70 69 60 71 44 23 26 33 33 17 28 41 43 1968 69 83 73 42 24 25 27 25 23 28 53 82 46 1969 79 70 41 48 45 41 38 34 26 28 47 42 45 1970 59 38 40 25 19 19 23 25 25 24 27 41 30 1971 43 37 29 31 20 21 27 25 21 33 49 56 33 1972 79 69 67 44 32 18 26 *** 28 32 *** 66 *** 1973 56 44 42 25 18 16 21 26 30 25 36 48 32 1974 70 80 *** *** *** *** 37 38 42 37 33 63 *** 1975 59 68 54 49 42 43 37 *** 28 31 33 56 *** 1976 56 *** *** 62 23 18 21 25 25 50 40 51 *** 1977 71 66 49 38 23 16 15 16 17 36 40 45 36 1978 48 51 42 29 42 29 33 30 16 27 56 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 66 63 53 40 31 29 26 26 32 40 56 53 43 1981 61 59 46 40 29 29 33 30 29 42 42 54 41 1982 *** *** 58 48 41 36 39 46 49 56 72 72 *** 1983 75 64 50 51 34 25 29 30 24 28 27 50 41 1984 52 53 35 25 *** 27 33 33 36 41 *** *** *** 1985 *** 43 46 39 32 25 28 31 20 28 35 65 *** 1986 50 64 62 38 19 20 30 25 22 27 *** 69 *** 1987 *** 51 36 27 22 23 18 19 22 33 30 36 *** 1988 37 40 35 28 19 16 17 21 17 27 32 48 28 1989 54 60 37 20 26 19 20 17 17 18 38 47 31 1990 73 65 32 29 25 20 20 17 18 20 24 48 33 1991 54 47 45 25 21 16 17 14 20 23 31 45 30 1992 49 33 29 32 *** 22 21 26 24 22 23 66 *** 1993 63 63 41 29 23 17 17 18 18 20 35 43 32 1994 45 34 39 27 22 19 20 19 19 29 34 42 29 1995 47 49 39 37 19 17 16 15 16 21 21 60 30 1996 43 46 53 25 19 16 16 13 18 22 30 38 28 1997 43 30 38 27 20 17 13 12 14 23 47 68 29 1998 65 54 43 32 27 20 20 21 19 22 26 34 32 1999 57 41 47 23 16 13 17 17 18 23 44 36 29 2000 40 41 25 16 13 14 16 15 18 27 39 59 27 MEAN 56 53 45 36 27 22 24 24 24 29 38 52 36 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 33 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. NO. OF DAYS PRECIPITATION EQUAL OR MORE THAN 5 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 1 1 3 5 0 0 0 0 0 0 1 0 11 1962 2 0 2 4 1 0 0 0 0 0 0 0 9 1963 0 2 3 4 3 0 0 0 0 0 0 0 12 1964 0 1 3 0 0 0 0 0 0 0 0 0 4 1965 1 0 0 0 1 0 0 0 0 0 1 0 3 1966 0 2 0 4 2 0 0 0 0 0 0 0 8 1967 0 4 2 5 0 0 0 0 0 0 0 0 11 1968 0 3 0 1 1 0 0 0 0 0 0 1 6 1969 1 1 0 3 0 0 0 0 0 0 1 0 6 1970 3 1 2 1 0 0 0 0 0 0 0 1 8 1971 1 0 1 1 0 0 0 0 0 0 1 1 5 1972 6 1 3 1 1 0 0 0 0 0 *** 1 *** 1973 0 2 2 1 0 0 0 0 0 0 0 1 6 1974 4 2 *** *** *** *** 0 0 0 0 0 2 *** 1975 0 1 0 3 0 0 0 0 0 0 1 0 5 1976 1 *** *** 3 1 0 0 0 0 1 0 2 *** 1977 6 0 1 2 0 0 0 0 0 1 0 1 11 1978 2 3 2 2 0 0 0 0 0 0 1 *** *** 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 2 2 3 1 0 0 0 0 0 0 0 1 9 1981 2 4 1 2 2 0 1 0 0 0 0 1 13 1982 2 5 7 1 0 0 0 0 0 0 2 3 20 1983 2 2 2 7 0 0 0 0 0 0 0 1 14 1984 2 0 4 1 *** 0 0 0 0 0 *** *** *** 1985 *** 0 2 0 0 0 0 0 0 0 0 3 *** 1986 0 3 5 2 0 0 0 0 0 0 1 3 14 1987 *** 1 3 3 1 0 0 0 0 1 0 1 *** 1988 0 3 7 2 0 0 1 0 0 0 0 1 14 1989 0 2 1 1 2 0 0 0 0 0 2 1 9 1990 6 4 1 1 0 0 0 0 0 0 0 2 14 1991 0 4 6 2 0 0 0 0 0 0 0 3 15 1992 1 1 2 1 *** 0 0 0 0 0 0 2 *** 1993 3 6 2 2 0 0 0 0 0 0 0 0 13 1994 1 0 3 1 1 0 0 0 0 0 1 0 7 1995 1 1 3 4 0 0 0 0 0 0 0 0 9 1996 0 2 3 1 1 0 0 0 0 0 0 1 8 1997 2 0 1 1 1 0 0 0 0 1 3 4 13 1998 3 5 2 3 1 0 0 0 0 0 0 0 14 1999 3 2 6 2 0 0 0 0 0 0 1 0 14 2000 1 1 0 0 0 0 0 0 0 1 1 2 6 MEAN 2 2 2 2 1 0 0 0 0 0 0 1 10 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 34 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. HIGHEST AND LOWEST LIMITS FOR 40 YEARS DURING 1961-2000 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. HIG. DRY 03 12.4 18.8 24.6 28.0 32.5 32.3 36.4 39.0 29.0 29.0 27.0 19.0 1 YEAR - DAY 1992- 3 1992-25 1998-30 1970-20 1973-31 1977-21 1991-11 1976-10 1964- 4 1973-10 1963- 8 1994- 4 LOW. DRY 03 -13.0 -15.4 -6.0 -0.4 3.2 15.0 16.0 11.2 7.2 -1.0 -5.0 -12.0 2 YEAR - DAY 1964- 5 1972- 1 1975- 6 1994- 6 1989- 2 1967- 6 1978-10 1996-31 1991-28 1995-20 1962-23 1982- 9 HIG. WET 03 10.0 14.4 18.1 20.4 22.0 27.0 29.0 29.0 22.0 17.3 15.0 12.0 3 YEAR - DAY 1961-22 1971-14 1975-26 1963-29 1975-31 1975-16 1975- 5 1975-12 1974- 4 1963- 4 1963- 8 1994- 4 LOW. WET 03 -14.0 -16.0 -6.0 -2.0 0.6 8.4 10.0 4.0 3.0 -4.8 -7.0 -13.0 4 YEAR - DAY 1964- 5 1972- 1 1961- 5 1996- 6 1989- 2 2000-15 1988-23 1996-31 1989-24 1995-20 1962-25 1982- 9 HIG. DRY 09 20.4 24.0 31.0 35.0 39.2 43.0 44.0 40.4 38.6 37.3 32.0 25.0 5 YEAR - DAY 1971- 7 1992-25 1971-15 1981-23 1970-17 1980-10 1983-29 1970- 6 1996- 9 1966- 1 1963- 8 1987-24 LOW. DRY 09 -4.6 -12.4 1.2 5.4 12.4 23.4 24.4 20.2 17.2 6.4 1.0 -5.0 6 YEAR - DAY 1992-27 1972- 1 1985- 3 1996- 4 1989- 1 2000-14 1987-27 1972-12 1991-27 1987-28 1962-22 1986-11 HIG. WET 09 16.4 18.0 25.0 27.5 31.0 32.0 35.0 32.0 29.8 27.0 20.2 16.6 7 YEAR - DAY 1963-18 1975-22 1977-24 1976-22 1962-31 1975-14 1975- 4 1974-13 1974-21 1973-11 1973- 1 1968- 9 LOW. WET 09 -6.0 -13.0 -2.0 2.0 5.2 12.2 14.6 11.8 9.2 4.0 -1.0 -6.2 8 YEAR - DAY 1964- 5 1972- 1 1985- 3 1996- 5 1989- 1 1972-20 1988-24 1996-30 1969-14 1977-28 1962-22 1986-11 HIG. DRY 15 16.0 22.0 27.0 33.0 36.8 40.0 43.0 38.2 35.8 30.0 30.0 18.6 9 YEAR - DAY 1966-31 1985-26 1977-24 1994-26 2000-27 1980- 9 1978- 2 1994- 2 1997- 3 1963-10 1963- 8 1967- 8 LOW. DRY 15 -15.0 -11.2 0.0 4.0 11.0 18.6 20.8 19.0 13.2 3.0 -3.0 -9.0 10 YEAR - DAY 1972-31 1972- 4 1963-26 1981- 2 1978- 3 1971- 7 1968-13 1962-30 1986-30 1977-26 1976-19 1986-11 HIG. WET 15 10.0 12.6 23.0 24.8 26.0 29.0 29.0 29.5 24.0 21.0 17.0 15.6 11 YEAR - DAY 1966-31 1985-26 1977-21 1989-20 1975-18 1975-14 1974-12 1975-12 1974- 4 1975- 8 1974- 6 1989- 3 LOW. WET 15 -15.0 -11.2 -2.4 1.4 5.8 11.0 12.0 10.2 5.0 2.0 -6.0 -10.0 12 YEAR - DAY 1972-31 1972- 3 1992-12 1996- 5 1989- 1 1970-11 1972- 9 1972-25 1969-15 1977-26 1976-18 1986-12 HIG. MIN. 7.6 15.6 18.6 24.6 25.6 28.4 29.4 26.6 25.0 20.4 17.6 12.4 13 YEAR - DAY 1996- 7 1992-25 2000-25 1990-30 1999-21 1994-23 1991- 9 1990-12 1997- 4 1995-13 1987- 8 1989- 5 LOW. MIN. -20.0 -20.0 -10.0 -3.0 2.4 6.0 8.0 7.0 2.0 -6.0 -9.0 -19.0 14 YEAR - DAY 1964- 4 1972- 1 1961- 5 1967- 2 1989- 2 1964- 9 1977-17 1977-31 1977- 8 1977-26 1977-29 1964-30 HIG. MAX. 21.0 25.5 35.0 37.0 40.2 46.0 47.0 42.0 40.6 38.0 39.0 25.6 15 YEAR - DAY 1966-31 1985-26 1977-24 1978-24 2000-27 1980-10 1975-12 1974-23 1996- 9 1963-12 1963- 8 1987-24 LOW. MAX. -5.0 -9.0 1.5 10.2 14.0 25.6 29.5 25.6 18.0 7.2 2.0 -5.0 16 YEAR - DAY 1972-31 1972- 2 1986-13 1994- 5 1989- 1 2000-13 1970-18 1992-31 1991-28 1987-28 1962-23 1986-11 HIG. PPTN 24.5 36.0 28.0 46.8 40.0 4.0 8.0 0.4 3.0 13.0 25.2 30.5 17 YEAR - DAY 1969-11 1981-12 1962-16 1995-25 1963-11 1993- 4 1988-11 1998- 8 1995-22 1987-27 1969- 4 1977-24 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 35 STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. HIGHEST LIMITS OF ABSOLUTE DIFFERENCES FOR 40 YEARS DURING 1961-2000 ELE- JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MENT --------------------------------------------------------------------------------------------- NO. DRY 09 - DRY 03 19.2 18.2 19.2 22.2 21.4 18.6 18.2 20.0 22.0 20.8 18.4 24.0 18 YEAR - DAY 1968- 2 1973- 5 1965- 8 1968-18 1968-22 1968- 1 1978-16 1962-22 1983-26 1968-12 1971- 4 1973- 4 DRY 15 - DRY 09 15.0 13.0 16.8 17.8 18.8 14.3 16.0 13.2 12.6 16.8 16.2 19.0 19 YEAR - DAY 1961- 8 1965-18 1971-21 1968-20 1968-22 1967- 1 1973-19 1962-21 1967-27 1968-27 1968-11 1973- 4 DRY 15 - DRY 03 12.4 16.4 16.4 18.0 17.0 15.0 20.0 17.8 17.6 15.0 14.0 15.0 20 YEAR - DAY 1995-29 1992-23 1990-24 1994-10 1980-14 1980- 7 1978- 2 1997-15 1989-11 1975- 2 1975-10 1972-30 WET 09 - WET 03 16.0 18.0 23.0 19.4 16.6 13.4 14.1 15.0 14.8 18.0 19.0 17.0 21 YEAR - DAY 1968- 1 1977-19 1975-25 1989-26 1986- 7 1969- 9 1972-19 1962-23 1974-21 1973-14 1973-14 1967-24 WET 15 - WET 09 14.0 13.2 11.6 15.0 13.0 11.0 14.4 12.8 10.8 16.0 12.8 14.0 22 YEAR - DAY 1961- 8 1971-14 1986- 3 1989-26 1978- 1 1962-18 1962-16 1962-23 1974-21 1973-14 1968-11 1967-25 WET 15 - WET 03 12.0 13.3 22.1 16.8 11.0 9.2 12.2 10.9 10.2 15.0 10.1 14.2 23 YEAR - DAY 1968- 5 1974- 6 1975-25 1989-20 1975-19 1969- 9 1978-25 1978-14 1969-16 1975-25 1964- 7 1972-30 DAY BY DAY DRY 03 12.6 17.2 14.4 12.8 13.8 10.0 12.4 11.0 11.0 15.0 21.0 15.2 24 YEAR - DAY 1990-27 1971-15 1997- 9 1995- 7 1997- 6 1978-24 1991-12 1976-10 1995-22 1973-10 1993-15 1994- 4 DAY BY DAY WET 03 12.6 17.6 19.1 10.0 8.1 7.8 8.0 10.0 8.8 10.0 15.8 11.0 25 YEAR - DAY 1990-27 1971-15 1975-26 1977-17 1965- 1 1975-22 1972- 6 1975-12 1978-22 1977-24 1993-15 1965-20 DAY BY DAY DRY 09 14.8 20.0 16.0 17.2 12.4 9.0 9.6 11.6 13.8 16.4 17.2 12.6 26 YEAR - DAY 1999- 2 1984-15 1969-24 1989-30 1985-18 1961- 8 1970-19 1967-10 1995-22 1987-27 1993-15 1985- 9 DAY BY DAY WET 09 11.0 10.0 10.9 13.8 12.0 11.0 11.0 12.0 11.7 11.0 11.0 13.2 27 YEAR - DAY 1974-31 1984-15 1964- 9 1989-26 1975-18 1980- 9 1964-15 1974- 6 1974-21 1973-12 1993-15 1985- 6 DAY BY DAY DRY 15 15.6 15.2 14.6 19.8 17.4 11.4 12.8 10.0 15.6 15.8 12.4 12.0 28 YEAR - DAY 1990-26 1985-27 1971-16 1971-26 1997- 5 1971- 7 1991-21 1974- 2 1986-30 1968-27 1988-15 1972-29 DAY BY DAY WET 15 12.6 9.3 10.0 13.2 10.0 10.2 12.3 7.7 9.8 12.0 9.8 12.1 29 YEAR - DAY 1990-26 1974- 6 1972- 7 1989-20 1973- 2 1978-28 1972-24 1973- 7 1986-30 1975-20 1968-11 1972-29 DAY BY DAY MIN. 15.6 12.0 17.0 12.0 11.0 8.8 9.0 9.0 10.0 11.2 12.0 11.0 30 YEAR - DAY 1965- 1 1964- 1 1975-26 1987-21 1990-14 1993-23 1974-18 1974-22 1974- 5 1987-27 1973-26 1964- 1 DAY BY DAY MAX. 13.0 11.2 13.0 14.0 13.0 10.0 9.0 9.0 14.5 18.0 16.2 12.0 31 YEAR - DAY 1986-21 1993- 6 1972-11 1972-25 1972- 4 1961- 8 1975-12 1978-27 1969-12 1977-24 1993-15 1985- 9 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.1 4.8 10.3 14.7 23.1 26.6 28.1 25.0 21.9 16.5 7.4 8.4 15.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.0 -2.7 2.1 7.5 14.4 17.5 19.6 16.2 13.3 7.9 -0.4 0.4 7.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.2 12.3 18.6 21.8 31.9 35.7 36.6 33.8 30.4 25.1 15.1 16.5 24.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.2 15.0 16.5 14.3 17.5 18.2 17.0 17.6 17.1 17.2 15.5 16.1 16.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.91 2.96 4.63 6.46 9.17 8.31 9.08 7.96 6.24 4.71 3.09 3.62 5.76 MEAN OF MIXING RATIO AT 09 GMT. 4.63 4.39 5.11 7.92 10.19 10.56 12.38 8.44 6.35 4.74 5.98 5.20 7.16 MEAN OF MIXING RATIO AT 15 GMT. 3.16 3.99 5.08 6.76 8.92 8.83 8.70 6.11 5.51 5.87 4.11 4.05 5.92 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -11.0 -10.0 1.0 10.5 12.5 15.0 12.0 10.0 -2.0 -3.5 -2.0 -11.0 DAY 11 2 5 5 3 9 3 30 29 31 9 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 17.5 26.0 32.5 38.0 40.0 42.5 37.0 35.5 30.5 17.0 21.0 42.5 DAY 21 25 26 29 28 6 12 1 23 4 5 4 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.5 5.0 9.0 20.5 1.0 2.0 0.0 0.0 0.0 0.0 11.0 1.0 20.5 DAY 22 3 22 7 1 7 ** ** ** ** 23 16 MONTHLY TOTAL PRECIPITATION IN MM. 10.0 5.0 31.0 55.5 1.0 2.0 0.0 0.0 0.0 0.0 11.0 1.0 116.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 39.5 50.2 0.0 10.3 NO. OF DAYS WITH PRECIPITATION. 5 2 7 8 1 1 0 0 0 0 1 1 26 NO. OF DAYS PRECIPITATION EQUAL 3 1 6 6 1 1 0 0 0 0 1 1 20 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 3 0 0 0 0 0 0 1 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 67 70 70 57 40 37 44 42 49 58 67 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 59 53 40 51 33 28 30 24 24 25 52 44 39 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 63 63 52 55 42 31 25 22 28 51 59 56 46 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 20 9 3 0 0 0 0 0 0 0 0 0 32 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 9 1 0 0 0 0 13 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 4 27 29 31 31 16 5 0 0 143 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 1 0 0 0 0 0 3 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 27 21 11 0 0 0 0 0 0 3 21 17 100 DATE OF START AND END FREEZING START = 27 OCT. END = 20 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.3 10.1 13.2 17.3 23.4 24.9 27.7 23.8 20.2 18.7 3.4 3.0 15.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.2 3.3 5.8 10.1 15.1 16.8 18.9 13.7 11.1 10.4 -3.1 -3.9 8.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.9 16.9 20.6 24.6 31.8 33.1 36.4 34.0 29.3 27.1 10.0 9.8 23.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.1 13.6 14.8 14.5 16.7 16.3 17.5 20.3 18.2 16.7 13.1 13.7 15.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.11 3.94 4.29 6.07 8.99 9.72 11.73 7.65 6.47 6.40 2.98 3.05 6.20 MEAN OF MIXING RATIO AT 09 GMT. 4.90 6.07 6.86 7.94 17.59 20.64 20.60 14.23 6.79 9.69 4.41 5.22 10.41 MEAN OF MIXING RATIO AT 15 GMT. 4.01 4.13 5.45 7.46 7.81 9.50 14.03 8.13 6.82 8.50 4.17 4.97 7.08 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.0 -3.5 -2.0 7.0 9.0 14.5 15.0 11.5 7.5 2.0 -8.0 -9.0 -9.0 DAY 18 26 1 19 1 3 28 17 6 30 24 23 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 20.0 29.0 28.5 38.5 36.5 39.0 38.0 32.5 33.5 17.0 14.0 39.0 DAY 28 8 25 1 31 12 5 21 16 9 1 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.0 0.0 28.0 24.0 8.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28.0 DAY 9 ** 16 7 11 ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. 13.5 0.0 35.0 58.0 8.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 114.