IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 1 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF MEAN DAILY TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. MAX-MIN 1961 1.7 3.5 8.5 11.4 19.4 22.8 26.0 23.6 22.2 14.4 7.8 3.8 24.3 1962 2.0 6.9 11.5 12.6 19.0 23.7 25.4 24.1 20.2 15.8 7.3 4.3 23.4 1963 5.6 7.4 8.7 13.9 17.2 25.1 25.3 25.4 21.5 12.9 5.9 0.2 25.2 1964 -6.0 8.7 14.0 14.1 22.3 25.5 28.4 26.0 20.3 13.0 5.7 -3.2 34.4 1965 -2.1 7.5 9.5 13.3 22.2 26.6 27.3 24.5 18.5 12.6 10.0 7.4 29.4 1966 8.1 7.5 10.7 14.0 19.4 25.1 26.8 24.5 17.9 15.1 9.7 4.8 22.0 1967 2.0 3.5 7.1 10.9 17.8 23.6 28.3 26.6 18.9 13.3 6.4 1.1 27.2 1968 0.1 2.4 8.2 13.1 19.5 24.9 27.9 26.7 20.0 15.1 9.2 5.4 27.8 1969 -0.5 4.8 12.3 14.0 20.1 25.0 27.8 25.4 19.9 17.6 6.5 5.9 28.3 1970 2.3 6.2 9.8 16.1 20.4 25.3 27.0 26.8 21.3 15.4 11.0 2.9 24.7 1971 2.3 3.6 10.0 12.0 20.2 24.5 27.8 27.3 20.3 13.9 9.9 3.7 25.5 1972 -0.8 -1.4 7.1 14.3 17.6 25.8 29.3 25.4 20.0 15.7 8.3 0.5 30.7 1973 -1.0 6.1 10.6 15.9 21.0 25.9 30.0 26.7 20.9 12.0 6.6 2.6 31.0 1974 -1.9 -1.7 6.8 15.4 20.9 24.2 26.9 26.4 21.1 12.3 5.5 1.5 28.8 1975 1.0 3.2 6.7 12.5 19.2 25.2 29.4 25.4 20.0 14.4 9.0 1.5 28.4 1976 1.1 1.9 4.3 12.3 20.1 23.8 26.9 25.3 21.1 12.8 6.5 3.5 25.8 1977 -0.9 6.8 11.5 13.8 19.5 25.8 29.6 24.8 22.1 14.8 8.5 5.3 30.5 1978 1.7 5.7 8.5 15.0 19.7 24.1 25.5 25.9 22.1 16.8 7.3 6.2 24.2 1979 3.8 6.7 8.3 16.1 17.9 23.7 27.3 23.3 21.7 17.6 9.6 3.7 23.6 1980 2.7 3.3 8.9 15.6 21.0 25.4 26.0 26.3 22.3 17.1 10.9 5.4 23.6 1981 3.3 5.5 11.1 15.3 19.4 23.5 26.2 25.5 20.9 14.6 10.7 6.8 22.9 1982 3.1 2.4 7.4 16.3 21.3 25.7 26.0 26.4 22.4 15.2 7.7 1.9 24.5 1983 1.1 3.9 ****** 13.0 20.3 ****** ****** 28.1 ****** 15.2 11.2 4.9 ****** 1984 3.3 3.8 10.3 15.4 17.1 25.2 26.1 28.1 22.9 14.7 10.2 2.2 25.9 1985 5.6 5.7 ****** 16.3 20.2 26.5 28.8 25.1 23.9 16.8 11.1 4.9 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 5.7 7.0 8.8 15.0 21.9 25.8 27.0 26.8 23.9 14.2 10.6 4.8 22.2 1988 2.4 4.3 10.6 15.4 21.2 24.9 28.6 27.3 23.5 17.8 10.6 6.3 26.2 1989 ****** 3.0 9.6 15.2 20.3 26.5 28.5 27.0 23.1 18.2 10.0 6.5 ****** 1990 ****** ****** ****** 15.1 21.7 26.8 28.5 28.8 24.6 17.4 12.5 6.4 ****** 1991 4.4 4.1 9.6 16.2 20.5 25.7 28.7 27.3 23.4 16.4 11.1 4.9 24.6 1992 -0.5 3.5 6.3 13.9 18.0 24.5 28.4 25.7 21.3 16.6 11.4 5.5 28.9 1993 1.7 5.6 8.3 15.1 19.3 25.4 27.9 ****** 21.6 15.8 10.4 7.2 ****** 1994 5.6 6.0 10.6 16.4 20.0 25.6 29.7 29.2 20.7 16.2 11.6 4.2 25.5 1995 7.0 ****** 10.7 15.4 19.8 24.2 29.6 28.0 23.6 16.8 11.8 3.1 ****** 1996 0.8 7.9 8.8 15.0 21.1 25.4 ****** 27.2 25.0 ****** 10.6 7.5 ****** 1997 5.9 5.9 8.1 14.8 20.2 25.9 30.9 28.4 24.1 19.4 10.6 5.6 25.3 1998 3.8 7.1 11.2 16.6 20.9 25.9 29.1 28.2 24.7 18.1 13.7 10.2 25.3 1999 5.3 8.9 10.0 16.3 22.5 27.4 28.6 26.4 25.5 19.7 10.4 5.6 23.3 2000 5.3 6.6 10.1 19.8 25.0 27.0 29.5 28.2 25.8 18.8 10.4 5.3 24.2 MEAN 2.3 5.0 9.3 14.7 20.1 25.2 27.9 26.4 21.9 15.6 9.4 4.4 25.6 SD 2.92 2.44 1.91 1.70 1.58 1.06 1.44 1.45 1.95 2.02 2.05 2.47 1.92 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 2 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 -4.7 -3.3 1.8 5.4 11.2 14.0 16.9 14.4 12.3 5.5 0.4 -3.4 5.9 1962 -4.4 -0.7 2.9 4.2 10.4 14.8 16.6 15.2 10.3 6.9 -0.7 -2.9 6.1 1963 -1.9 0.4 0.9 5.8 8.9 14.6 15.0 14.8 11.2 5.2 0.2 -7.0 5.7 1964 -12.7 2.1 8.8 6.8 