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 42.4 57.6 0.0 0.0 NO. OF DAYS WITH PRECIPITATION. 3 0 3 4 1 0 0 0 0 0 0 0 11 NO. OF DAYS PRECIPITATION EQUAL 3 0 3 4 1 0 0 0 0 0 0 0 11 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 2 0 0 0 0 0 0 0 0 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 65 61 54 58 56 49 54 55 45 60 72 82 59 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 50 47 43 39 53 60 50 39 26 42 57 66 48 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 64 51 54 65 35 39 51 40 32 53 64 78 52 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 7 0 0 0 0 0 0 0 0 0 11 17 35 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 6 0 0 0 0 0 7 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 21 27 31 31 17 13 0 0 140 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 26 2 1 0 0 0 0 0 0 0 27 31 87 DATE OF START AND END FREEZING START = 3 NOV. END = 1 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 10.0 10.0 10.3 14.1 20.8 26.6 28.1 25.6 24.2 22.1 19.7 8.9 18.4 AVERAGE OF MINIMUM TEMPERATURE IN C. 3.0 3.3 2.8 7.0 15.3 16.9 19.1 15.5 13.3 11.4 8.2 2.0 9.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 16.9 16.8 17.8 21.3 26.3 36.3 37.1 35.8 35.0 32.8 31.2 15.7 26.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.9 13.6 15.0 14.3 11.0 19.4 18.0 20.3 21.7 21.4 23.0 13.7 17.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.33 4.15 4.80 7.53 8.88 10.80 12.61 9.14 7.30 6.32 4.09 4.08 7.00 MEAN OF MIXING RATIO AT 09 GMT. 6.29 5.78 6.36 8.77 7.69 8.93 12.98 9.09 7.19 6.85 4.22 4.32 7.37 MEAN OF MIXING RATIO AT 15 GMT. 4.57 4.19 6.31 8.28 7.92 6.84 12.21 8.27 7.06 6.38 3.79 4.22 6.67 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -2.5 -3.5 -6.5 2.0 12.0 7.0 16.0 12.0 9.0 7.0 3.0 -6.0 -6.5 DAY 29 26 31 3 13 16 1 23 11 26 20 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 20.0 25.0 31.0 35.0 40.0 40.0 39.0 38.5 38.0 39.0 24.5 40.0 DAY 11 8 13 28 29 11 7 18 28 12 8 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 0.0 6.0 14.0 24.0 40.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 40.0 DAY ** 13 3 7 11 ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. 0.0 11.0 31.5 53.0 64.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 160.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 26.6 73.4 0.0 0.0 NO. OF DAYS WITH PRECIPITATION. 0 2 3 7 8 0 0 0 0 0 0 0 20 NO. OF DAYS PRECIPITATION EQUAL 0 2 3 7 8 0 0 0 0 0 0 0 20 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 2 1 1 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 65 73 79 58 45 43 38 33 32 26 58 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 48 45 49 54 35 23 31 26 23 24 20 54 36 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 57 53 62 63 49 24 37 29 29 28 20 58 42 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 3 0 0 0 0 0 0 0 0 2 5 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 6 7 0 0 0 0 0 13 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 2 7 30 31 31 30 30 18 0 179 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 1 0 0 0 0 0 3 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 2 2 6 0 0 0 0 0 0 0 0 6 16 DATE OF START AND END FREEZING START = 26 DEC. END = 31 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -0.2 7.6 12.7 15.8 20.7 23.3 25.2 25.2 23.5 16.3 10.2 -1.3 14.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -12.0 -1.1 4.9 5.3 8.3 10.5 12.4 12.7 12.5 6.2 -0.6 -12.5 3.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.6 16.4 20.4 26.3 33.2 36.0 37.9 37.6 34.4 26.3 21.1 9.9 25.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 23.6 17.5 15.5 21.0 24.9 25.5 25.5 24.9 21.9 20.1 21.7 22.4 22.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.08 2.71 3.96 3.93 6.28 6.78 7.99 8.24 7.50 4.50 3.22 1.69 4.82 MEAN OF MIXING RATIO AT 09 GMT. 2.50 4.38 6.91 5.62 6.70 6.62 7.80 8.84 9.69 5.72 5.06 2.99 6.07 MEAN OF MIXING RATIO AT 15 GMT. 1.41 3.27 5.21 4.72 6.41 6.20 6.96 8.47 8.88 5.26 5.11 2.14 5.34 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -20.0 -8.0 0.0 1.0 4.0 6.0 9.0 8.0 8.0 -3.0 -4.0 -19.0 -20.0 DAY 4 14 1 16 3 9 5 31 19 29 3 30 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.5 24.0 27.5 32.5 36.0 39.5 43.0 40.0 39.0 35.0 28.0 17.5 43.0 DAY 28 25 31 30 11 16 13 3 1 1 13 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 0.0 30.0 27.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 30.0 DAY ** 15 22 1 ** ** ** ** ** ** ** 18 MONTHLY TOTAL PRECIPITATION IN MM. 0.0 43.0 51.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 101.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 93.1 4.0 0.0 3.0 NO. OF DAYS WITH PRECIPITATION. 0 5 3 1 0 0 0 0 0 0 0 1 10 NO. OF DAYS PRECIPITATION EQUAL 0 5 3 1 0 0 0 0 0 0 0 1 10 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 0 0 0 0 0 0 0 0 0 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 29 47 40 30 26 26 31 30 35 32 43 45 35 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 44 51 49 30 21 18 19 21 31 28 34 45 33 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 32 50 44 29 23 19 19 24 33 32 46 44 33 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 3 0 0 0 0 0 0 0 0 5 31 70 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 2 27 30 31 31 29 7 0 0 157 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 3 0 0 0 0 6 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 20 2 0 0 0 0 0 0 5 21 31 110 DATE OF START AND END FREEZING START = 27 OCT. END = 22 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.9 6.1 10.3 14.3 22.3 25.7 28.4 26.2 23.7 22.2 14.9 9.1 17.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.2 -4.0 0.2 3.3 11.8 15.2 18.6 15.9 13.7 12.0 5.4 2.5 7.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.1 16.2 20.5 25.3 32.9 36.1 38.1 36.5 33.6 32.3 24.3 15.6 26.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.3 20.2 20.3 22.1 21.1 20.9 19.5 20.6 19.9 20.3 18.9 13.1 19.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.16 3.44 4.05 4.66 6.64 5.91 7.21 5.96 7.94 8.09 6.05 4.02 5.59 MEAN OF MIXING RATIO AT 09 GMT. 4.88 4.80 9.05 6.78 5.82 6.22 8.26 7.15 9.83 9.55 8.28 6.00 7.22 MEAN OF MIXING RATIO AT 15 GMT. 4.05 4.17 6.17 5.59 6.29 5.58 7.42 7.03 9.38 8.71 7.73 5.28 6.45 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.0 -9.0 -4.0 -1.0 7.0 12.0 14.5 14.5 12.0 8.0 3.0 -2.0 -9.0 DAY 13 4 16 7 12 2 27 14 30 27 13 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.5 22.5 27.0 31.5 38.5 39.5 43.0 38.5 37.0 34.5 31.0 23.0 43.0 DAY 11 9 8 29 29 1 14 17 14 10 8 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.0 0.0 0.0 1.0 10.5 0.0 0.0 0.0 0.0 0.5 5.0 3.0 10.5 DAY 14 ** ** 14 19 ** ** ** ** 13 23 29 MONTHLY TOTAL PRECIPITATION IN MM. 20.5 0.0 0.0 1.0 10.5 0.0 0.0 0.0 0.0 0.5 8.0 4.0 44.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 46.1 25.8 0.0 28.1 NO. OF DAYS WITH PRECIPITATION. 8 0 0 1 1 0 0 0 0 1 2 2 15 NO. OF DAYS PRECIPITATION EQUAL 8 0 0 1 1 0 0 0 0 0 2 2 14 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 1 0 0 0 0 0 0 0 1 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 65 68 68 65 46 28 27 24 41 51 65 54 50 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 63 47 58 37 18 17 19 19 31 33 51 54 37 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 65 60 65 55 30 20 22 24 41 42 67 65 46 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 11 16 1 0 0 0 0 0 0 0 0 0 28 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 5 0 0 0 0 0 5 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 3 26 30 31 31 30 29 3 0 183 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 9 0 0 0 0 0 9 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 27 12 1 0 0 0 0 0 0 0 6 77 DATE OF START AND END FREEZING START = 22 DEC. END = 7 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 7.1 9.5 10.3 14.7 20.1 25.3 26.8 26.5 23.6 20.2 12.8 4.3 16.8 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.9 1.7 2.9 5.9 11.1 13.0 15.0 15.8 13.8 10.1 2.7 -5.6 7.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.2 17.3 17.7 23.5 29.1 37.5 38.6 37.1 33.4 30.3 22.8 14.2 26.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.3 15.6 14.8 17.6 18.0 24.5 23.6 21.3 19.6 20.2 20.1 19.8 18.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.05 5.07 4.99 6.47 7.66 8.82 8.23 8.69 8.33 8.04 6.51 3.80 6.72 MEAN OF MIXING RATIO AT 09 GMT. 5.87 6.51 6.31 6.86 8.02 11.86 9.58 9.62 8.69 7.67 7.21 6.45 7.89 MEAN OF MIXING RATIO AT 15 GMT. 5.00 5.77 5.85 7.70 8.95 10.82 9.15 8.49 8.37 8.49 8.32 6.03 7.75 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -2.0 -2.0 -2.0 2.0 7.5 11.5 12.0 14.5 13.0 6.0 -8.0 -11.0 -11.0 DAY 3 8 3 6 10 4 4 7 4 17 24 30 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 21.0 21.0 23.5 31.0 34.0 41.0 42.0 41.5 38.5 38.0 33.0 17.5 42.0 DAY 31 10 9 20 30 15 6 29 1 1 1 14 24 HOUR MAXIMUM PRECIPITATION IN MM. 1.5 9.5 4.5 30.0 5.0 0.0 0.0 0.0 0.0 4.5 0.0 2.0 30.0 DAY 12 19 30 4 7 ** ** ** ** 27 ** 20 MONTHLY TOTAL PRECIPITATION IN MM. 3.0 24.5 17.5 56.0 10.0 0.0 0.0 0.0 0.0 7.5 0.0 5.0 123.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 36.4 53.4 0.0 10.1 NO. OF DAYS WITH PRECIPITATION. 2 8 7 9 2 0 0 0 0 5 0 3 36 NO. OF DAYS PRECIPITATION EQUAL 2 6 6 8 2 0 0 0 0 2 0 3 29 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 1 0 0 0 0 0 0 0 0 1 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 75 73 68 58 46 34 35 43 54 66 62 57 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 62 59 53 40 31 29 22 23 27 29 43 64 40 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 69 70 70 67 55 42 28 26 34 45 69 76 54 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 8 24 32 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 1 10 30 31 31 28 17 2 0 150 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 5 5 2 0 0 0 0 12 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 5 3 2 0 0 0 0 0 0 0 8 31 49 DATE OF START AND END FREEZING START = 23 NOV. END = 6 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.0 3.5 9.9 11.8 20.8 26.6 27.4 27.1 25.7 19.8 16.3 8.9 16.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -6.3 -5.3 3.7 6.3 13.5 16.1 17.5 17.1 16.0 9.5 6.6 -2.5 7.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.3 12.2 16.2 17.4 28.1 37.1 37.4 37.0 35.5 30.0 25.9 20.3 25.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 20.6 17.5 12.5 11.1 14.6 21.0 19.9 19.9 19.5 20.5 19.3 22.8 18.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.41 4.18 5.37 6.57 9.27 10.00 9.70 10.59 10.58 5.15 4.72 4.71 7.10 MEAN OF MIXING RATIO AT 09 GMT. 7.39 6.67 7.03 8.91 9.35 9.21 10.74 13.28 12.56 4.80 5.54 6.41 8.49 MEAN OF MIXING RATIO AT 15 GMT. 6.50 5.88 6.99 7.85 9.49 9.76 10.98 11.54 11.13 5.54 6.23 6.12 8.17 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.5 -14.0 -3.0 -3.0 9.0 14.0 16.5 14.5 12.0 6.0 1.0 -10.0 -14.0 DAY 23 4 31 2 1 6 4 18 28 23 30 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.8 16.5 21.5 22.0 39.5 41.0 41.0 39.5 38.0 33.5 31.0 25.0 41.0 DAY 15 2 7 22 29 24 9 15 2 11 3 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.0 26.5 12.5 14.5 4.5 0.0 0.0 0.0 0.0 0.0 3.0 0.0 26.5 DAY 23 13 31 15 1 ** ** ** ** ** 20 ** MONTHLY TOTAL PRECIPITATION IN MM. 9.0 75.5 22.0 62.5 8.0 0.0 0.0 0.0 0.0 0.0 6.5 0.0 183.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 58.0 38.4 0.0 3.5 NO. OF DAYS WITH PRECIPITATION. 4 7 2 13 4 0 0 0 0 0 3 0 33 NO. OF DAYS PRECIPITATION EQUAL 3 7 2 12 2 0 0 0 0 0 3 0 29 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 3 1 4 0 0 0 0 0 0 0 0 8 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 80 77 78 81 74 61 41 49 53 34 44 75 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 72 75 61 75 44 23 26 34 33 18 28 43 44 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 81 82 79 80 70 43 38 45 48 30 46 67 59 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 26 18 0 0 0 0 0 0 0 0 0 10 54 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 11 30 31 31 30 17 1 0 151 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 4 2 0 0 0 0 0 6 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 23 1 3 0 0 0 0 0 0 0 26 84 DATE OF START AND END FREEZING START = 1 DEC. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.5 3.9 9.1 15.8 20.8 25.7 26.5 27.0 23.8 18.4 14.4 9.1 16.7 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.9 -2.8 3.2 6.6 10.0 14.5 15.6 16.4 12.0 7.0 6.1 2.2 7.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.8 10.7 15.0 25.0 31.6 36.9 37.3 37.6 35.6 29.8 22.6 15.9 26.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 16.7 13.5 11.8 18.4 21.6 22.4 21.7 21.2 23.6 22.8 16.5 13.7 18.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.02 3.81 5.12 6.12 7.64 9.70 10.38 9.95 8.02 6.02 6.69 5.66 6.93 MEAN OF MIXING RATIO AT 09 GMT. 7.42 7.05 8.02 7.66 7.24 10.04 10.79 10.18 8.53 7.52 9.05 9.86 8.61 MEAN OF MIXING RATIO AT 15 GMT. 6.16 6.11 7.36 8.42 8.96 9.87 11.18 10.92 9.18 8.19 9.13 7.76 8.60 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.5 -8.0 2.0 4.5 8.5 11.0 12.0 14.0 8.5 3.5 4.0 -3.0 -8.0 DAY 4 6 1 3 6 1 14 30 20 11 12 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 19.0 15.5 20.0 33.5 37.5 40.0 43.5 40.5 40.0 35.0 28.0 19.0 43.5 DAY 11 29 2 21 28 19 1 15 10 1 6 4 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.0 13.5 3.5 11.5 6.0 0.0 0.0 0.0 0.0 1.0 4.5 11.0 13.5 DAY 26 23 9 29 18 ** ** ** ** 27 8 9 MONTHLY TOTAL PRECIPITATION IN MM. 11.0 37.5 13.0 20.0 7.5 0.0 0.0 0.0 0.0 1.5 9.2 22.5 122.