13.5 16.8 19.3 17.2 12.1 3.8 -1.1 -10.6 6.3 1965 -9.3 1.4 2.7 6.0 12.9 17.7 17.3 14.8 7.3 5.1 3.1 -0.1 6.6 1966 3.5 0.9 3.6 7.8 11.5 16.3 16.9 15.4 7.3 7.9 2.3 -3.2 7.5 1967 -4.1 -3.9 -0.7 3.2 9.9 15.0 20.5 18.6 11.4 5.2 -0.0 -6.6 5.7 1968 -8.1 -3.6 0.9 7.4 11.8 17.2 20.3 19.4 11.9 8.1 2.8 -0.8 7.3 1969 -6.6 -1.3 4.2 6.3 11.8 16.8 19.7 17.0 9.5 8.6 -1.7 -2.2 6.8 1970 -3.7 -0.9 2.5 7.6 11.9 15.6 18.8 17.4 12.4 5.5 2.1 -3.8 7.1 1971 -4.9 -3.3 2.1 4.8 12.4 15.5 19.4 19.8 11.4 4.4 3.4 -3.2 6.8 1972 -7.2 -7.2 1.8 7.8 11.2 19.0 22.3 18.3 10.7 6.3 -0.4 -5.8 6.4 1973 -8.7 -0.5 3.9 8.4 13.6 17.6 23.0 20.1 15.0 6.7 0.4 -3.6 8.0 1974 -7.7 -7.3 1.2 10.5 15.2 18.7 19.5 19.7 14.8 6.1 0.1 -5.5 7.1 1975 -5.9 -3.6 0.5 5.6 12.0 17.7 22.0 18.3 10.6 5.2 2.7 -4.9 6.7 1976 -5.3 -4.1 -0.8 7.9 15.0 18.5 19.4 17.7 14.8 6.9 1.9 -1.8 7.5 1977 -7.3 -2.3 3.2 6.2 11.1 17.2 21.1 18.1 15.6 7.9 1.5 -1.1 7.6 1978 -5.1 -0.7 2.1 6.2 10.8 14.8 16.4 17.0 11.7 7.3 0.3 -0.7 6.7 1979 -3.3 -1.1 1.1 7.8 10.1 14.8 17.9 13.5 11.9 8.3 -0.4 -3.2 6.5 1980 -5.3 -3.5 1.4 7.9 12.9 16.0 17.2 17.8 14.6 9.5 4.7 -0.7 7.7 1981 -3.4 -1.1 3.3 7.1 11.1 15.3 18.0 16.4 11.5 6.4 2.1 -0.8 7.2 1982 -3.2 -4.7 0.4 7.9 13.3 16.4 16.9 16.8 13.0 8.0 0.4 -5.1 6.7 1983 -5.5 -3.5 ****** 5.3 12.5 ****** ****** 18.5 ****** 4.9 1.5 -2.6 ****** 1984 -4.4 -4.2 3.1 7.3 9.1 16.0 16.9 18.8 13.4 5.2 2.6 -4.2 6.6 1985 -2.8 -2.2 ****** 7.8 11.4 17.4 20.1 16.3 13.8 7.0 3.3 -1.8 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 -3.0 -2.0 1.0 6.4 13.0 16.6 18.1 17.7 14.6 7.6 3.0 -2.8 7.5 1988 -4.2 -2.2 3.3 7.5 12.6 15.4 19.6 18.4 13.8 8.4 2.1 -1.4 7.8 1989 ****** -4.5 2.5 7.6 12.0 17.1 19.7 17.9 13.6 9.1 2.9 -0.5 ****** 1990 ****** ****** ****** 7.0 12.9 17.6 20.4 19.9 14.8 8.5 3.4 -2.0 ****** 1991 -2.3 -3.6 2.6 8.0 12.0 16.7 19.7 18.0 13.5 8.2 3.1 -0.9 7.9 1992 -6.9 -3.4 -0.5 6.4 10.5 16.2 19.9 17.0 11.7 7.2 3.3 -1.5 6.7 1993 -4.4 -1.0 2.1 7.8 11.9 16.4 19.4 ****** 12.1 7.0 3.0 -0.6 ****** 1994 -1.4 -1.4 2.9 8.2 11.1 16.4 20.7 19.9 11.5 8.3 4.5 -3.0 8.1 1995 -1.1 ****** 3.2 8.0 12.1 16.0 20.5 18.4 14.3 7.6 2.5 -2.3 ****** 1996 -5.5 1.1 2.5 7.6 13.2 16.8 18.5 18.5 15.9 8.0 2.9 -0.5 8.2 1997 -1.4 -2.6 0.7 7.0 12.0 17.3 22.0 18.6 14.3 10.3 3.6 -1.8 8.3 1998 -3.1 0.4 4.0 8.5 12.8 17.0 20.7 19.6 15.2 8.7 4.3 1.3 9.1 1999 -1.1 0.8 3.3 8.0 13.4 17.9 20.0 16.2 15.3 9.6 3.4 -1.8 8.7 2000 -2.7 -1.0 2.9 11.3 16.4 19.1 21.0 19.3 16.7 10.0 3.1 -0.6 9.6 MEAN -4.6 -2.1 2.3 7.1 12.1 16.6 19.3 17.7 12.8 7.2 2.0 -2.7 7.3 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 3 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF MAXIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 8.1 10.4 15.2 17.5 27.5 31.6 35.1 32.8 32.0 23.3 15.0 11.1 21.6 1962 8.4 14.6 20.1 21.0 27.5 32.5 34.2 32.9 30.1 24.8 15.3 11.5 22.7 1963 13.0 14.4 16.4 22.0 25.5 35.6 35.6 35.8 31.9 20.7 11.6 7.3 22.5 1964 0.7 15.3 19.2 21.4 31.1 34.1 37.5 34.7 28.5 22.2 12.6 4.3 21.8 1965 5.1 13.6 16.4 20.5 31.4 35.5 37.3 34.1 29.8 20.1 16.9 15.0 23.0 1966 12.8 14.1 17.9 20.1 27.3 33.9 36.7 33.7 28.5 22.2 17.2 12.7 23.1 1967 8.0 10.9 15.0 18.5 25.7 32.3 36.2 34.5 26.3 21.3 12.8 8.8 20.9 1968 8.3 8.3 15.5 18.9 27.1 32.5 35.5 34.0 28.2 22.1 15.6 11.6 21.5 1969 5.5 11.0 20.3 21.6 28.4 33.2 35.8 33.9 30.2 26.6 14.8 14.1 22.9 1970 8.2 13.3 17.3 24.6 29.0 35.1 35.2 36.3 30.3 25.3 19.9 9.7 23.7 1971 9.6 10.4 17.9 19.3 28.1 33.5 36.1 34.8 29.3 23.5 16.4 10.7 22.5 1972 5.7 4.4 12.3 20.9 24.0 32.7 36.2 32.4 29.3 25.0 16.9 6.9 20.6 1973 6.6 12.7 17.4 23.4 28.3 34.1 37.0 33.4 26.9 17.2 12.8 8.9 21.6 1974 3.9 4.0 12.3 20.3 26.5 29.7 34.4 33.0 27.4 18.5 10.9 8.6 19.1 1975 7.9 10.0 12.8 19.4 26.4 32.6 36.7 32.4 29.3 23.6 15.3 7.8 21.2 1976 7.4 7.9 9.4 16.8 25.2 29.0 34.4 33.0 27.3 18.6 11.0 8.9 19.1 1977 5.6 15.9 19.8 21.4 27.8 34.3 38.2 31.4 28.5 21.6 15.5 11.7 22.6 1978 8.5 12.2 15.0 23.7 28.6 33.4 34.6 34.8 32.5 26.3 14.3 13.1 23.1 1979 10.9 14.5 15.4 24.4 25.7 32.7 36.6 33.0 31.5 26.9 19.5 10.7 23.5 1980 10.8 10.0 16.4 23.3 29.2 34.7 34.9 34.8 30.1 24.6 17.1 11.6 23.1 1981 9.7 12.1 18.6 23.0 27.6 31.7 34.4 34.6 30.2 22.8 19.3 14.4 23.2 1982 9.4 9.5 14.4 24.7 29.2 35.0 35.1 36.0 31.8 22.4 15.1 8.8 22.6 1983 7.9 11.5 ****** 20.7 28.2 ****** ****** 37.5 ****** 25.6 20.9 12.1 ****** 1984 10.9 11.7 17.4 23.6 25.1 34.3 35.3 37.4 32.4 24.2 17.9 8.8 23.2 1985 14.0 13.6 ****** 24.8 29.1 35.8 37.5 33.9 33.9 26.6 18.8 11.7 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 14.3 15.9 16.5 23.7 30.9 35.0 35.9 36.0 33.3 20.8 18.3 12.3 24.4 1988 9.0 10.8 18.0 23.3 29.9 34.3 37.6 36.1 33.1 27.1 19.1 13.9 24.4 1989 ****** 10.3 16.6 22.9 28.7 35.9 37.3 36.1 32.7 27.4 17.1 13.5 ****** 1990 ****** ****** ****** 23.3 30.6 35.9 36.5 37.6 34.4 26.3 21.5 14.7 ****** 1991 11.0 11.9 16.5 24.4 29.0 34.6 37.7 36.7 33.2 24.6 19.1 10.8 24.1 1992 5.8 10.3 13.2 21.4 25.4 32.7 36.9 34.5 31.0 26.1 19.4 12.6 22.4 1993 7.7 12.2 14.6 22.5 26.6 34.4 36.3 ****** 31.2 24.7 17.9 15.1 ****** 1994 12.5 13.4 18.3 24.6 29.0 34.9 38.6 38.4 29.9 24.1 18.7 11.4 24.5 1995 15.1 ****** 18.3 22.8 27.5 32.4 38.7 37.5 32.9 26.0 21.1 8.4 ****** 1996 7.2 14.7 15.0 22.4 28.9 33.9 ****** 36.0 34.1 ****** 18.3 15.5 ****** 1997 13.2 14.4 15.5 22.5 28.4 34.5 39.8 38.2 33.8 28.4 17.6 13.1 24.9 1998 10.8 13.6 17.7 24.8 29.1 34.8 37.5 36.9 34.2 27.5 23.1 19.1 25.8 1999 11.7 16.9 16.7 24.7 31.6 37.0 37.3 36.6 35.7 29.7 17.4 13.0 25.7 2000 13.4 14.2 17.3 28.2 33.6 35.0 38.1 37.1 34.9 27.6 17.7 11.2 25.7 MEAN 9.2 12.0 16.3 22.2 28.2 33.8 36.5 35.1 31.1 24.1 16.9 11.4 23.1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 4 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 12.8 13.7 13.4 12.1 16.3 17.6 18.2 18.4 19.7 17.8 14.6 14.5 15.8 1962 12.8 15.3 17.2 16.8 17.1 17.7 17.6 17.7 19.8 17.9 15.9 14.4 16.7 1963 14.9 14.0 15.5 16.2 16.6 21.0 20.6 21.0 20.7 15.5 11.4 14.3 16.8 1964 13.4 13.2 10.4 14.6 17.6 17.3 18.2 17.5 16.4 18.4 13.7 14.9 15.5 1965 14.4 12.2 13.7 14.5 18.5 17.8 20.0 19.3 22.5 15.0 13.8 15.1 16.4 1966 9.3 13.2 14.3 12.3 15.8 17.6 19.8 18.3 21.2 14.3 14.9 15.9 15.6 1967 12.1 14.8 15.7 15.3 15.8 17.3 15.7 15.9 14.9 16.1 12.7 15.4 15.1 1968 16.4 11.9 14.6 11.5 15.3 15.3 15.2 14.6 16.3 14.0 12.8 12.4 14.2 1969 12.1 12.3 16.1 15.3 16.6 16.4 16.1 16.9 20.7 18.0 16.5 16.3 16.1 1970 11.9 14.2 14.8 17.0 17.1 19.5 16.4 18.9 17.9 19.8 17.8 13.5 16.6 1971 14.5 13.7 15.8 14.5 15.7 18.0 16.7 15.0 17.9 19.1 13.0 13.9 15.6 1972 12.9 11.6 10.5 13.2 12.8 13.7 13.9 14.1 18.6 18.7 17.3 12.7 14.2 1973 15.3 13.2 13.5 15.0 14.7 16.5 14.0 13.3 11.9 10.5 12.4 12.5 13.6 1974 11.6 11.3 11.1 9.8 11.3 11.0 14.9 13.3 12.6 12.4 10.8 14.1 12.0 1975 13.8 13.6 12.3 13.8 14.4 14.9 14.7 14.1 18.7 18.4 12.6 12.7 14.5 1976 