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 50.3 22.5 0.0 27.2 NO. OF DAYS WITH PRECIPITATION. 5 9 6 4 2 0 0 0 0 2 7 10 45 NO. OF DAYS PRECIPITATION EQUAL 4 7 5 4 2 0 0 0 0 1 2 6 31 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 0 1 0 0 0 0 0 0 0 1 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 90 83 76 75 56 49 44 48 60 80 88 69 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 71 85 73 42 24 25 27 25 23 28 53 84 47 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 79 88 84 79 69 41 42 38 38 53 81 88 65 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 10 8 0 0 0 0 0 0 0 0 0 0 18 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 9 18 30 31 31 30 13 0 0 162 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 4 1 1 0 0 0 8 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 29 27 0 0 0 0 0 0 0 0 0 7 63 DATE OF START AND END FREEZING START = 3 DEC. END = 27 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.3 5.3 13.4 15.6 22.9 26.6 28.0 26.9 22.8 19.5 8.1 7.3 16.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.3 -1.8 4.1 6.9 14.2 17.5 18.3 17.6 13.8 10.8 1.4 0.0 8.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.9 12.4 22.7 24.3 31.7 35.7 37.7 36.2 31.8 28.2 14.9 14.6 24.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.2 14.2 18.6 17.4 17.5 18.2 19.4 18.6 18.0 17.4 13.5 14.6 16.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.91 4.53 5.56 6.19 10.21 10.49 9.95 9.42 6.59 5.46 4.37 3.60 6.69 MEAN OF MIXING RATIO AT 09 GMT. 5.26 6.26 6.59 8.12 13.81 16.13 15.76 12.99 8.51 6.64 5.30 4.55 9.16 MEAN OF MIXING RATIO AT 15 GMT. 4.54 5.25 7.28 6.91 11.35 13.67 12.58 11.03 8.27 6.80 5.05 4.33 8.09 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.0 -4.5 -0.5 2.5 7.0 12.0 15.8 15.5 4.0 5.0 -5.5 -5.0 -8.0 DAY 7 13 2 15 2 9 16 5 15 15 24 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 16.5 30.5 34.0 40.0 40.5 41.0 38.5 38.0 34.0 25.0 18.5 41.0 DAY 2 19 20 30 27 25 25 21 11 7 2 23 24 HOUR MAXIMUM PRECIPITATION IN MM. 24.5 9.0 3.5 19.5 3.0 0.0 0.0 0.0 0.0 4.0 25.2 1.1 25.2 DAY 11 22 16 9 17 ** ** ** ** 31 4 3 MONTHLY TOTAL PRECIPITATION IN MM. 32.5 18.0 5.0 49.5 6.5 0.0 0.0 0.0 0.0 4.6 28.3 1.1 145.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 38.1 38.5 0.0 23.4 NO. OF DAYS WITH PRECIPITATION. 4 5 3 5 5 0 0 0 0 4 4 2 32 NO. OF DAYS PRECIPITATION EQUAL 4 5 2 5 3 0 0 0 0 1 2 1 23 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 0 3 0 0 0 0 0 0 1 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 84 86 74 72 65 52 46 45 44 53 74 70 64 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 81 71 42 53 47 43 38 34 28 29 47 43 46 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 86 83 74 61 60 48 44 45 35 43 64 61 59 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 9 2 0 0 0 0 0 0 0 0 5 2 18 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 1 0 0 0 1 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 2 3 22 24 31 31 24 10 0 0 147 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 3 2 0 0 0 0 0 6 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 25 1 0 0 0 0 0 0 0 17 15 89 DATE OF START AND END FREEZING START = 13 NOV. END = 2 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.8 8.0 10.5 19.2 25.2 27.7 27.9 ***** ***** 18.1 13.3 5.9 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -2.1 0.4 3.7 11.1 16.8 19.6 20.4 ***** ***** 8.9 4.5 -1.1 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.7 15.5 17.3 27.2 33.6 35.8 35.8 37.4 30.6 27.3 22.1 13.0 25.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.8 15.1 13.6 16.1 16.8 16.2 15.4 ***** ***** 18.4 17.6 14.1 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.83 3.92 4.38 5.92 7.01 6.74 8.37 8.61 5.37 4.12 3.18 3.23 5.39 MEAN OF MIXING RATIO AT 09 GMT. 4.67 4.39 4.97 5.89 6.60 7.43 8.57 10.88 7.13 5.83 4.86 3.94 6.26 MEAN OF MIXING RATIO AT 15 GMT. 4.41 4.26 4.93 6.02 6.67 6.96 8.20 9.76 6.60 5.46 3.95 3.70 5.91 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.5 -5.5 -3.0 6.0 11.5 12.5 16.5 ***** ***** 0.0 -0.5 -5.5 ****** DAY 30 1 15 14 10 12 19 ** ** 24 16 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 21.0 28.5 34.5 40.0 40.5 41.0 41.5 36.5 35.0 27.5 19.5 41.5 DAY 1 19 31 8 17 21 1 6 8 8 9 8 24 HOUR MAXIMUM PRECIPITATION IN MM. 18.1 8.0 14.8 17.6 1.8 0.0 0.0 0.0 0.0 0.0 0.0 6.5 18.1 DAY 2 17 7 24 5 ** ** ** ** ** ** 23 MONTHLY TOTAL PRECIPITATION IN MM. 34.5 8.0 23.4 18.9 1.8 0.0 0.0 0.0 0.0 0.0 0.0 9.5 96.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 68.6 21.5 0.0 9.9 NO. OF DAYS WITH PRECIPITATION. 6 2 5 3 1 0 0 0 0 0 0 3 20 NO. OF DAYS PRECIPITATION EQUAL 3 1 4 2 1 0 0 0 0 0 0 2 13 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 1 1 0 0 0 0 0 0 0 0 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 86 75 67 52 38 30 37 38 40 44 47 72 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 60 38 42 26 20 19 23 26 25 24 27 41 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 74 52 50 35 25 22 25 29 32 36 38 58 40 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 1 0 0 0 0 0 *** *** 0 0 7 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 4 15 11 *** *** 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 11 25 28 30 31 19 11 0 0 155 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 6 1 6 0 0 0 0 14 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 28 12 4 0 0 0 0 *** *** 1 2 19 *** DATE OF START AND END FREEZING START = 24 OCT. END = 15 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.3 6.5 13.8 17.5 25.0 28.2 27.9 26.9 21.3 ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -3.9 -1.3 5.3 9.9 16.8 20.1 19.8 18.4 12.5 ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.5 14.4 22.2 25.1 33.3 36.3 36.1 35.3 30.2 26.6 19.8 14.1 25.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.4 15.7 16.9 15.2 16.5 16.2 16.3 16.9 17.7 ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.83 3.52 3.84 5.93 6.78 7.39 9.57 7.30 4.61 4.55 5.31 4.05 5.47 MEAN OF MIXING RATIO AT 09 GMT. 3.88 4.24 4.74 6.32 6.58 8.25 10.73 9.48 6.06 8.01 7.37 6.32 6.83 MEAN OF MIXING RATIO AT 15 GMT. 3.37 3.51 4.54 5.73 7.05 8.36 10.04 9.21 6.13 6.38 6.59 5.33 6.35 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.5 -9.0 -5.0 5.5 10.5 12.5 16.0 15.0 8.0 ***** ***** ***** ****** DAY 27 3 2 21 3 10 3 9 12 ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.5 23.0 31.5 34.0 40.0 39.5 40.5 38.0 36.5 31.0 24.5 21.5 40.5 DAY 7 23 15 25 24 23 10 6 2 6 18 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.1 1.0 13.4 11.2 0.0 0.0 0.0 0.0 0.0 0.0 7.0 12.0 13.4 DAY 14 14 30 26 ** ** ** ** ** ** 11 20 MONTHLY TOTAL PRECIPITATION IN MM. 5.1 2.4 17.9 21.1 0.0 0.0 0.0 0.0 0.0 0.0 16.4 23.1 86.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 29.5 24.5 0.0 45.9 NO. OF DAYS WITH PRECIPITATION. 2 3 4 6 0 0 0 0 0 0 5 6 26 NO. OF DAYS PRECIPITATION EQUAL 1 1 2 5 0 0 0 0 0 0 4 4 17 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 1 0 0 0 0 0 0 0 1 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 76 70 52 55 37 33 42 38 38 51 70 72 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 48 42 30 33 20 21 28 25 22 34 51 60 35 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 59 47 39 38 27 27 30 31 30 44 65 68 42 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 15 6 1 0 0 0 0 0 0 *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 5 17 8 1 1 *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 4 5 25 30 31 31 13 5 0 0 144 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 0 2 0 0 0 0 0 3 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 25 21 5 0 0 0 0 0 0 *** *** *** *** DATE OF START AND END FREEZING START = 1 JAN. END = 9 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1972 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.3 -2.0 10.5 16.5 20.1 28.5 26.9 23.8 22.1 17.8 ***** 3.1 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -3.6 -7.9 4.5 9.3 12.5 20.2 20.5 14.5 13.3 10.9 ***** -3.0 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 4.2 4.0 16.4 23.7 27.6 36.8 33.6 32.7 30.8 25.3 ***** 9.2 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 7.8 11.9 11.9 14.4 15.1 16.6 13.1 18.2 17.5 14.4 ***** 12.2 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.63 3.03 5.97 7.07 8.27 8.42 8.21 7.11 6.39 5.58 ***** 3.52 ***** MEAN OF MIXING RATIO AT 09 GMT. 4.37 3.82 7.40 8.15 7.64 8.86 10.68 8.02 8.54 7.00 ***** 5.15 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.09 3.31 6.87 7.38 7.33 6.36 9.60 7.12 8.20 7.23 ***** 4.37 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -18.0 -20.0 -2.0 1.0 9.0 18.0 16.0 10.2 6.5 6.0 ***** -12.0 ****** DAY 31 1 21 2 8 1 25 27 20 21 ** 27 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 10.0 13.0 24.0 35.0 35.0 42.0 40.0 36.0 37.0 29.0 ***** 18.4 ****** DAY 16 19 25 24 30 25 2 19 12 7 ** 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 12.0 5.7 7.5 11.5 12.0 0.0 0.0 0.0 0.0 0.0 ***** 7.5 ****** DAY 30 22 4 25 21 ** ** ** ** ** ** 2 MONTHLY TOTAL PRECIPITATION IN MM. 58.9 9.2 29.5 14.2 15.7 0.0 0.0 0.0 0.0 0.0 ***** 18.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 67.1 20.5 0.0 12.4 NO. OF DAYS WITH PRECIPITATION. 14 4 8 2 2 0 0 0 0 0 *** 5 *** NO. OF DAYS PRECIPITATION EQUAL 12 3 8 2 2 0 0 0 0 0 *** 4 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 0 1 1 0 0 0 0 0 *** 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 88 79 80 67 61 40 38 42 43 52 *** 84 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 83 79 79 48 34 23 31 28 30 33 *** 72 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 89 85 78 56 48 25 35 32 41 48 *** 75 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 14 22 0 0 0 0 0 0 0 0 *** 14 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 2 8 11 2 0 0 *** 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 3 6 0 0 0 0 0 0 0 0 *** 2 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 4 9 27 26 15 17 0 *** 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 1 0 0 0 *** 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 *** 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 27 25 6 0 0 0 0 0 0 0 *** 24 *** DATE OF START AND END FREEZING START = 5 DEC. END = 22 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.5 9.0 11.0 18.1 23.7 29.5 29.6 26.5 22.5 17.0 10.0 3.7 16.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -6.3 2.0 3.8 9.0 14.9 20.5 20.3 16.6 12.3 7.2 1.3 -4.6 8.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.3 15.9 18.1 27.1 32.5 38.4 38.8 36.3 32.5 26.9 18.8 12.0 25.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.6 13.9 14.3 18.1 17.6 17.9 18.5 19.7 20.2 19.7 17.5 16.6 17.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.79 4.27 5.23 7.13 6.80 9.30 9.48 9.27 7.56 4.71 3.13 2.65 6.03 MEAN OF MIXING RATIO AT 09 GMT. 4.01 5.16 5.73 5.90 5.74 7.11 9.84 10.87 11.81 10.15 7.16 4.70 7.35 MEAN OF MIXING RATIO AT 15 GMT. 3.14 4.66 6.06 6.44 7.59 7.46 9.01 12.06 7.92 4.63 3.93 3.58 6.37 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.0 -6.0 -4.5 3.5 11.0 16.0 17.0 10.0 5.5 1.5 -5.0 -8.5 -12.0 DAY 26 7 11 1 11 27 30 11 30 1 10 16 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 23.5 29.0 35.5 38.5 41.0 44.0 41.0 36.0 34.0 32.0 24.0 44.0 DAY 30 20 22 28 31 12 12 1 2 11 2 4 24 HOUR MAXIMUM PRECIPITATION IN MM. 3.0 12.5 6.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0 12.5 DAY 24 23 18 3 ** ** ** ** ** ** ** 14 MONTHLY TOTAL PRECIPITATION IN MM. 5.0 21.0 25.6 13.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.5 71.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 72.3 18.6 0.0 9.1 NO. OF DAYS WITH PRECIPITATION. 