12.7 12.0 10.2 8.9 10.2 10.5 15.0 15.3 12.5 11.7 9.1 10.7 11.6 1977 12.9 18.2 16.6 15.2 16.7 17.1 17.1 13.3 12.9 13.7 14.0 12.8 15.0 1978 13.6 12.9 12.9 17.5 17.8 18.7 18.2 17.8 20.8 19.0 14.0 13.8 16.4 1979 14.2 15.6 14.3 16.6 15.6 17.9 18.7 19.5 19.6 18.6 19.9 13.9 17.0 1980 16.1 13.5 15.0 15.4 16.3 18.7 17.7 17.0 15.5 15.1 12.4 12.3 15.4 1981 13.1 13.2 15.3 15.9 16.5 16.4 16.4 18.2 18.7 16.4 17.1 15.2 16.0 1982 12.6 14.2 14.0 16.8 15.9 18.6 18.2 19.2 18.8 14.4 14.7 13.9 15.9 1983 13.4 15.0 ****** 15.4 15.7 ****** ****** 19.0 ****** 20.7 19.4 14.7 ****** 1984 15.3 15.9 14.3 16.3 16.0 18.3 18.4 18.6 19.0 19.0 15.3 13.0 16.6 1985 16.8 15.8 ****** 16.9 17.7 18.3 17.4 17.6 20.1 19.6 15.5 13.5 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 17.3 17.9 15.5 17.3 17.9 18.4 17.8 18.3 18.7 13.2 15.3 15.1 16.9 1988 13.2 13.0 14.7 15.8 17.3 18.9 18.0 17.7 19.3 18.7 17.0 15.3 16.6 1989 ****** 14.8 14.1 15.3 16.7 18.8 17.6 18.2 19.1 18.3 14.2 14.0 ****** 1990 ****** ****** ****** 16.3 17.7 18.3 16.1 17.7 19.6 17.8 18.1 16.7 ****** 1991 13.3 15.5 13.9 16.4 17.0 17.9 18.0 18.7 19.7 16.4 16.0 11.7 16.2 1992 12.7 13.7 13.7 15.0 14.9 16.5 17.0 17.5 19.3 18.9 16.1 14.1 15.8 1993 12.1 13.2 12.5 14.7 14.7 18.0 16.9 ****** 19.1 17.7 14.9 15.7 ****** 1994 13.9 14.8 15.4 16.4 17.9 18.5 17.9 18.5 18.4 15.8 14.2 14.4 16.3 1995 16.2 ****** 15.1 14.8 15.4 16.4 18.2 19.1 18.6 18.4 18.6 10.7 ****** 1996 12.7 13.6 12.5 14.8 15.7 17.1 ****** 17.5 18.2 ****** 15.4 16.0 ****** 1997 14.6 17.0 14.8 15.5 16.4 17.2 17.8 19.6 19.5 18.1 14.0 14.9 16.6 1998 13.9 13.2 13.7 16.3 16.3 17.8 16.8 17.3 19.0 18.8 18.8 17.8 16.6 1999 12.8 16.1 13.4 16.7 18.2 19.1 17.3 20.4 20.4 20.1 14.0 14.8 16.9 2000 16.1 15.2 14.4 16.9 17.2 15.9 17.1 17.8 18.2 17.6 14.6 11.8 16.1 MEAN 13.7 14.1 14.0 15.1 16.1 17.2 17.2 17.4 18.3 16.9 14.9 14.1 15.8 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 5 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 2.52 2.97 4.44 5.33 6.65 7.26 6.61 5.63 6.52 4.94 3.95 1.85 4.89 1962 1.69 3.59 3.95 4.65 4.98 4.62 5.09 4.54 4.40 4.73 3.42 3.04 4.06 1963 3.39 3.91 3.67 4.30 4.87 4.55 4.63 4.77 4.53 4.45 3.84 0.93 3.99 1964 0.80 4.10 5.04 4.87 5.22 5.42 7.40 6.24 6.16 4.65 3.80 1.23 4.58 1965 1.86 4.41 4.69 4.74 5.88 4.90 5.64 5.36 5.34 4.86 4.69 4.19 4.71 1966 4.96 4.22 4.90 5.41 5.74 5.11 5.61 5.74 5.35 5.72 4.64 3.34 5.06 1967 2.92 2.70 3.83 4.39 4.83 4.65 5.74 6.16 5.68 4.62 4.33 1.81 4.31 1968 1.31 3.36 4.14 5.12 5.35 5.54 5.41 6.05 5.79 5.04 4.86 3.66 4.64 1969 2.07 2.99 4.61 5.13 6.23 6.15 6.02 7.99 5.10 4.79 3.58 3.24 4.82 1970 3.10 3.49 4.22 4.83 4.99 5.34 7.11 6.18 5.25 3.22 3.30 3.14 4.51 1971 2.87 3.28 4.16 5.40 7.22 5.83 6.34 5.73 5.76 3.31 4.70 3.00 4.80 1972 2.45 2.26 4.50 5.78 6.46 6.10 6.62 6.79 6.06 3.98 3.86 2.88 4.81 1973 2.52 3.78 4.64 4.65 5.33 5.08 4.99 5.76 5.29 5.12 4.41 3.36 4.58 1974 2.21 2.48 4.54 5.64 6.08 7.16 9.31 8.52 7.22 5.10 4.26 2.95 5.46 1975 2.72 2.80 3.87 4.78 5.97 8.51 9.29 6.79 5.99 4.67 4.67 2.86 5.24 1976 2.47 2.85 3.96 6.09 6.18 7.29 9.31 8.61 7.22 5.29 4.96 3.73 5.66 1977 2.31 3.04 4.51 5.49 6.13 7.08 6.05 6.64 5.56 5.49 4.40 4.01 5.06 1978 2.74 3.89 4.16 4.68 5.21 6.14 6.38 6.93 4.82 4.38 4.41 3.97 4.81 1979 3.43 3.92 4.06 5.01 7.04 7.22 7.26 5.98 5.33 5.13 3.62 3.24 5.10 1980 2.87 3.17 4.36 5.43 5.28 5.87 7.09 6.85 5.88 5.29 4.88 3.66 5.05 1981 3.14 3.54 4.22 4.86 5.68 6.70 6.56 6.24 5.04 4.67 3.99 3.15 4.81 1982 3.04 2.62 3.72 5.23 6.57 6.30 5.64 6.17 5.26 6.14 4.40 3.12 4.85 1983 2.82 3.18 ****** 4.75 7.24 ****** ****** 7.00 ****** 3.41 3.28 3.23 ****** 1984 2.90 3.11 4.66 4.88 5.82 7.27 7.09 6.74 5.02 3.83 4.54 2.95 4.90 1985 3.09 3.03 ****** 4.76 4.92 6.08 6.16 6.28 5.01 4.23 4.75 3.42 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 2.75 3.34 4.14 4.85 6.05 5.90 6.65 6.16 5.43 5.28 4.34 3.15 4.83 1988 2.69 3.36 3.89 5.08 5.71 6.16 8.01 7.16 5.10 4.56 3.80 3.05 4.88 1989 ****** 2.75 3.99 5.00 6.08 5.77 7.49 6.38 4.63 4.07 4.62 3.42 ****** 1990 ****** ****** ****** 4.78 5.78 6.21 7.97 6.96 4.52 4.47 3.61 2.98 ****** 1991 3.27 3.04 4.85 5.33 5.29 6.89 7.95 6.86 5.01 5.98 4.40 3.93 5.23 1992 2.60 2.80 3.32 4.98 7.06 6.89 7.59 7.20 4.95 3.77 3.96 3.55 4.89 1993 2.89 3.40 3.97 5.46 7.47 7.22 8.74 ****** 4.23 3.92 3.87 2.84 ****** 1994 3.02 2.84 4.02 5.13 5.98 5.94 7.35 7.95 5.04 5.46 4.96 2.47 5.01 1995 3.28 ****** 3.82 5.82 6.84 7.86 7.41 6.49 5.79 4.50 3.32 3.17 ****** 1996 2.73 4.04 4.44 5.49 7.04 7.05 8.06 6.38 5.27 4.41 3.68 3.27 5.15 1997 2.88 2.49 3.90 5.09 6.80 8.02 8.24 6.63 5.68 5.75 5.35 3.56 5.37 1998 3.05 3.77 4.81 5.41 6.71 7.63 8.97 8.62 6.97 5.21 3.90 3.83 5.74 1999 3.73 3.78 5.00 5.40 5.68 5.76 8.48 10.30 5.54 5.10 5.30 3.33 5.62 2000 2.89 3.40 3.95 5.74 5.98 7.40 8.98 8.23 7.11 6.22 4.11 3.59 5.63 MEAN 2.76 3.29 4.25 5.13 6.01 6.34 7.09 6.71 5.50 4.77 4.23 3.14 4.93 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 6 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 3.93 5.53 4.99 5.71 4.54 4.91 5.48 6.12 5.64 4.81 4.32 3.65 4.97 1962 3.66 3.40 3.60 4.98 4.03 4.24 5.80 5.12 4.87 4.60 4.19 3.84 4.36 1963 3.71 4.08 4.17 4.54 5.48 5.12 5.25 5.19 5.49 4.60 4.50 3.83 4.66 1964 3.60 4.48 5.00 4.71 5.53 6.03 8.76 9.04 5.36 5.05 4.75 4.67 5.58 1965 4.85 5.14 5.05 5.43 5.47 5.24 5.20 4.75 4.64 5.26 4.99 4.74 5.06 1966 5.39 5.10 4.42 5.63 5.63 4.41 6.31 6.22 5.36 6.85 4.99 5.02 5.44 1967 4.94 4.35 3.45 6.15 6.59 4.76 5.03 6.55 4.68 4.95 4.76 4.12 5.03 1968 4.11 4.10 4.04 4.65 3.48 4.18 4.92 5.82 5.93 5.38 5.57 5.14 4.78 1969 4.49 4.23 5.19 5.67 5.42 4.05 4.69 7.34 6.16 4.86 4.71 3.76 5.05 1970 3.74 4.01 4.62 4.57 4.07 5.13 7.00 8.46 5.48 4.67 3.62 3.85 4.93 1971 3.67 3.90 4.18 5.47 6.12 4.59 4.19 5.27 6.37 4.81 4.74 4.12 4.79 1972 4.25 4.10 5.35 5.90 6.08 4.71 5.52 6.01 4.56 4.51 4.45 4.12 4.96 1973 3.93 4.36 4.67 4.29 4.14 3.90 2.99 5.19 5.33 4.93 4.93 4.89 4.46 1974 4.13 4.08 4.91 4.93 4.51 4.31 5.08 5.48 5.44 4.20 3.79 3.94 4.57 1975 4.23 4.31 4.20 4.81 7.15 6.15 5.78 6.02 4.77 4.74 4.61 4.17 5.08 1976 4.48 5.07 4.63 5.45 4.82 4.75 5.03 5.48 5.43 4.46 4.79 4.88 4.94 1977 3.96 3.38 4.71 5.52 5.81 4.40 4.72 4.14 5.37 5.68 5.18 5.36 4.85 1978 4.49 5.17 4.69 4.54 4.12 4.25 5.45 5.08 5.20 5.06 4.37 4.33 4.73 1979 3.65 3.36 3.54 4.62 7.12 6.34 5.91 5.53 6.08 5.61 4.04 3.91 4.98 1980 3.63 4.09 4.93 5.59 4.77 5.55 5.83 6.74 6.31 6.24 5.65 4.04 5.28 1981 3.71 3.93 3.91 4.55 4.97 5.99 6.56 6.74 5.76 5.56 4.30 3.74 4.98 1982 3.75 3.02 3.69 5.65 6.69 6.03 6.28 7.03 6.74 7.21 5.19 3.88 5.43 1983 3.84 3.41 ****** 5.09 6.98 ****** ****** 7.63 ****** 5.26 4.92 4.22 ****** 1984 3.48 3.58 5.11 5.10 6.46 8.00 8.31 9.34 7.50 5.25 5.89 3.85 5.99 1985 3.97 2.82 ****** 4.79 