2 4 8 3 0 0 0 0 0 0 0 2 19 NO. OF DAYS PRECIPITATION EQUAL 2 3 7 3 0 0 0 0 0 0 0 2 17 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 0 0 0 0 0 0 0 0 0 0 1 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 71 70 57 37 36 33 40 44 44 49 71 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 63 47 46 26 20 17 22 28 38 42 52 53 38 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 70 59 63 48 35 24 28 41 34 33 43 63 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 27 3 2 0 0 0 0 0 0 0 6 19 57 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 1 15 12 6 0 0 0 0 34 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 8 26 30 29 31 24 6 1 0 155 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 7 9 4 0 0 0 0 20 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 30 9 4 0 0 0 0 0 0 0 12 28 83 DATE OF START AND END FREEZING START = 8 NOV. END = 12 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.0 1.7 ***** ***** ***** ***** 29.4 26.5 22.5 13.9 11.6 4.5 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -4.9 -2.5 ***** ***** ***** ***** 20.8 17.0 13.2 4.9 2.8 -2.2 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.9 6.0 ***** ***** ***** ***** 37.9 35.9 31.8 22.9 20.4 11.3 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.8 8.5 ***** ***** ***** ***** 17.1 18.9 18.6 18.0 17.6 13.5 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.25 3.97 ***** ***** ***** ***** 11.57 13.26 10.19 4.79 4.42 3.85 ***** MEAN OF MIXING RATIO AT 09 GMT. 4.74 4.64 ***** ***** ***** ***** 16.61 15.80 12.59 6.08 5.17 5.47 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.30 4.24 ***** ***** ***** ***** 14.32 13.08 11.20 5.43 5.47 4.88 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -10.0 ***** ***** ***** ***** 17.0 12.0 7.5 1.5 -2.0 -10.5 ****** DAY 6 3 ** ** ** ** 12 20 30 13 26 6 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 11.5 ***** ***** ***** ***** 41.0 42.0 38.5 28.0 26.0 15.0 ****** DAY 23 17 ** ** ** ** 10 23 21 21 6 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 20.0 9.5 ***** ***** ***** ***** 0.0 0.0 0.0 0.0 0.0 12.5 ****** DAY 18 26 ** ** ** ** ** ** ** ** ** 16 MONTHLY TOTAL PRECIPITATION IN MM. 63.1 26.5 ***** ***** ***** ***** 0.0 0.0 0.0 0.0 0.0 27.7 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 76.4 ***** 0.0 23.6 NO. OF DAYS WITH PRECIPITATION. 8 8 *** *** *** *** 0 0 0 0 0 6 *** NO. OF DAYS PRECIPITATION EQUAL 7 7 *** *** *** *** 0 0 0 0 0 6 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 4 0 *** *** *** *** 0 0 0 0 0 1 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 84 87 *** *** *** *** 44 56 63 53 56 81 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 76 85 *** *** *** *** 41 44 44 39 34 67 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 88 85 *** *** *** *** 44 48 52 47 50 81 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 16 9 *** *** *** *** 0 0 0 0 0 6 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 *** *** *** *** 14 4 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 1 5 *** *** *** *** 0 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 *** *** *** *** 31 31 24 0 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 *** *** *** *** 9 2 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 *** *** *** *** 0 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 26 17 *** *** *** *** 0 0 0 0 7 25 *** DATE OF START AND END FREEZING START = 11 NOV. END = 24 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.9 6.3 11.3 15.2 22.6 24.4 26.7 ***** 21.0 15.9 8.3 5.4 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -2.9 0.2 3.2 7.2 12.9 12.1 13.5 ***** 12.0 5.5 -0.8 -2.7 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.7 12.4 19.4 23.3 32.4 36.7 39.8 ***** 30.1 26.3 17.3 13.4 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.6 12.2 16.2 16.1 19.5 24.6 26.3 ***** 18.1 20.8 18.1 16.1 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.60 4.56 5.70 7.52 10.44 15.48 14.74 ***** 8.61 5.32 3.24 3.66 ***** MEAN OF MIXING RATIO AT 09 GMT. 4.31 6.29 8.99 9.11 14.26 20.07 21.49 ***** 8.30 7.68 3.96 4.48 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.81 4.85 7.77 8.06 13.29 15.93 15.55 ***** 8.84 8.60 4.16 4.38 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.5 -7.0 -7.0 0.0 9.5 7.5 10.0 ***** 9.0 -2.5 -6.0 -7.5 ****** DAY 15 14 6 5 5 21 2 ** 21 27 17 27 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.2 22.0 27.0 33.0 37.0 41.0 47.0 ***** 35.0 30.0 27.0 24.0 ****** DAY 12 25 18 22 28 15 12 ** 16 1 1 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 3.5 5.3 4.5 18.0 2.6 0.0 0.0 0.0 0.0 1.0 6.0 4.2 18.0 DAY 28 4 30 25 15 ** ** ** ** 15 30 3 MONTHLY TOTAL PRECIPITATION IN MM. 12.9 9.5 8.0 57.5 2.6 0.0 0.0 0.0 0.0 1.2 6.5 16.3 114.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 26.6 52.5 0.0 21.0 NO. OF DAYS WITH PRECIPITATION. 5 3 3 8 1 0 0 0 0 2 2 6 30 NO. OF DAYS PRECIPITATION EQUAL 5 3 2 7 1 0 0 0 0 1 1 6 26 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 3 0 0 0 0 0 0 0 0 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 83 86 72 68 53 58 46 *** 54 50 52 77 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 64 73 62 52 48 48 46 *** 35 34 35 62 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 81 82 71 61 53 44 38 *** 44 43 44 71 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 13 5 3 0 0 0 0 *** 0 0 6 13 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 *** 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 *** 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 3 26 30 31 *** 11 7 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 7 13 *** 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 1 *** 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 25 15 11 2 0 0 0 *** 0 5 21 28 *** DATE OF START AND END FREEZING START = 21 OCT. END = 10 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.0 ***** ***** ***** ***** ***** ***** ***** 24.6 15.6 7.6 4.3 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -1.0 ***** ***** 7.7 13.5 15.2 20.8 22.6 14.6 7.3 -0.9 -2.1 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.1 ***** ***** ***** ***** ***** ***** ***** 34.7 23.9 16.1 10.6 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.1 ***** ***** ***** ***** ***** ***** ***** 20.1 16.7 17.0 12.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.01 ***** ***** 8.18 8.12 7.98 9.02 9.52 8.98 6.58 3.51 3.12 ***** MEAN OF MIXING RATIO AT 09 GMT. 4.82 ***** ***** 14.95 7.25 7.93 9.73 10.60 9.43 7.52 5.11 4.33 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.54 ***** ***** 11.99 5.93 6.12 7.87 8.94 7.31 7.00 3.86 3.56 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.0 ***** ***** 0.0 7.0 11.0 15.0 20.5 11.0 2.0 -7.0 -7.0 ****** DAY 6 ** ** 4 3 12 1 16 15 22 15 7 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 ***** ***** ***** ***** ***** ***** ***** 39.0 30.0 23.0 17.0 ****** DAY 22 ** ** ** ** ** ** ** 27 2 6 17 24 HOUR MAXIMUM PRECIPITATION IN MM. 10.1 ***** ***** 11.0 5.5 0.0 0.0 0.0 0.0 9.0 1.0 11.0 ****** DAY 24 ** ** 8 16 ** ** ** ** 31 1 12 MONTHLY TOTAL PRECIPITATION IN MM. 13.4 ***** ***** 35.9 5.5 0.0 0.0 0.0 0.0 9.0 1.0 21.5 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 15.5 48.0 0.0 36.5 NO. OF DAYS WITH PRECIPITATION. 3 *** *** 6 1 0 0 0 0 1 1 3 *** NO. OF DAYS PRECIPITATION EQUAL 3 *** *** 6 1 0 0 0 0 1 1 3 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 *** *** 1 0 0 0 0 0 0 0 1 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 *** *** 68 44 31 31 40 50 66 55 65 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 59 *** *** 67 26 21 22 26 28 53 44 57 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 65 *** *** 72 26 19 22 27 27 60 50 61 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 8 *** *** 0 0 0 0 0 0 0 10 9 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 *** *** 0 0 0 19 27 1 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 *** *** *** *** *** *** *** 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 *** *** *** *** *** *** *** 29 2 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 *** *** *** *** *** *** *** 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 *** *** *** *** *** *** *** 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 22 *** *** 2 0 0 0 0 0 0 18 27 *** DATE OF START AND END FREEZING START = 1 NOV. END = 5 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. -1.1 6.9 16.7 17.0 22.2 24.8 25.5 23.4 18.9 13.7 9.8 4.1 15.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.9 -1.3 6.5 8.4 11.8 11.9 12.8 10.0 4.9 1.5 -3.8 -7.0 4.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 3.8 15.1 26.8 25.7 32.5 37.6 38.1 36.8 32.8 25.8 23.3 15.3 26.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.6 16.4 20.3 17.3 20.7 25.7 25.3 26.8 27.9 24.3 27.1 22.3 22.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.83 3.84 5.92 7.06 8.15 8.82 8.05 7.50 6.12 6.06 4.64 3.53 6.04 MEAN OF MIXING RATIO AT 09 GMT. 3.91 8.15 11.09 7.81 7.08 7.03 6.86 6.28 5.47 6.57 5.60 4.42 6.69 MEAN OF MIXING RATIO AT 15 GMT. 2.65 5.63 9.22 6.80 6.64 6.05 4.85 5.88 5.01 5.56 5.88 4.15 5.70 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -13.0 -4.0 0.0 3.0 8.0 8.0 8.0 7.0 2.0 -6.0 -9.0 -12.0 -13.0 DAY 26 3 16 17 18 13 17 31 8 26 29 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 8.0 22.0 35.0 32.0 36.0 44.0 42.0 41.0 37.0 34.0 29.0 24.5 44.0 DAY 4 19 24 21 16 20 10 17 5 18 5 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 13.0 1.0 11.0 16.0 3.0 0.0 0.0 0.0 0.0 5.0 4.5 30.5 30.5 DAY 8 8 31 2 26 ** ** ** ** 27 2 24 MONTHLY TOTAL PRECIPITATION IN MM. 67.7 1.0 11.0 37.5 4.5 0.0 0.0 0.0 0.0 9.5 6.7 31.5 169.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 47.0 24.8 0.0 28.2 NO. OF DAYS WITH PRECIPITATION. 11 1 1 6 2 0 0 0 0 5 3 2 31 NO. OF DAYS PRECIPITATION EQUAL 10 1 1 6 2 0 0 0 0 3 2 2 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 1 2 0 0 0 0 0 0 0 1 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 78 72 61 64 47 34 31 34 41 57 66 70 55 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 79 76 53 42 23 18 17 17 19 43 41 48 40 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 76 71 56 49 32 20 17 21 24 54 56 54 44 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 22 4 0 0 0 0 0 0 0 3 18 27 74 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 0 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 7 7 30 30 31 31 29 8 0 0 173 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 7 9 3 0 0 0 0 19 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 28 23 1 0 0 0 0 0 0 8 26 31 117 DATE OF START AND END FREEZING START = 21 OCT. END = 16 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.0 4.6 8.0 16.8 21.8 25.3 24.6 24.0 20.7 17.5 8.4 ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -9.8 -6.4 -1.5 5.0 9.9 14.2 11.8 13.0 8.3 7.1 1.1 ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.0 15.7 18.0 28.5 33.6 36.4 37.5 35.1 33.1 27.9 15.7 ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 21.8 22.1 19.5 23.5 23.7 22.2 25.7 22.1 24.8 20.8 14.6 ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.43 4.19 4.72 6.28 9.14 10.96 9.18 9.38 6.16 5.75 4.84 ***** ***** MEAN OF MIXING RATIO AT 09 GMT. 4.20 5.19 4.95 7.04 14.40 14.97 13.72 12.67 5.70 6.12 5.97 ***** ***** MEAN OF MIXING RATIO AT 15 GMT. 3.73 4.11 4.80 6.00 10.76 8.98 13.28 10.49 4.98 6.72 5.58 ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -16.0 -14.5 -6.5 -1.5 4.5 8.5 8.0 9.0 5.5 4.5 -3.5 ***** ****** DAY 16 8 1 3 4 10 10 25 19 7 6 ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 21.0 24.5 37.0 39.0 41.5 44.5 39.5 37.0 37.5 28.0 ***** ****** DAY 21 23 31 24 20 21 1 17 2 2 1 ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 13.5 31.0 6.5 8.5 3.5 0.0 0.0 0.0 0.0 0.0 15.0 ***** ****** DAY 27 26 4 15 4 ** ** ** ** ** 11 ** MONTHLY TOTAL PRECIPITATION IN MM. 30.5 73.5 17.3 18.7 7.0 0.0 0.0 0.0 0.0 0.0 17.0 ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 74.0 15.7 0.0 10.4 NO. OF DAYS WITH PRECIPITATION. 7 7 4 5 2 0 0 0 0 0 2 *** *** NO. OF DAYS PRECIPITATION EQUAL 7 6 3 5 2 0 0 0 0 0 2 *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 3 0 0 0 0 0 0 0 0 1 *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 77 70 56 64 59 55 54 42 54 80 *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 53 56 42 31 48 40 35 34 18 27 59 *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 64 60 52 37 52 30 38 34 19 46 71 *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 30 21 12 0 0 0 0 0 0 0 0 *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 11 25 29 31 28 29 5 0 *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 5 4 0 0 0 0 *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 30 27 20 2 0 0 0 0 0 0 11 *** *** DATE OF START AND END FREEZING START = 4 NOV. END = 4 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** ***** ***** ***** NO. OF DAYS WITH PRECIPITATION. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** *** *** *** *** *** *** *** *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** *** *** *** *** *** *** *** *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** *** *** *** *** *** *** *** *** *** *** *** *** DATE OF START AND END FREEZING START = ** **** END = ** **** IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.2 4.0 10.6 18.1 22.5 26.4 26.9 25.4 22.1 17.3 12.8 7.8 16.3 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.5 -2.5 3.4 8.8 11.8 15.2 15.9 14.0 11.3 7.8 4.3 0.1 7.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.0 10.4 17.8 27.4 33.2 37.5 37.9 36.8 32.9 26.9 21.3 15.4 25.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.5 12.9 14.4 18.6 21.4 22.3 22.0 22.8 21.6 19.1 17.0 15.3 18.