5.65 6.88 6.65 7.25 7.41 6.35 6.64 4.29 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 3.30 3.93 4.36 5.09 6.50 6.48 7.38 7.68 6.73 6.25 5.01 4.26 5.58 1988 3.48 3.93 4.35 5.60 5.65 6.52 9.59 8.16 6.50 6.10 4.78 3.86 5.71 1989 ****** 3.90 4.91 5.32 5.96 6.63 8.08 7.78 6.10 5.67 6.00 4.30 ****** 1990 ****** ****** ****** 4.94 6.29 7.53 8.91 8.77 6.76 5.99 5.68 4.33 ****** 1991 3.98 3.72 6.26 6.32 6.37 8.37 10.33 9.32 6.62 7.72 6.21 4.32 6.63 1992 3.42 3.24 3.63 4.88 7.49 6.85 8.72 8.29 6.46 5.07 4.71 4.64 5.62 1993 3.44 3.89 4.43 5.51 7.84 8.14 11.19 ****** 6.13 5.48 5.20 5.48 ****** 1994 4.38 4.08 4.07 6.00 6.10 7.50 7.95 11.04 7.25 7.99 6.73 3.75 6.40 1995 3.99 ****** 5.20 5.95 6.51 7.20 7.82 7.72 7.57 5.59 3.47 4.08 ****** 1996 3.98 4.00 4.12 5.21 6.82 6.27 8.13 7.42 7.01 5.26 4.12 3.92 5.52 1997 3.05 2.30 3.92 5.57 6.75 7.80 8.26 6.87 6.69 6.54 4.93 3.51 5.52 1998 3.40 3.86 4.79 5.33 7.17 7.85 9.39 9.87 8.40 6.51 5.26 6.43 6.52 1999 4.93 5.57 6.42 5.34 5.53 5.67 8.06 7.14 6.00 5.25 5.70 4.05 5.81 2000 3.19 4.08 4.32 5.40 6.19 7.95 8.84 8.10 7.18 7.17 5.40 4.01 5.99 MEAN 3.95 4.04 4.56 5.26 5.82 5.92 6.83 7.00 6.09 5.58 4.96 4.30 5.35 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 7 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 4.02 5.25 5.55 5.42 4.73 5.52 7.30 7.70 6.77 4.47 4.68 4.16 5.46 1962 4.04 4.02 3.97 5.47 4.48 4.89 5.54 5.59 5.25 4.96 4.25 4.18 4.72 1963 3.98 3.62 4.50 4.84 5.64 6.26 5.72 5.31 5.64 4.75 4.70 3.52 4.87 1964 2.28 4.60 4.96 4.52 5.41 5.95 9.10 8.37 5.37 4.83 4.87 3.44 5.31 1965 4.42 4.91 5.10 5.07 5.71 5.32 5.56 5.47 4.98 5.54 4.98 4.78 5.15 1966 5.12 5.06 4.70 5.74 5.64 5.17 7.05 5.72 5.30 5.79 4.98 5.35 5.47 1967 4.84 4.47 3.85 5.59 5.84 5.42 5.45 6.54 5.07 5.53 4.91 4.32 5.15 1968 4.35 4.40 4.13 5.07 4.33 4.69 5.50 5.55 6.46 5.33 5.32 4.99 5.01 1969 3.82 4.41 4.93 6.06 5.37 4.07 5.15 7.05 6.00 5.25 4.32 4.25 5.06 1970 3.93 3.81 4.07 4.97 4.07 6.62 7.02 7.19 5.69 5.27 3.74 3.59 5.00 1971 3.94 3.67 4.15 4.94 6.50 4.88 4.79 5.36 6.43 4.69 5.22 4.10 4.89 1972 3.63 3.39 4.99 5.44 5.76 5.44 5.76 6.16 5.32 4.88 4.77 3.83 4.95 1973 3.75 4.37 4.95 4.36 4.55 4.23 4.24 5.73 5.74 4.99 4.86 4.81 4.71 1974 3.60 3.41 4.92 5.06 4.52 5.17 5.74 5.80 5.71 4.61 4.59 3.36 4.71 1975 3.56 3.55 4.24 5.18 7.34 7.80 6.83 6.25 5.23 4.92 4.84 4.35 5.34 1976 4.44 4.34 4.76 5.07 5.31 5.69 5.74 5.80 5.71 4.76 4.93 4.34 5.08 1977 3.16 3.45 4.82 5.91 6.66 5.57 4.84 5.29 5.45 5.22 5.19 5.11 5.06 1978 3.81 4.46 4.76 4.67 4.11 4.90 5.45 6.14 5.93 5.33 4.63 4.41 4.89 1979 3.98 4.07 3.62 4.40 6.48 6.79 5.67 5.72 5.67 4.74 3.64 3.67 4.87 1980 3.46 3.72 4.27 5.60 4.68 5.11 5.25 6.46 6.46 5.72 4.55 3.97 4.94 1981 3.42 3.67 3.85 4.49 4.68 5.55 6.08 6.60 6.38 5.53 3.90 3.34 4.79 1982 3.37 2.81 3.55 5.07 6.32 5.59 6.28 6.63 5.87 7.25 5.09 3.76 5.13 1983 3.25 3.79 ****** 4.86 6.62 ****** ****** 7.02 ****** 4.13 3.61 3.64 ****** 1984 3.50 3.65 5.35 5.41 6.21 7.66 8.68 9.75 7.12 5.16 5.23 3.70 5.95 1985 4.19 3.04 ****** 4.59 5.40 6.90 7.02 7.41 6.58 5.12 5.54 3.76 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 3.10 3.67 4.11 4.64 6.25 6.50 7.16 7.23 5.99 5.75 4.60 3.68 5.22 1988 3.31 3.70 4.08 5.41 5.74 6.04 8.51 8.38 5.77 5.22 3.66 3.21 5.25 1989 ****** 3.38 4.24 5.04 5.60 5.91 7.92 7.34 6.18 4.66 5.51 4.12 ****** 1990 ****** ****** ****** 