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.00 3.73 4.88 7.19 8.41 10.18 10.86 9.13 8.01 6.85 5.87 3.97 6.84 MEAN OF MIXING RATIO AT 09 GMT. 4.67 5.30 6.80 9.70 10.02 12.04 11.24 9.87 9.53 8.37 8.05 5.61 8.43 MEAN OF MIXING RATIO AT 15 GMT. 3.70 4.53 6.13 8.62 8.38 10.53 9.67 8.67 8.95 7.56 7.47 5.57 7.48 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.0 -14.0 -4.0 1.0 8.0 11.0 14.0 9.0 5.0 2.0 2.0 -4.0 -14.0 DAY 12 3 6 18 3 5 3 16 17 25 7 15 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.0 15.0 26.0 34.0 38.0 46.0 40.0 40.0 38.0 36.0 26.0 19.0 46.0 DAY 13 16 31 15 24 10 9 4 6 4 15 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 8.0 6.5 14.5 8.0 2.0 0.0 0.0 0.0 0.0 0.0 2.5 11.5 14.5 DAY 24 7 3 5 18 ** ** ** ** ** 25 13 MONTHLY TOTAL PRECIPITATION IN MM. 24.5 33.0 33.5 9.5 2.0 0.0 0.0 0.0 0.0 0.0 4.5 14.0 121.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 75.2 9.5 0.0 15.3 NO. OF DAYS WITH PRECIPITATION. 5 11 6 2 1 0 0 0 0 0 2 2 29 NO. OF DAYS PRECIPITATION EQUAL 5 11 6 2 1 0 0 0 0 0 2 2 29 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 0 0 0 0 0 0 0 0 1 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 72 75 68 62 58 53 50 49 59 64 74 71 63 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 73 69 55 45 33 31 27 26 32 40 57 54 45 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 74 74 65 50 39 33 29 28 37 48 65 69 51 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 10 7 1 0 0 0 0 0 0 0 0 2 20 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 1 0 0 0 0 0 0 0 0 0 0 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 6 26 30 31 31 26 10 0 0 160 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 7 3 3 0 0 0 0 13 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 0 0 0 0 0 0 2 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 19 23 6 0 0 0 0 0 0 0 0 15 63 DATE OF START AND END FREEZING START = 3 DEC. END = 13 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.9 7.1 12.8 17.9 22.5 25.3 26.8 25.6 22.5 16.0 12.3 8.2 16.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.8 0.4 4.6 8.6 13.4 15.8 16.9 15.8 12.7 7.2 3.9 0.6 8.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.7 13.7 21.2 27.1 32.0 35.0 37.4 35.4 32.8 24.9 20.8 15.8 25.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.5 13.3 16.6 18.5 18.6 19.2 20.5 19.6 20.1 17.7 16.9 15.2 17.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.98 4.79 6.15 7.98 9.41 10.51 11.70 10.43 8.82 6.68 5.06 4.43 7.49 MEAN OF MIXING RATIO AT 09 GMT. 5.24 5.80 7.50 8.70 9.97 10.73 13.00 10.97 9.53 7.72 6.63 5.92 8.48 MEAN OF MIXING RATIO AT 15 GMT. 4.86 5.28 5.66 7.14 7.08 9.50 11.21 9.80 8.85 6.97 5.82 5.37 7.29 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.0 -6.0 -1.0 -2.0 8.0 12.0 15.0 13.0 9.0 3.0 -2.0 -2.0 -6.0 DAY 31 4 5 3 4 10 3 27 27 29 27 13 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.0 19.0 28.0 37.0 38.0 40.0 40.0 38.0 38.0 30.0 27.0 19.0 40.0 DAY 20 10 26 23 28 30 6 6 17 15 6 18 24 HOUR MAXIMUM PRECIPITATION IN MM. 8.0 36.0 5.5 7.5 14.5 0.0 6.0 0.0 0.0 2.5 2.0 7.0 36.0 DAY 4 12 16 26 2 ** 22 ** ** 20 26 27 MONTHLY TOTAL PRECIPITATION IN MM. 24.0 83.5 8.5 25.0 24.0 0.0 6.0 0.0 0.0 2.5 2.0 10.0 185.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 62.5 26.4 3.2 7.8 NO. OF DAYS WITH PRECIPITATION. 5 7 2 6 3 0 1 0 0 1 1 3 29 NO. OF DAYS PRECIPITATION EQUAL 5 7 2 6 3 0 1 0 0 1 1 3 29 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 4 0 0 1 0 0 0 0 0 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 76 78 73 64 53 45 46 48 50 61 56 73 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 63 61 50 41 34 30 35 31 30 43 43 55 43 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 70 49 48 35 36 36 34 36 54 53 62 49 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 7 2 0 0 0 0 0 0 0 0 0 0 9 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 9 22 29 28 30 24 1 0 0 143 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 4 0 0 0 0 0 5 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 28 16 3 2 0 0 0 0 0 0 5 18 72 DATE OF START AND END FREEZING START = 14 NOV. END = 4 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.5 4.1 9.0 18.0 23.3 26.7 28.1 26.7 22.0 16.8 8.1 1.8 15.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.6 -1.2 2.0 9.2 14.2 16.6 18.4 16.7 11.6 8.6 1.7 -4.0 7.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.6 9.5 15.9 26.9 32.4 36.8 37.7 36.8 32.5 25.1 14.4 7.7 23.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.2 10.7 13.9 17.7 18.2 20.2 19.3 20.1 20.9 16.5 12.7 11.7 16.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** 5.22 7.95 10.20 11.26 14.58 13.37 10.23 8.14 5.47 3.77 ***** MEAN OF MIXING RATIO AT 09 GMT. 5.53 4.80 6.71 11.15 12.84 14.48 17.03 18.27 14.90 11.58 7.55 5.22 10.84 MEAN OF MIXING RATIO AT 15 GMT. 4.55 4.61 5.87 9.15 10.37 12.44 15.03 15.43 12.90 10.65 6.73 4.26 9.33 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.0 -8.0 -6.0 4.0 9.0 14.0 16.0 12.0 8.0 -1.0 -6.0 -17.0 -17.0 DAY 26 20 9 1 11 1 1 30 22 26 18 10 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 16.0 25.0 35.0 38.0 42.0 45.0 42.0 35.0 32.0 24.5 15.0 45.0 DAY 11 5 25 28 20 12 31 1 3 1 9 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 12.0 19.5 12.5 7.5 3.5 0.0 0.0 0.0 0.0 2.5 13.5 24.5 24.5 DAY 29 9 26 22 16 ** ** ** ** 2 1 8 MONTHLY TOTAL PRECIPITATION IN MM. 33.5 73.0 71.0 11.0 7.0 0.0 0.0 0.0 0.0 7.0 41.5 54.0 298.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 59.6 6.0 0.0 34.4 NO. OF DAYS WITH PRECIPITATION. 7 10 9 2 2 0 0 0 0 4 7 8 49 NO. OF DAYS PRECIPITATION EQUAL 7 10 9 2 2 0 0 0 0 4 7 8 49 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 3 4 0 0 0 0 0 0 0 2 1 11 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** 78 68 59 50 56 65 70 73 88 80 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 65 59 49 41 37 39 46 49 56 72 80 55 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 78 79 66 55 50 42 44 55 58 71 83 78 63 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 7 8 4 0 0 0 0 0 0 0 3 14 36 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 2 0 0 0 0 5 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 8 23 30 31 31 27 5 0 0 155 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 7 9 0 0 0 0 18 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 1 0 0 0 0 0 1 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 19 15 4 0 0 0 0 0 0 1 12 27 78 DATE OF START AND END FREEZING START = 26 OCT. END = 9 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.2 ***** 8.7 14.4 22.5 26.5 28.8 27.2 22.6 15.9 11.8 4.3 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -2.7 ***** 0.8 6.5 12.9 16.0 17.6 16.4 11.5 5.0 1.6 -3.3 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.0 14.3 16.6 22.2 32.2 37.0 40.0 38.1 33.4 26.7 21.9 12.0 25.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.7 ***** 15.8 15.7 19.3 21.0 22.4 21.7 21.9 21.7 20.3 15.3 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.86 3.84 4.41 8.23 10.18 10.39 12.59 11.72 7.39 5.06 3.88 3.41 7.08 MEAN OF MIXING RATIO AT 09 GMT. 5.58 6.64 5.75 8.59 10.56 10.59 13.87 13.29 7.90 6.26 4.61 4.49 8.18 MEAN OF MIXING RATIO AT 15 GMT. 4.67 5.64 5.25 8.36 10.08 9.11 12.07 10.89 7.40 6.24 4.47 4.34 7.38 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 ***** -4.0 2.5 8.5 11.5 14.0 12.5 6.5 -4.0 -7.0 -10.0 ****** DAY 30 ** 20 16 2 4 4 27 17 21 27 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 21.5 26.0 33.5 36.0 43.0 45.5 42.0 37.5 36.0 27.5 20.0 45.5 DAY 23 21 6 23 18 23 29 29 5 4 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 10.0 10.5 12.0 43.5 4.5 0.0 0.0 0.0 0.0 0.0 0.0 5.0 43.5 DAY 21 18 31 6 3 ** ** ** ** ** ** 7 MONTHLY TOTAL PRECIPITATION IN MM. 26.5 23.0 22.0 131.0 8.0 0.0 0.0 0.0 0.0 0.0 0.0 12.5 223.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 32.1 62.3 0.0 5.6 NO. OF DAYS WITH PRECIPITATION. 6 4 3 7 2 0 0 0 0 0 0 4 26 NO. OF DAYS PRECIPITATION EQUAL 6 4 3 7 2 0 0 0 0 0 0 4 26 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 1 4 0 0 0 0 0 0 0 0 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 84 78 71 80 58 46 49 50 46 54 53 70 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 79 65 51 51 35 26 29 31 24 28 28 52 42 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 81 77 62 65 46 28 32 32 32 40 38 68 50 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 15 *** 1 0 0 0 0 0 0 1 1 16 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 *** 0 0 0 0 2 1 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 1 26 30 31 31 23 8 0 0 150 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 8 19 6 0 0 0 0 33 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 0 0 2 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 20 *** 9 0 0 0 0 0 0 1 7 23 *** DATE OF START AND END FREEZING START = 21 OCT. END = 27 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.4 1.9 11.6 17.5 ***** 25.0 27.9 28.1 21.8 16.6 ***** ***** ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -5.5 -5.7 3.0 7.5 ***** 14.2 17.8 17.4 11.8 7.1 ***** ***** ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.5 9.3 20.3 27.5 ***** 35.8 38.1 38.8 31.9 25.8 ***** ***** ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 16.0 15.0 17.3 20.0 ***** 21.5 20.3 21.4 20.2 18.7 ***** ***** ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.20 3.08 5.36 6.08 ***** 9.00 11.75 11.91 8.12 6.76 ***** ***** ***** MEAN OF MIXING RATIO AT 09 GMT. 4.10 3.85 5.34 5.50 ***** 10.45 14.20 15.24 11.34 9.03 ***** ***** ***** MEAN OF MIXING RATIO AT 15 GMT. 4.28 3.78 5.19 5.62 ***** 8.77 12.60 13.18 9.45 8.41 ***** ***** ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -12.5 -2.0 3.0 ***** 10.5 15.5 14.5 6.0 0.0 ***** ***** ****** DAY 22 20 6 5 ** 7 7 31 30 25 ** ** ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.5 23.0 24.0 34.5 ***** 38.5 39.0 41.0 37.0 31.5 ***** ***** ****** DAY 5 14 8 24 ** 11 7 9 3 18 ** ** 24 HOUR MAXIMUM PRECIPITATION IN MM. 19.0 4.5 13.5 5.0 ***** 0.0 0.0 0.0 0.0 0.0 ***** ***** ****** DAY 30 5 23 1 ** ** ** ** ** ** ** ** MONTHLY TOTAL PRECIPITATION IN MM. 44.0 9.5 49.5 11.0 ***** 0.0 0.0 0.0 0.0 0.0 ***** ***** ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 90.4 9.6 0.0 0.0 NO. OF DAYS WITH PRECIPITATION. 6 3 9 4 *** 0 0 0 0 0 *** *** *** NO. OF DAYS PRECIPITATION EQUAL 6 3 9 4 *** 0 0 0 0 0 *** *** *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 1 0 *** 0 0 0 0 0 *** *** *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 74 74 73 46 *** 40 46 49 55 66 *** *** *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 52 55 35 27 *** 28 33 34 36 41 *** *** *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 68 70 47 37 *** 30 37 38 41 56 *** *** *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 25 19 0 0 *** 0 0 0 0 0 *** *** *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 *** 0 0 0 0 0 *** *** *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 *** 0 0 0 0 0 *** *** *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 13 *** 30 30 31 21 3 *** *** *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 *** 0 0 12 0 0 *** *** *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 *** 0 0 0 0 0 *** *** *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 31 25 8 0 *** 0 0 0 0 1 *** *** *** DATE OF START AND END FREEZING START = 25 OCT. END = 18 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** 8.4 9.7 18.6 23.0 28.6 29.9 25.2 22.4 17.6 11.0 5.7 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** -0.1 2.2 9.9 14.0 19.8 21.6 16.4 12.3 8.9 3.6 0.3 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** 17.3 17.0 27.5 31.8 37.6 38.4 33.8 32.5 26.3 18.6 11.1 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** 17.4 14.8 17.6 17.8 17.8 16.8 17.4 20.2 17.4 15.0 10.8 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** 3.79 5.29 7.18 9.04 10.39 11.71 10.01 5.74 6.30 4.83 4.66 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** 5.58 6.05 9.52 11.00 10.93 13.28 11.32 6.50 6.03 5.03 6.00 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** 5.13 5.83 8.65 9.61 10.37 11.38 11.09 7.68 6.34 5.04 5.21 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** -4.0 -5.0 5.0 9.5 13.0 18.0 13.5 9.5 3.5 -1.0 -6.0 ****** DAY ** 8 4 9 1 12 14 22 13 24 22 27 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** 25.5 28.0 35.5 36.0 42.0 43.5 36.5 36.0 35.5 23.5 23.5 ****** DAY ** 26 24 24 31 8 28 6 3 1 12 2 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** 0.5 13.0 0.5 1.0 0.0 0.0 0.0 0.0 0.0 1.0 16.0 ****** DAY ** 18 4 25 18 ** ** ** ** ** 28 20 MONTHLY TOTAL PRECIPITATION IN MM. ***** 0.5 24.5 1.0 1.0 0.0 0.0 0.0 0.0 0.0 2.0 46.5 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 33.1 2.6 0.0 64.2 NO. OF DAYS WITH PRECIPITATION. *** 1 6 2 1 0 0 0 0 0 3 7 *** NO. OF DAYS PRECIPITATION EQUAL *** 0 5 0 1 0 0 0 0 0 1 7 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** 0 1 0 0 0 0 0 0 0 0 1 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** 67 77 58 50 43 47 53 40 57 69 78 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** 45 49 42 37 26 30 33 21 28 36 69 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** 61 69 53 42 33 34 39 35 45 52 78 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** 2 5 0 0 0 0 0 0 0 0 3 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** 0 0 0 0 10 18 0 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 0 0 0 0 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 9 22 29 30 30 27 7 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 0 0 5 4 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 0 0 0 0 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** 8 12 0 0 0 0 0 0 0 4 12 *** DATE OF START AND END FREEZING START = 22 NOV. END = 15 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.4 5.2 6.5 16.4 22.8 ***** ***** ***** 22.1 19.1 8.8 3.1 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -1.5 0.1 1.5 9.7 14.6 18.6 19.6 16.9 13.2 10.5 4.1 -1.1 8.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.8 9.8 11.6 23.0 31.0 ***** ***** ***** 31.0 27.2 14.7 7.6 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.3 9.7 10.1 13.3 16.4 ***** ***** ***** 17.8 16.7 10.6 8.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.80 4.43 4.94 7.03 6.93 7.28 11.24 8.90 6.31 5.73 4.81 4.35 6.31 MEAN OF MIXING RATIO AT 09 GMT. 4.03 5.34 6.13 6.83 5.99 7.58 10.84 8.42 6.48 6.10 5.01 4.85 6.47 MEAN OF MIXING RATIO AT 15 GMT. 4.01 4.74 5.33 5.83 5.91 7.67 11.50 9.90 7.05 5.18 ***** 4.54 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.5 -2.5 -2.0 3.9 10.5 13.5 16.5 12.5 10.0 3.5 -2.5 -11.0 -11.0 DAY 29 2 18 1 1 5 8 10 11 18 17 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 18.0 22.0 29.5 36.5 ***** ***** ***** 35.5 35.5 25.5 14.5 ****** DAY 12 27 2 18 26 ** ** ** 27 5 9 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 1.5 16.0 14.0 16.5 2.5 0.0 0.0 0.0 0.0 2.0 6.1 14.6 16.5 DAY 24 11 12 12 14 ** ** ** ** 24 23 3 MONTHLY TOTAL PRECIPITATION IN MM. 1.5 38.0 74.0 39.2 2.5 0.0 0.0 0.0 0.0 2.0 11.4 42.8 211.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 53.7 19.7 0.0 26.6 NO. OF DAYS WITH PRECIPITATION. 1 8 15 8 1 0 0 0 1 1 8 8 51 NO. OF DAYS PRECIPITATION EQUAL 1 7 12 8 1 0 0 0 0 1 3 7 40 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 3 1 0 0 0 0 0 0 0 2 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 76 85 81 67 44 34 48 46 38 53 68 85 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 52 67 64 39 21 21 30 25 23 26 44 73 40 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 68 81 81 54 28 26 34 33 32 36 *** 85 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 8 0 0 0 0 0 0 0 0 0 0 5 13 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 8 7 2 0 0 0 0 17 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 *** *** *** 0 0 0 2 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 19 *** *** *** 23 9 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 *** *** *** 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 *** *** *** 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 21 15 7 0 0 0 0 0 0 0 8 17 68 DATE OF START AND END FREEZING START = 15 NOV. END = 24 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C.***** 6.7 12.4 18.0 23.9 26.2 27.9 27.1 23.5 13.7 11.5 6.6 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** -0.1 5.8 11.1 16.5 18.5 20.3 18.9 15.4 6.4 4.3 -0.3 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** 13.5 19.1 24.9 31.3 33.9 35.5 35.3 31.5 21.0 18.7 13.4 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** 13.6 13.3 13.8 14.8 15.4 15.2 16.4 16.1 14.6 14.4 13.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** 3.77 5.13 6.22 6.86 7.93 7.19 6.90 5.60 4.57 3.49 2.89 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** 4.76 5.13 5.31 6.26 8.15 6.98 6.92 6.41 5.22 4.42 3.56 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** 5.00 5.55 4.98 6.73 8.28 6.64 6.99 5.96 4.66 3.76 3.32 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** -4.8 -1.8 2.4 9.4 12.4 16.0 15.4 10.4 -1.6 -6.2 -7.6 ****** DAY ** 8 23 1 8 22 13 31 25 16 30 3 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** 22.6 25.0 35.0 36.8 39.4 41.0 37.0 39.4 32.2 29.2 25.6 ****** DAY ** 27 14 27 25 5 9 4 6 5 7 24 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** 6.0 18.0 17.0 6.0 0.0 0.0 0.0 0.0 13.0 0.3 10.0 ****** DAY ** 21 29 6 29 ** ** ** ** 27 4 29 MONTHLY TOTAL PRECIPITATION IN MM. ***** 7.4 40.9 32.0 6.3 0.0 0.0 0.0 0.0 16.0 0.3 10.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 42.8 33.9 0.0 23.3 NO. OF DAYS WITH PRECIPITATION. *** 3 9 4 3 0 0 0 0 3 1 1 *** NO. OF DAYS PRECIPITATION EQUAL *** 2 7 4 1 0 0 0 0 3 0 1 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** 0 1 1 0 0 0 0 0 1 0 1 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** 79 68 61 41 38 33 35 39 59 53 62 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** 51 38 31 23 24 20 19 22 36 32 37 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** 61 49 33 27 25 19 20 24 37 36 42 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** 5 0 0 0 0 0 0 0 0 1 5 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** 0 0 1 3 5 12 4 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 0 0 0 0 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 11 21 30 31 31 20 4 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 0 0 0 1 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 0 0 0 0 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. *** 12 3 0 0 0 0 0 0 6 4 19 *** DATE OF START AND END FREEZING START = 13 OCT. END = 23 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.1 6.1 11.4 18.2 24.2 28.8 30.2 27.1 23.6 17.2 12.4 7.3 17.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.3 0.7 5.4 11.6 16.5 21.0 23.2 20.1 15.6 9.1 5.2 1.4 10.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.5 11.5 17.4 24.8 31.8 36.5 37.1 34.2 31.5 25.3 19.6 13.2 24.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.8 10.8 12.0 13.2 15.3 15.5 13.9 14.1 15.9 16.2 14.4 11.8 13.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.91 3.62 5.05 6.17 5.81 5.49 6.47 6.17 4.60 4.10 3.44 3.88 4.81 MEAN OF MIXING RATIO AT 09 GMT. 2.91 3.28 4.48 5.80 5.81 6.57 7.01 6.99 5.36 5.58 4.69 4.72 5.27 MEAN OF MIXING RATIO AT 15 GMT. 2.75 3.58 4.19 5.31 5.41 6.33 6.87 7.07 5.13 5.05 4.10 4.18 5.00 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.6 -6.8 0.0 3.4 11.2 17.2 16.4 15.4 7.8 5.6 -2.6 -7.6 -7.6 DAY 21 7 7 4 4 1 24 27 27 4 16 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 20.6 28.8 32.0 39.0 44.2 42.6 38.2 38.8 28.4 27.0 18.8 44.2 DAY 29 2 21 14 28 17 1 5 6 11 10 27 24 HOUR MAXIMUM PRECIPITATION IN MM. 2.4 7.0 22.0 19.0 0.0 0.0 8.0 0.0 0.0 2.0 0.0 6.0 22.0 DAY 19 26 24 27 ** ** 11 ** ** 16 ** 20 MONTHLY TOTAL PRECIPITATION IN MM. 3.9 30.0 67.0 37.1 0.0 0.0 8.0 0.0 0.0 2.0 0.0 7.9 155.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 64.7 23.8 5.1 6.4 NO. OF DAYS WITH PRECIPITATION. 4 10 7 7 0 0 1 0 0 1 0 5 35 NO. OF DAYS PRECIPITATION EQUAL 1 7 7 5 0 0 1 0 0 1 0 2 24 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 2 2 0 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 70 75 75 58 39 26 28 33 34 48 51 74 51 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 39 42 41 32 20 17 18 21 18 28 32 49 30 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 42 48 39 31 20 17 19 22 19 30 36 52 31 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 6 3 0 0 0 0 0 0 0 0 0 3 12 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 3 14 24 13 2 0 0 0 56 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 7 23 30 31 29 19 0 0 0 139 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 6 3 0 0 0 0 0 9 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 20 11 2 0 0 0 0 0 0 0 6 7 46 DATE OF START AND END FREEZING START = 16 NOV. END = 25 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 0.8 1.7 11.2 17.2 21.3 28.5 29.5 26.2 23.3 18.3 10.8 7.4 16.3 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.6 -2.9 5.1 9.7 14.2 21.2 22.3 18.2 14.5 9.7 4.4 2.0 9.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.2 6.3 17.4 24.6 28.4 35.8 36.6 34.2 32.0 26.9 17.1 12.8 23.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.8 9.2 12.3 14.9 14.2 14.6 14.3 16.0 17.5 17.2 12.7 10.8 13.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.86 3.45 5.11 4.31 6.74 6.77 7.88 5.73 4.18 3.24 4.27 4.15 4.89 MEAN OF MIXING RATIO AT 09 GMT. 3.23 3.65 4.83 4.96 6.74 7.34 8.42 6.20 5.33 3.73 4.66 4.40 5.29 MEAN OF MIXING RATIO AT 15 GMT. 3.19 3.54 4.52 4.36 7.26 8.03 8.11 6.07 5.14 4.20 4.92 5.08 5.37 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.2 -6.6 -1.0 1.2 2.4 16.2 17.6 15.4 7.8 3.6 -0.2 -2.4 -8.2 DAY 31 5 1 1 2 16 26 29 24 25 23 10 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.4 13.8 24.6 30.8 37.0 40.8 42.5 37.6 39.4 32.6 21.0 21.0 42.5 DAY 4 22 27 29 28 24 9 11 14 8 16 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.4 9.0 16.0 8.0 7.0 0.6 0.0 0.0 0.0 0.0 8.0 7.0 16.0 DAY 30 23 19 30 8 8 ** ** ** ** 17 16 MONTHLY TOTAL PRECIPITATION IN MM. 11.3 24.7 20.0 8.0 16.0 0.6 0.0 0.0 0.0 0.0 14.5 10.9 106.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 52.8 23.2 0.0 24.0 NO. OF DAYS WITH PRECIPITATION. 6 8 7 1 3 1 0 0 0 0 3 5 34 NO. OF DAYS PRECIPITATION EQUAL 4 6 2 1 3 0 0 0 0 0 2 3 21 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 1 0 0 0 0 0 0 0 0 0 1 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 85 93 78 46 52 31 35 33 33 37 68 79 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 63 39 26 27 20 22 19 18 18 38 48 33 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 62 65 41 24 30 22 21 18 19 24 48 62 36 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 22 14 0 0 0 0 0 0 0 0 0 0 36 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 3 18 20 3 2 0 0 0 46 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 2 1 0 0 0 0 0 0 0 0 0 0 3 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 1 13 30 31 31 23 11 0 0 140 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 4 0 0 0 0 0 6 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 29 24 1 0 0 0 0 0 0 0 1 17 72 DATE OF START AND END FREEZING START = 23 NOV. END = 1 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.5 5.2 10.8 17.4 25.1 29.1 28.6 28.4 23.9 17.1 12.5 5.0 17.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.6 0.8 4.2 10.6 17.6 21.7 21.3 20.8 15.2 9.3 4.7 -0.4 10.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.6 9.5 17.4 24.1 32.5 36.5 35.9 36.0 32.6 25.1 20.2 10.4 23.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.2 8.7 13.2 13.5 14.9 14.8 14.6 15.2 17.4 15.8 15.5 10.8 13.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.89 4.36 4.34 6.16 7.17 7.59 6.75 6.41 4.54 3.67 2.86 3.12 5.07 MEAN OF MIXING RATIO AT 09 GMT. 4.59 4.87 3.89 5.38 7.93 7.90 7.55 7.34 5.53 4.17 3.55 3.87 5.55 MEAN OF MIXING RATIO AT 15 GMT. 4.62 4.95 4.08 5.55 7.93 8.46 7.67 6.81 5.77 4.06 3.63 3.64 5.60 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.0 -3.4 -1.6 4.4 13.2 16.4 17.6 16.4 9.8 1.6 -1.6 -7.0 -14.0 DAY 27 9 22 8 16 3 13 6 30 20 18 30 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 13.5 19.0 29.6 34.0 37.5 40.6 39.6 39.6 37.6 31.0 26.2 18.0 40.6 DAY 24 20 14 29 19 16 30 9 2 5 12 7 24 HOUR MAXIMUM PRECIPITATION IN MM. 21.0 11.0 10.0 9.2 1.0 0.0 0.0 0.0 0.0 0.0 0.0 18.0 21.0 DAY 26 11 26 7 12 ** ** ** ** ** ** 22 MONTHLY TOTAL PRECIPITATION IN MM. 63.8 38.2 14.1 16.5 1.3 0.0 0.0 0.0 0.0 0.0 0.0 31.0 164.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 70.4 10.8 0.0 18.8 NO. OF DAYS WITH PRECIPITATION. 15 13 4 4 3 0 0 0 0 0 0 3 42 NO. OF DAYS PRECIPITATION EQUAL 9 8 3 3 1 0 0 0 0 0 0 3 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 1 0 0 0 0 0 0 0 0 2 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 91 90 72 63 43 33 31 32 32 40 44 70 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 75 67 33 30 26 21 21 20 18 21 24 48 34 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 83 71 38 34 28 22 21 18 20 25 31 55 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 6 0 0 0 0 0 0 0 0 0 0 5 11 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 1 4 19 19 13 1 0 0 0 57 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 3 23 30 30 31 26 5 0 0 148 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 0 0 0 0 0 0 3 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 18 14 4 0 0 0 0 0 0 0 3 15 54 DATE OF START AND END FREEZING START = 17 NOV. END = 22 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.9 4.5 9.8 17.6 21.9 27.2 28.7 26.7 22.9 16.6 10.9 6.6 16.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.5 -0.2 5.4 11.3 15.0 19.8 21.2 18.6 15.1 9.1 4.1 2.3 10.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.3 9.2 14.2 24.0 28.8 34.5 36.1 34.7 30.7 24.0 17.8 11.1 22.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.8 9.4 8.8 12.7 13.8 14.7 14.9 16.1 15.6 14.9 13.7 8.8 12.