4.98 6.54 7.77 9.67 10.02 5.25 6.03 5.52 4.32 ****** 1991 4.20 3.84 6.19 6.52 6.07 8.25 11.04 10.91 7.24 7.87 6.22 4.78 6.93 1992 3.29 3.23 3.67 4.83 7.27 7.47 10.37 8.76 6.92 5.94 5.03 4.50 5.94 1993 4.00 4.27 4.71 5.41 7.78 8.82 11.54 ****** 5.55 6.00 4.89 4.11 ****** 1994 4.06 3.67 4.22 6.12 7.16 7.30 10.11 11.61 7.73 8.04 6.23 3.62 6.66 1995 4.17 ****** 5.11 5.83 7.40 7.28 8.63 9.17 7.73 5.87 3.80 3.74 ****** 1996 3.42 4.22 4.36 4.79 6.52 6.57 8.97 8.81 7.40 5.55 4.74 4.36 5.81 1997 3.42 2.55 3.77 5.61 7.02 8.35 10.29 7.63 5.60 7.14 4.55 3.98 5.83 1998 3.64 4.40 7.00 9.35 9.92 12.45 10.36 12.18 9.53 7.78 6.61 6.52 8.31 1999 5.21 5.72 6.14 5.09 6.34 5.99 8.74 8.17 6.84 5.91 6.31 4.72 6.26 2000 3.78 4.20 4.20 5.78 6.83 8.11 9.40 10.00 8.60 8.35 5.73 4.34 6.61 MEAN 3.83 3.97 4.61 5.32 5.97 6.37 7.33 7.39 6.23 5.62 4.90 4.18 5.47 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 8 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 -12.0 10 -12.5 3 -7.0 5 -0.5 4 6.0 31 6.5 3 14.0 29 12.5 19 8.5 30 -0.5 29 -5.5 27 -5.0 18 -12.5 1962 -9.5 2 -5.0 10 -3.0 12 1.0 19 5.0 1 9.0 11 14.0 27 11.5 10 3.0 29 4.0 12 -8.5 28 -8.5 2 -9.5 1963 -7.0 8 -6.5 7 -7.0 9 3.5 16 3.0 4 10.0 1 12.5 24 12.5 2 5.5 30 4.5 9 -4.5 30 -15.5 29 -15.5 1964 -18.5 20 -8.0 1 5.0 2 2.0 11 6.0 1 13.5 22 13.0 1 14.0 30 9.0 29 0.5 29 -9.0 29 -15.5 19 -18.5 1965 -16.0 4 -5.0 4 -5.0 16 -6.0 10 6.5 1 15.0 8 15.5 12 10.0 19 5.5 23 1.0 19 0.0 11 -7.5 21 -16.0 1966 1.0 26 -5.0 12 -3.0 2 3.5 2 4.0 8 12.5 2 14.0 30 10.5 8 5.5 23 5.5 24 -5.0 28 -6.5 17 -6.5 1967 -11.5 23 -9.0 2 -4.0 3 -4.5 2 5.5 1 11.0 1 18.0 8 15.0 31 8.0 23 1.5 25 -5.0 27 -12.0 25 -12.0 1968 -14.5 24 -14.0 7 -5.0 25 5.0 1 6.0 1 10.5 14 17.5 5 17.0 29 9.0 28 5.0 17 -2.5 25 -3.5 12 -14.5 1969 -18.0 9 -9.0 5 0.0 19 -1.0 14 7.5 11 10.5 1 16.5 11 10.5 30 5.0 14 3.5 31 -6.5 19 -5.5 28 -18.0 1970 -9.0 29 -8.0 1 -1.5 9 3.5 10 6.5 8 12.0 12 15.0 7 10.5 16 7.5 22 0.5 24 -1.5 26 -9.9 28 -9.9 1971 -10.5 31 -10.0 2 -4.5 16 -1.5 3 8.5 1 11.0 6 17.5 8 18.0 28 5.5 27 1.0 15 -0.8 15 -9.0 22 -10.5 1972 -15.5 21 -16.5 3 -3.0 11 2.0 4 7.5 7 13.5 1 13.0 7 15.5 27 7.0 27 -0.5 31 -4.5 25 -16.0 26 -16.5 1973 -14.0 1 -8.5 7 -5.0 9 3.0 10 9.5 7 15.5 1 20.5 24 17.5 31 11.5 30 4.0 26 -5.5 29 -7.5 27 -14.0 1974 -11.0 13 -17.0 5 -6.0 10 6.0 2 13.5 1 17.0 1 16.5 26 18.0 24 11.0 29 0.0 22 -3.5 29 -9.5 28 -17.0 1975 -9.0 15 -9.5 13 -4.5 5 0.0 4 5.5 7 15.0 2 19.5 2 15.5 27 7.0 23 3.0 18 0.5 15 -9.5 28 -9.5 1976 -7.5 17 -11.5 17 -10.5 4 5.0 3 12.5 1 17.0 1 16.5 26 14.0 29 11.0 29 3.0 27 -1.5 20 -7.5 23 -11.5 1977 -13.0 14 -7.0 2 -1.0 8 2.5 16 9.0 6 10.0 1 16.5 30 15.5 2 13.5 26 1.5 24 -2.0 29 -8.0 31 -13.0 1978 -10.0 13 -4.5 13 -2.0 17 0.0 15 3.5 4 7.5 1 12.0 10 13.0 6 9.0 23 5.0 28 -5.0 23 -5.0 26 -10.0 1979 -9.5 29 -4.5 6 -9.0 5 1.0 30 6.0 1 11.5 2 15.0 30 10.5 31 7.5 30 4.5 27 -6.5 22 -6.0 24 -9.5 1980 -10.0 17 -10.0 2 -8.0 6 1.0 18 5.0 1 12.0 2 15.5 3 15.0 30 10.5 24 2.0 31 0.0 27 -5.5 14 -10.0 1981 -7.0 6 -5.5 4 -3.5 5 -2.0 2 5.0 3 10.0 6 12.5 31 12.0 31 4.5 25 2.5 24 -4.0 26 -5.0 29 -7.0 1982 -6.5 21 -9.5 19 -4.0 6 0.5 1 11.0 11 13.0 2 14.5 21 10.5 29 10.0 27 4.0 30 -4.5 28 -9.5 12 -9.5 1983 -12.0 29 -9.0 2 ***** ** 0.0 2 7.0 7 ***** ** ***** ** 15.0 22 ***** ** 0.0 23 -1.0 27 -8.5 22 ***** 1984 -9.0 31 -10.0 20 -3.5 1 3.0 1 3.5 2 10.0 3 14.0 10 16.5 30 6.0 