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.98 3.69 5.78 6.01 5.98 6.01 5.76 4.36 4.27 3.33 3.09 3.78 4.67 MEAN OF MIXING RATIO AT 09 GMT. 3.83 3.52 4.83 4.75 5.44 5.86 7.04 5.44 5.75 4.51 4.03 4.02 4.92 MEAN OF MIXING RATIO AT 15 GMT. 3.97 3.75 5.00 4.64 5.20 5.67 7.05 5.09 5.17 3.86 3.61 4.11 4.76 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.6 -11.2 -2.0 4.4 9.0 13.4 19.0 12.4 6.2 3.8 -2.8 -3.6 -11.2 DAY 2 14 12 15 8 25 2 23 29 15 29 20 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.0 16.4 20.6 31.6 39.6 39.8 42.8 39.8 38.0 27.2 25.6 21.2 42.8 DAY 31 1 30 25 31 3 8 6 9 27 4 10 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.0 24.0 22.0 11.0 2.2 0.0 0.0 0.0 0.0 0.6 2.6 14.0 24.0 DAY 23 22 27 1 7 ** ** ** ** 5 15 14 MONTHLY TOTAL PRECIPITATION IN MM. 22.3 48.0 88.4 21.5 4.1 0.0 0.0 0.0 0.0 0.6 3.7 39.7 228.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 69.5 11.2 0.0 19.3 NO. OF DAYS WITH PRECIPITATION. 10 8 15 9 5 0 0 0 0 1 3 11 62 NO. OF DAYS PRECIPITATION EQUAL 9 5 9 3 1 0 0 0 0 0 2 7 36 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 3 1 0 0 0 0 0 0 0 2 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 89 79 86 59 43 30 28 25 33 38 52 70 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 48 47 27 24 17 19 16 21 24 32 47 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 63 57 52 29 24 17 20 15 21 24 34 56 34 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 4 0 0 0 0 0 0 0 0 0 0 9 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 2 11 12 9 3 0 0 0 37 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 1 0 0 0 0 0 0 0 0 0 0 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 5 11 28 31 31 21 0 0 0 127 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 1 0 0 0 0 0 1 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 22 15 3 0 0 0 0 0 0 0 3 12 55 DATE OF START AND END FREEZING START = 24 NOV. END = 13 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.5 6.5 7.5 15.9 ***** 28.0 28.2 25.4 21.3 16.1 12.0 6.2 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -1.6 1.2 2.0 9.7 ***** 21.2 20.6 18.6 13.1 8.1 4.9 2.3 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.6 11.9 12.9 22.1 ***** 34.7 35.8 32.3 29.5 24.1 19.0 10.0 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.2 10.7 10.9 12.4 ***** 13.5 15.2 13.7 16.4 16.0 14.1 7.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.40 3.08 3.64 6.24 ***** 7.80 6.69 6.44 4.47 3.36 2.95 4.58 ***** MEAN OF MIXING RATIO AT 09 GMT. 3.22 3.03 2.97 5.19 ***** 8.34 8.42 8.26 6.42 4.16 3.13 5.25 ***** MEAN OF MIXING RATIO AT 15 GMT. 3.56 2.82 3.11 4.90 ***** 7.79 7.96 7.97 5.71 4.15 3.47 5.42 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -13.0 -5.8 -4.4 4.0 ***** 17.0 16.6 13.4 8.8 0.6 -3.2 -4.0 ****** DAY 30 17 12 4 ** 11 17 16 14 19 29 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.4 24.4 23.6 29.0 ***** 39.4 39.4 36.8 36.6 29.4 24.6 16.6 ****** DAY 3 25 30 14 ** 19 6 25 25 12 13 28 24 HOUR MAXIMUM PRECIPITATION IN MM. 10.0 5.0 5.0 17.0 ***** 0.7 0.0 0.0 0.0 0.0 3.0 7.2 ****** DAY 25 28 18 3 ** 11 ** ** ** ** 16 4 MONTHLY TOTAL PRECIPITATION IN MM. 30.7 14.4 23.3 31.7 ***** 0.8 0.0 0.0 0.0 0.0 3.1 27.9 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 51.9 24.6 0.0 23.5 NO. OF DAYS WITH PRECIPITATION. 13 8 9 11 *** 2 0 0 0 0 2 10 *** NO. OF DAYS PRECIPITATION EQUAL 7 4 6 8 *** 0 0 0 0 0 1 7 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 0 1 *** 0 0 0 0 0 0 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 63 69 68 *** 39 33 39 38 43 46 85 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 50 36 32 36 *** 24 23 27 25 23 23 67 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 65 39 37 35 *** 24 21 26 24 27 32 76 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 9 2 2 0 *** 0 0 0 0 0 0 1 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 *** 16 13 7 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 4 0 0 0 *** 0 0 0 0 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 *** 30 31 26 12 0 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 *** 0 0 0 0 0 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 *** 0 0 0 0 0 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 20 15 11 0 *** 0 0 0 0 0 2 6 *** DATE OF START AND END FREEZING START = 28 NOV. END = 27 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 1.0 7.0 9.2 18.0 22.8 27.5 28.0 26.0 23.9 14.7 10.5 6.2 16.3 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.6 2.7 4.1 11.7 16.4 20.4 21.1 18.8 16.1 7.2 4.3 0.3 10.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.7 11.3 14.2 24.2 29.2 34.7 35.0 33.3 31.8 22.2 16.8 12.1 22.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.3 8.6 10.1 12.5 12.8 14.3 13.9 14.5 15.7 15.0 12.5 11.8 12.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.16 5.14 4.52 6.31 7.58 6.86 7.23 6.18 5.08 3.17 3.95 3.24 5.20 MEAN OF MIXING RATIO AT 09 GMT. 3.80 5.34 4.17 5.70 6.13 6.25 6.40 6.09 5.51 3.55 4.22 3.90 5.09 MEAN OF MIXING RATIO AT 15 GMT. 3.95 5.52 4.66 5.85 5.88 6.24 6.53 6.22 6.06 3.96 4.38 4.21 5.29 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.2 -3.0 -1.8 6.0 7.2 16.0 17.0 15.0 11.6 1.4 -3.0 -4.8 -14.2 DAY 16 17 15 2 10 24 31 2 29 9 23 7 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.2 19.6 21.2 31.8 35.4 41.2 38.6 36.6 36.8 33.2 29.6 15.8 41.2 DAY 30 12 31 20 23 19 4 28 15 2 1 27 24 HOUR MAXIMUM PRECIPITATION IN MM. 10.0 22.9 8.0 17.5 4.7 4.0 0.0 0.0 0.0 0.0 3.0 1.0 22.9 DAY 4 5 9 27 8 4 ** ** ** ** 29 3 MONTHLY TOTAL PRECIPITATION IN MM. 39.9 82.0 25.7 38.9 8.8 4.0 0.0 0.0 0.0 0.0 7.5 1.0 207.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 71.0 24.9 0.0 4.1 NO. OF DAYS WITH PRECIPITATION. 8 13 9 9 5 1 0 0 0 0 6 1 52 NO. OF DAYS PRECIPITATION EQUAL 8 11 6 6 2 1 0 0 0 0 3 1 38 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 3 0 1 0 0 0 0 0 0 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 86 91 72 62 52 35 36 36 37 42 63 68 57 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 64 65 42 33 25 19 18 19 19 20 36 43 34 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 78 70 50 38 25 19 18 19 22 27 45 55 39 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 11 0 0 0 0 0 0 0 0 0 0 2 13 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 4 12 16 5 0 0 0 0 37 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 2 0 0 0 0 0 0 0 0 0 0 0 2 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 3 14 29 31 30 23 2 0 0 132 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 0 0 0 0 0 0 2 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 23 6 4 0 0 0 0 0 0 0 8 15 56 DATE OF START AND END FREEZING START = 15 NOV. END = 24 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.4 5.6 13.1 17.8 23.9 28.6 29.2 28.6 19.6 16.3 14.5 4.9 17.3 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.2 -0.6 6.9 11.3 17.4 22.0 21.9 21.2 12.4 9.8 8.5 -0.5 10.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.6 11.8 19.2 24.3 30.4 35.2 36.4 35.9 26.9 22.7 20.6 10.3 23.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.4 12.4 12.3 13.0 13.0 13.2 14.5 14.7 14.5 12.9 12.1 10.8 12.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.25 2.84 5.27 5.66 7.15 7.00 7.51 6.87 3.43 4.54 4.93 3.32 5.15 MEAN OF MIXING RATIO AT 09 GMT. 3.76 3.00 5.46 5.32 6.31 7.40 7.93 7.43 4.32 5.50 5.28 3.63 5.44 MEAN OF MIXING RATIO AT 15 GMT. 4.19 3.17 5.44 5.34 6.34 7.24 7.91 7.24 4.26 5.13 5.37 3.45 5.42 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.2 -6.4 0.6 -0.4 10.0 17.6 18.6 17.4 8.4 2.8 3.4 -7.6 -7.6 DAY 12 5 3 6 7 1 13 19 17 26 29 9 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.8 18.4 26.2 36.2 35.2 41.0 39.2 40.4 32.4 29.2 27.6 22.4 41.0 DAY 5 1 31 26 16 17 7 2 1 1 5 20 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.0 1.0 13.0 12.0 10.1 0.0 0.0 0.0 0.0 0.9 9.0 3.0 13.0 DAY 25 25 13 19 7 ** ** ** ** 16 18 4 MONTHLY TOTAL PRECIPITATION IN MM. 8.1 1.1 38.6 14.0 14.3 0.0 0.0 0.0 0.0 0.9 10.7 3.1 90.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 52.6 31.2 0.0 16.2 NO. OF DAYS WITH PRECIPITATION. 4 2 9 2 5 0 0 0 0 1 4 2 29 NO. OF DAYS PRECIPITATION EQUAL 2 1 6 2 3 0 0 0 0 0 2 1 17 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 2 1 1 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 64 71 55 46 33 35 35 32 50 59 72 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 46 37 43 29 23 21 21 20 20 31 34 43 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 58 39 46 30 24 21 20 20 21 33 43 49 34 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 4 6 0 0 0 0 0 0 0 0 0 10 20 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 2 2 19 21 15 0 0 0 0 59 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 6 19 30 31 31 5 0 0 0 122 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 0 2 0 0 0 0 3 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 14 15 0 2 0 0 0 0 0 0 0 20 51 DATE OF START AND END FREEZING START = 6 DEC. END = 6 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.7 7.3 10.8 17.3 21.9 27.6 31.0 28.6 23.2 16.9 12.5 3.9 17.2 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.2 2.0 4.9 11.5 15.5 20.7 24.0 20.8 15.1 9.4 5.3 -0.3 10.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.3 12.6 16.6 23.2 28.3 34.6 38.1 36.3 31.4 24.5 19.8 8.0 23.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.1 10.6 11.7 11.7 12.8 13.9 14.1 15.5 16.3 15.1 14.5 8.3 13.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.64 4.26 4.92 6.89 6.05 7.07 7.87 6.20 4.70 3.60 2.67 3.80 5.14 MEAN OF MIXING RATIO AT 09 GMT. 4.06 4.58 4.84 6.62 4.85 6.27 7.02 5.71 4.46 4.44 3.16 4.21 5.02 MEAN OF MIXING RATIO AT 15 GMT. 4.05 4.39 4.62 6.81 5.07 6.21 6.88 6.05 4.63 4.01 3.29 4.36 5.03 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.0 -4.8 -3.0 6.0 10.0 16.2 17.4 16.8 9.2 -1.2 -4.6 -4.6 -4.8 DAY 10 19 7 8 27 1 26 26 23 20 29 11 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 20.4 26.0 30.0 34.6 41.4 41.8 39.6 37.4 33.7 26.8 14.6 41.8 DAY 30 5 26 4 6 30 16 23 20 12 11 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 15.0 21.0 17.0 46.8 3.0 0.0 0.0 0.0 3.0 0.0 0.0 4.0 46.8 DAY 1 6 22 25 1 ** ** ** 22 ** ** 26 MONTHLY TOTAL PRECIPITATION IN MM. 15.2 33.8 34.9 78.7 3.0 0.0 0.0 0.0 3.0 0.0 0.0 17.8 186.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 45.0 43.8 1.6 9.5 NO. OF DAYS WITH PRECIPITATION. 2 8 7 8 1 0 0 0 1 0 0 11 38 NO. OF DAYS PRECIPITATION EQUAL 1 5 5 6 1 0 0 0 1 0 0 7 26 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 1 2 0 0 0 0 0 0 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 80 75 68 42 35 32 32 36 41 40 87 54 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 49 50 42 40 19 18 17 15 17 26 21 62 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 55 53 43 44 21 18 16 16 18 25 29 69 34 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 1 1 0 0 0 0 0 0 0 0 2 1 5 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 1 12 28 14 0 0 0 0 55 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 1 7 29 31 31 21 5 0 0 125 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 7 0 0 0 0 0 8 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 16 9 7 0 0 0 0 0 0 2 4 18 56 DATE OF START AND END FREEZING START = 19 OCT. END = 9 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 2.6 7.0 9.9 17.4 22.7 28.0 28.3 26.9 26.0 17.4 9.6 6.8 16.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.7 1.5 5.3 11.1 16.1 21.2 21.4 19.4 17.7 10.1 2.9 0.7 10.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.9 12.5 14.4 23.7 29.3 34.9 35.1 34.3 34.3 24.8 16.3 12.8 23.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.6 11.0 9.1 12.6 13.2 13.7 13.7 14.9 16.6 14.7 13.4 12.1 13.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.11 4.10 5.58 5.59 5.85 6.17 5.98 4.49 4.98 3.99 3.11 3.14 4.68 MEAN OF MIXING RATIO AT 09 GMT. 3.03 3.95 5.45 4.86 5.07 6.20 5.74 4.65 6.14 4.52 3.52 3.66 4.73 MEAN OF MIXING RATIO AT 15 GMT. 2.99 4.28 5.44 4.99 5.39 6.01 5.86 4.91 5.99 4.50 3.69 3.90 4.83 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.0 -3.2 0.2 0.6 9.6 13.4 18.6 10.2 10.6 4.0 -3.6 -7.6 -11.0 DAY 14 15 21 7 3 17 15 31 1 21 14 7 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.6 22.8 24.0 30.4 37.6 40.8 38.2 39.0 40.6 33.0 22.4 17.4 40.8 DAY 7 11 26 13 31 5 8 27 9 14 7 29 24 HOUR MAXIMUM PRECIPITATION IN MM. 2.0 18.0 10.1 9.0 6.0 2.0 0.0 0.0 0.0 1.2 2.0 8.0 18.0 DAY 18 22 8 16 22 11 ** ** ** 18 13 16 MONTHLY TOTAL PRECIPITATION IN MM. 4.7 38.0 53.8 11.1 10.4 2.0 0.0 0.0 0.0 2.7 2.2 9.0 133.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 72.1 17.6 0.0 10.4 NO. OF DAYS WITH PRECIPITATION. 4 10 15 3 3 1 0 0 0 4 2 2 44 NO. OF DAYS PRECIPITATION EQUAL 2 9 14 2 3 1 0 0 0 2 1 2 36 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 1 0 0 0 0 0 0 0 0 0 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 82 85 55 39 29 28 25 33 42 56 63 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 45 47 55 27 20 18 16 14 18 25 30 39 30 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 49 55 58 30 22 18 16 15 20 27 38 50 33 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 12 0 0 0 0 0 0 0 0 0 0 4 16 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 1 1 18 18 9 3 0 0 0 50 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 1 0 0 0 0 0 0 0 0 0 0 0 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 2 13 28 31 29 27 1 0 0 131 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 4 0 0 1 0 0 0 5 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 22 11 0 0 0 0 0 0 0 0 8 13 54 DATE OF START AND END FREEZING START = 13 NOV. END = 28 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 5.8 5.6 10.0 17.1 22.5 29.0 30.3 27.6 24.2 19.5 10.1 6.0 17.3 AVERAGE OF MINIMUM TEMPERATURE IN C. 0.5 -1.1 4.3 11.1 15.9 22.4 23.0 19.7 16.5 12.5 4.9 1.9 11.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.1 12.3 15.7 23.1 29.2 35.5 37.7 35.5 32.0 26.4 15.2 10.1 23.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.6 13.4 11.4 12.0 13.3 13.1 14.7 15.8 15.5 13.9 10.3 8.2 12.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.22 2.52 4.10 6.17 6.29 7.56 6.67 5.40 3.86 4.60 5.17 4.67 5.02 MEAN OF MIXING RATIO AT 09 GMT. 3.54 2.81 4.31 5.61 5.58 6.45 5.79 4.90 4.11 4.90 5.36 5.60 4.91 MEAN OF MIXING RATIO AT 15 GMT. 3.63 2.66 4.19 5.58 5.53 6.29 5.62 4.70 4.02 5.01 5.64 5.65 4.88 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -3.6 -7.4 -2.2 3.4 8.6 17.4 19.2 13.4 12.0 7.0 -2.4 -3.6 -7.4 DAY 30 8 9 14 7 30 1 27 10 21 26 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.6 23.2 24.8 28.6 36.0 40.0 41.0 40.6 39.4 34.0 23.4 16.8 41.0 DAY 1 23 24 10 28 16 19 15 3 3 5 10 24 HOUR MAXIMUM PRECIPITATION IN MM. 12.4 0.0 7.6 5.0 10.0 0.0 0.0 0.0 0.0 10.0 13.0 10.2 13.0 DAY 17 ** 26 21 6 ** ** ** ** 31 13 18 MONTHLY TOTAL PRECIPITATION IN MM. 19.6 0.0 24.8 13.0 10.0 0.0 0.0 0.0 0.0 15.5 33.2 32.1 148.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 30.0 15.5 0.0 54.5 NO. OF DAYS WITH PRECIPITATION. 2 0 11 9 1 0 0 0 0 5 6 8 42 NO. OF DAYS PRECIPITATION EQUAL 2 0 6 5 1 0 0 0 0 4 4 5 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 0 0 1 0 0 0 0 1 2 1 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 69 60 65 59 43 34 28 29 27 44 80 89 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 44 32 42 32 22 18 15 14 14 25 48 69 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 50 34 44 34 24 18 14 13 15 30 58 78 34 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 8 0 0 0 0 0 0 0 0 0 0 8 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 2 26 23 14 3 0 0 0 68 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 13 30 31 30 21 8 0 0 133 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 3 1 0 0 0 0 5 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 15 17 4 0 0 0 0 0 0 0 2 8 46 DATE OF START AND END FREEZING START = 26 NOV. END = 12 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 3.9 5.9 11.9 19.2 22.7 26.6 30.0 28.5 24.3 18.2 13.5 9.3 17.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.1 0.9 6.1 12.5 16.1 19.7 23.2 21.6 16.6 10.3 6.0 2.6 11.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.9 10.9 17.7 25.9 29.4 33.6 36.8 35.4 32.0 26.1 20.9 15.9 24.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 8.0 10.0 11.6 13.4 13.3 13.9 13.6 13.8 15.4 15.8 14.9 13.3 13.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.99 4.13 5.11 7.32 7.58 6.79 7.12 7.09 4.56 3.73 3.40 3.20 5.33 MEAN OF MIXING RATIO AT 09 GMT. 4.51 4.35 5.28 7.04 7.52 6.91 8.29 8.13 5.81 4.88 4.05 3.82 5.88 MEAN OF MIXING RATIO AT 15 GMT. 4.78 4.55 5.48 7.28 6.76 6.75 7.87 7.84 5.69 4.67 4.53 4.14 5.86 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -4.6 -4.6 -1.6 4.4 7.0 16.2 19.4 17.6 12.2 4.6 1.8 -0.6 -4.6 DAY 15 18 1 8 4 13 26 27 17 10 25 26 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.4 24.2 29.0 34.2 36.4 38.0 43.4 40.0 38.4 34.2 25.4 24.0 43.4 DAY 26 8 30 18 15 29 6 18 6 2 4 12 24 HOUR MAXIMUM PRECIPITATION IN MM. 10.0 13.0 10.0 38.0 11.0 0.0 0.0 0.4 0.0 0.1 0.0 0.4 38.0 DAY 3 11 2 7 2 ** ** 8 ** 13 ** 5 MONTHLY TOTAL PRECIPITATION IN MM. 28.7 56.6 24.0 62.0 17.9 0.0 0.0 0.4 0.0 0.1 0.0 0.4 190.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 57.5 42.0 0.2 0.3 NO. OF DAYS WITH PRECIPITATION. 10 9 5 6 5 0 0 1 0 1 0 1 38 NO. OF DAYS PRECIPITATION EQUAL 7 6 5 6 3 0 0 0 0 0 0 0 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 3 1 2 1 0 0 0 0 0 0 0 8 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 88 84 73 66 51 34 31 35 31 40 50 58 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 66 56 45 34 29 21 22 22 19 23 26 34 33 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 76 62 50 40 28 20 20 22 20 26 38 47 37 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 2 1 0 0 0 0 0 0 0 0 0 0 3 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 1 3 10 22 19 6 0 0 0 61 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 8 18 29 31 31 23 8 0 0 148 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 7 1 0 0 0 0 8 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 17 13 4 0 0 0 0 0 0 0 0 5 39 DATE OF START AND END FREEZING START = 6 DEC. END = 5 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.3 9.8 10.6 17.5 23.4 29.2 28.9 28.0 23.7 19.0 10.5 7.1 17.7 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.2 4.1 5.8 11.1 16.4 21.8 22.4 20.3 15.8 11.1 5.3 0.8 11.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.8 15.5 15.3 24.0 30.5 36.7 35.3 35.8 31.6 26.8 15.6 13.3 24.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.0 11.4 9.5 12.9 14.1 14.9 12.9 15.5 15.8 15.7 10.3 12.5 12.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.89 4.58 5.49 5.67 5.69 5.77 7.42 6.08 5.22 4.27 4.74 3.23 5.17 MEAN OF MIXING RATIO AT 09 GMT. 4.16 4.60 5.22 4.45 4.96 5.24 6.71 6.35 5.21 4.94 4.93 3.55 5.03 MEAN OF MIXING RATIO AT 15 GMT. 4.55 5.01 5.33 4.69 4.43 4.88 6.33 6.65 5.49 5.52 5.22 3.84 5.16 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.2 -1.8 0.4 5.6 11.6 18.0 17.2 16.6 9.0 5.4 -0.4 -3.4 -11.2 DAY 3 2 7 13 12 20 14 13 30 27 30 1 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.2 21.6 24.6 29.6 37.0 41.8 40.8 38.6 38.0 32.0 24.4 18.0 41.8 DAY 1 20 27 30 14 26 8 30 14 12 1 31 24 HOUR MAXIMUM PRECIPITATION IN MM. 24.0 10.0 21.0 10.0 0.0 0.0 0.0 0.0 0.1 0.0 8.0 3.0 24.0 DAY 19 6 15 11 ** ** ** ** 28 ** 12 18 MONTHLY TOTAL PRECIPITATION IN MM. 61.1 22.6 97.3 18.1 0.0 0.0 0.0 0.0 0.1 0.0 13.9 3.0 216.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 83.8 8.4 0.0 7.8 NO. OF DAYS WITH PRECIPITATION. 11 8 12 4 0 0 0 0 1 0 6 1 43 NO. OF DAYS PRECIPITATION EQUAL 9 6 12 3 0 0 0 0 0 0 3 1 34 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 6 1 0 0 0 0 0 0 0 0 10 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 83 75 81 58 38 27 34 32 38 45 74 68 54 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 57 42 50 24 18 14 20 17 18 23 44 36 30 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 52 55 28 17 13 18 18 21 30 54 49 36 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 4 0 0 0 0 0 0 0 0 0 0 0 4 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 3 19 21 11 1 0 0 0 55 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 18 30 30 31 22 5 0 0 136 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 7 1 0 0 0 0 0 8 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 15 4 0 0 0 0 0 0 0 0 1 13 33 DATE OF START AND END FREEZING START = 30 NOV. END = 23 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPERATURE IN C. 4.6 6.4 11.4 21.9 27.1 26.8 27.7 26.9 24.8 17.8 9.5 6.3 17.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -0.7 0.5 4.5 14.4 19.5 19.7 20.4 19.1 17.3 10.8 4.1 1.8 11.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.0 12.2 18.2 29.5 34.7 34.0 34.9 34.7 32.3 24.9 14.9 10.8 24.3 DIFFERENCE BETWEEN AVERAGE MAXIMUM 10.7 11.7 13.7 15.1 15.2 14.3 14.5 15.6 15.0 14.1 10.8 9.0 13.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.05 3.57 3.35 4.50 4.86 5.44 6.47 5.48 5.20 4.97 3.99 4.47 4.61 MEAN OF MIXING RATIO AT 09 GMT. 3.07 3.64 3.23 4.36 4.74 5.13 5.95 5.57 5.57 5.23 4.13 5.02 4.64 MEAN OF MIXING RATIO AT 15 GMT. 3.38 3.80 3.50 4.45 4.50 5.05 5.90 5.94 6.02 5.71 4.23 5.30 4.82 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.2 -5.2 -2.0 6.2 15.0 12.0 16.4 15.8 13.0 8.2 -3.4 -1.8 -8.2 DAY 13 9 4 3 14 14 19 22 27 9 18 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 19.6 20.0 29.0 35.0 40.2 39.4 37.6 37.4 36.6 29.8 24.2 14.6 40.2 DAY 7 25 24 11 27 24 11 1 1 1 4 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.0 5.0 3.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0 5.2 20.0 20.0 DAY 30 28 3 ** ** ** ** ** ** 2 10 16 MONTHLY TOTAL PRECIPITATION IN MM. 16.3 12.3 3.4 0.0 0.0 0.0 0.0 0.0 0.0 12.1 10.2 45.0 99.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 32.2 0.0 0.0 67.8 NO. OF DAYS WITH PRECIPITATION. 6 5 2 0 0 0 0 0 0 4 5 7 29 NO. OF DAYS PRECIPITATION EQUAL 4 3 1 0 0 0 0 0 0 2 2 3 15 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 0 0 0 0 0 1 0 2 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 69 75 55 35 26 28 32 31 36 52 67 85 49 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 41 42 26 16 14 16 17 16 18 27 39 60 28 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 50 48 30 18 14 15 16 17 22 34 47 72 32 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 5 1 0 0 0 0 0 0 0 0 0 0 6 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 1 9 12 16 6 3 0 0 0 47 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 16 31 25 31 31 25 0 0 0 159 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 0 0 0 0 0 0 0 1 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 17 14 6 0 0 0 0 0 0 0 5 6 48 DATE OF START AND END FREEZING START = 12 NOV. END = 17 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE PERIOD 1961 TO 2000 PAGE 1 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE OF MEAN DAILY TEMPE. IN C. 3.4 5.9 10.8 16.9 22.7 26.9 28.1 26.4 22.8 17.4 11.2 5.8 16.5 SD OF MEAN DAILY TEMPERATURE IN C. 2.18 2.53 1.90 1.80 1.51 1.56 1.43 1.38 1.55 1.95 2.90 2.33 1.92 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.8 -0.7 3.9 9.1 14.4 17.9 19.2 17.4 13.5 8.6 3.3 -0.9 8.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.6 12.5 17.8 24.7 31.1 35.9 37.0 35.6 32.1 26.2 19.1 12.6 24.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.4 13.2 13.9 15.6 16.7 18.0 17.9 18.3 18.7 17.6 15.8 13.4 16.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.43 3.87 4.93 6.43 7.71 8.40 9.15 8.13 6.47 5.21 4.22 3.73 5.97 MEAN OF MIXING RATIO AT 09 GMT. 4.46 4.91 5.91 7.09 8.16 9.29 10.51 9.37 7.58 6.38 5.31 4.90 6.98 MEAN OF MIXING RATIO AT 15 GMT. 4.06 4.43 5.53 6.59 7.48 8.13 9.40 8.56 7.14 6.07 5.07 4.57 6.41 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -20.0 -20.0 -10.0 -3.0 2.4 6.0 8.0 7.0 2.0 -6.0 -9.0 -19.0 -20.0 YEAR - DAY 64- 4 72- 1 61- 5 67- 2 89- 2 64- 9 77-17 77-31 77- 8 77-26 77-29 64-30 64- 4 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 21.0 25.5 35.0 37.0 40.2 46.0 47.0 42.0 40.6 38.0 39.0 25.6 47.0 YEAR - DAY 66-31 85-26 77-24 78-24 0-27 80-10 75-12 74-23 96- 9 63-12 63- 8 87-24 75-12 24 HOUR MAXIMUM PRECIPITATION IN MM. 24.5 36.0 28.0 46.8 40.0 4.0 8.0 0.4 3.0 13.0 25.2 30.5 46.8 YEAR - DAY 69-11 81-12 62-16 95-25 63-11 93- 4 88-11 98- 8 95-22 87-27 69- 4 77-24 95-25 MONTHLY TOTAL PRECIPITATION IN MM. 23.5 27.2 31.8 31.2 8.0 0.2 0.4 0.0 0.1 2.4 7.3 16.5 148.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 55.6 26.6 0.2 17.6 NO. OF DAYS WITH PRECIPITATION. 6 6 6 5 2 0 0 0 0 1 2 4 32 NO. OF DAYS PRECIPITATION EQUAL 5 5 5 4 2 0 0 0 0 1 1 3 26 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 1 1 0 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 76 71 62 49 39 39 40 42 50 60 72 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 60 56 48 38 29 25 26 25 25 31 40 55 38 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 68 63 56 46 35 27 28 28 30 39 50 64 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 11 6 1 0 0 0 0 0 0 0 2 7 27 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 1 8 10 5 1 0 0 0 25 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 5 20 29 31 30 23 7 1 0 146 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 4 2 0 0 0 0 9 OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 0 0 OR MORE THAN 45 NUMBER OF FREEZING DAYS. 23 16 5 0 0 0 0 0 0 1 8 18 71 DATE OF START AND END FREEZING START = 13 OCT. END = 10 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION GONABAD LATITUDE 34 21 N DATA PROCESSING CENTER LONGITUDE 58 42 E ELEVATION 1150 MET. MEAN AND EXTREMES FOR THE PERIOD 1961 TO 2000 PAGE 2 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AVERAGE DRY BULB TEMPERATURE. IN C. 4.0 6.3 11.4 17.9 24.5 29.7 31.1 29.2 25.0 18.6 12.1 6.4 18.0 AVERAGE DEW POINT TEMPERATURE. IN C. -2.1 -0.6 2.2 5.2 7.4 8.9 10.7 9.0 5.9 3.3 0.6 -0.7 4.2 AVERAGE OF MIXING RATIO IN G/KG 3.97 4.39 5.46 6.69 7.78 8.60 9.69 8.71 7.06 5.89 4.86 4.40 6.46 AVERAGE OF VAPOUR PRESSURE HPA 5.59 6.18 7.68 9.43 10.96 12.13 13.64 12.29 9.96 8.31 6.85 6.19 9.10 AVERAGE OF SATURATION DEFICIT IN HPA 3.02 4.07 6.77 12.63 21.55 31.13 32.87 29.89 23.54 14.80 8.48 4.07 16.07 AVERAGE RELATIVE HUMIDITY IN PERCENT 68 65 58 49 38 30 31 31 32 40 50 64 46 AVERAGE OF MAXIMUM RELATIVE HUMIDITY(%) 80 79 74 64 51 40 39 40 43 52 62 76 58 AVERAGE OF MINIMUM RELATIVE HUMIDITY(%) 56 53 45 36 27 22 24 24 24 29 38 52 36 NO. OF DAYS PRECIPITATION EQUAL 2 2 2 2 1 0 0 0 0 0 0 1 10 OR MORE THAN 5 MM.