30 -3.0 23 -1.5 22 -9.0 21 -10.0 1985 -6.5 1 -7.0 7 ***** ** 2.0 7 4.5 5 13.5 10 18.5 5 13.5 13 11.5 20 2.0 25 -0.5 30 -7.5 31 ***** 1986 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1987 -5.0 2 -6.0 23 -4.0 15 -1.0 6 9.0 8 13.0 1 15.5 17 15.0 31 10.5 24 3.5 12 -3.5 30 -7.0 1 -7.0 1988 -8.0 1 -7.5 7 -3.0 6 0.5 2 8.0 8 13.0 8 15.0 28 15.5 12 10.0 25 5.0 23 -5.0 24 -9.5 30 -9.5 1989 ***** ** -9.0 7 -4.5 31 0.5 1 5.5 1 13.5 2 16.0 25 15.5 19 8.5 23 5.5 24 0.0 23 -3.5 18 ***** 1990 ***** ** ***** ** ***** ** 2.0 6 7.5 14 11.5 1 16.0 19 15.5 16 11.5 20 4.0 30 0.0 30 -9.5 28 ***** 1991 -5.5 7 -9.5 14 -1.5 8 3.5 14 6.5 4 13.5 1 18.0 29 14.5 26 6.5 28 5.5 31 -1.5 28 -7.0 20 -9.5 1992 -11.0 26 -8.0 13 -7.5 11 0.2 2 4.5 5 11.5 6 16.5 27 12.5 31 8.0 13 2.5 2 -7.0 27 -8.0 29 -11.0 1993 -8.5 16 -6.0 18 -2.8 17 4.0 13 6.5 1 12.5 5 16.5 23 ***** ** 10.0 18 1.4 9 -3.5 30 -4.5 7 ***** 1994 -6.8 28 -7.0 4 -1.2 16 2.5 6 1.0 6 9.5 26 16.0 1 16.0 24 5.5 22 4.5 13 -1.0 27 -10.5 7 -10.5 1995 -5.0 24 ***** ** -3.4 1 3.2 7 8.4 15 9.8 2 16.6 6 16.0 19 9.2 22 2.4 21 -6.4 27 -6.8 15 ***** 1996 -13.2 15 -4.0 6 -1.8 9 -0.2 6 9.4 12 12.4 7 15.2 17 15.0 4 13.0 29 3.6 20 -3.0 19 -4.8 13 -13.2 1997 -5.2 20 -10.8 8 -5.4 9 -2.8 12 5.0 6 12.8 1 17.0 1 14.0 30 11.2 10 6.5 28 -2.4 26 -9.0 24 -10.8 1998 -8.0 15 -5.4 18 -2.4 4 3.0 25 5.2 3 13.4 30 16.2 21 17.0 10 12.0 19 5.0 26 1.2 26 -2.8 23 -8.0 1999 -6.4 4 -5.0 25 -2.4 19 3.6 11 9.6 22 15.0 7 15.6 29 9.0 29 10.4 28 4.6 6 -2.2 30 -8.8 24 -8.8 2000 -9.0 15 -4.8 23 -2.5 2 6.0 2 10.0 12 15.6 25 17.0 25 16.6 23 13.2 21 8.2 15 -1.4 29 -5.4 17 -9.0 LOW. -18.5 20 -17.0 5 -10.5 4 -6.0 10 1.0 6 6.5 3 12.0 10 9.0 29 3.0 29 -3.0 23 -9.0 29 -16.0 26 -18.5 YEAR 1964 1974 1976 1965 1994 1961 1978 1999 1962 1984 1964 1972 1964 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 9 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 12.5 19 15.5 26 20.5 31 27.0 29 32.0 25 36.0 21 39.0 11 38.0 11 37.0 14 31.0 1 21.5 5 13.0 4 39.0 1962 12.5 31 22.0 18 28.0 23 24.5 3 32.5 25 35.0 15 37.0 3 36.0 24 33.5 5 30.0 3 21.5 1 17.0 23 37.0 1963 19.0 31 21.0 25 20.0 15 26.5 21 32.0 31 37.0 15 37.5 9 37.5 19 35.5 1 27.5 2 17.5 1 15.0 16 37.5 1964 10.5 19 18.5 29 24.5 31 26.5 28 33.5 23 35.0 13 40.0 2 39.0 18 32.0 2 26.0 1 18.5 1 8.5 1 40.0 1965 10.0 27 16.5 13 20.0 7 27.0 21 34.5 24 37.5 29 39.0 30 37.0 26 35.0 1 25.0 6 21.5 2 22.0 6 39.0 1966 17.0 1 18.0 2 23.0 12 27.0 16 32.5 22 36.0 11 37.5 11 35.5 11 33.0 6 26.0 2 21.5 2 15.5 6 37.5 1967 11.5 16 15.5 7 20.0 7 24.5 22 30.5 25 35.5 28 37.5 18 36.5 14 31.0 1 27.5 13 16.5 1 11.0 14 37.5 1968 11.5 14 12.5 21 24.0 26 27.0 15 31.0 23 37.5 29 38.5 4 35.5 3 32.0 1 28.0 19 21.0 13 14.5 6 38.5 1969 13.0 22 19.0 28 27.0 31 26.5 4 32.5 15 35.5 29 37.5 2 36.5 2 33.5 3 29.5 5 25.5 1 18.0 13 37.5 1970 14.6 3 16.5 22 25.0 31 29.5 18 35.5 31 38.0 15 38.5 1 39.0 4 35.0 5 31.0 3 24.5 1 17.5 6 39.0 1971 17.0 7 17.0 27 28.0 14 25.0 28 32.5 28 37.5 23 37.5 5 36.0 2 35.0 3 28.0 1 23.0 4 19.5 14 37.5 1972 12.0 25 14.5 17 16.5 14 24.5 28 30.0 29 37.0 29 38.5 9 35.5 1 34.0 3 27.5 19 23.5 3 14.0 12 38.5 1973 12.5 30 19.0 19 21.5 18 28.5 29 32.5 29 36.5 28 39.0 20 36.5 1 30.5 1 23.5 1 19.5 17 11.5 12 39.0 1974 9.5 1 12.0 28 17.5 30 24.0 30 28.5 27 34.0 30 38.0 11 34.5 3 31.0 3 24.0 13 16.0 28 13.5 1 38.0 1975 15.0 4 16.5 23 19.5 26 26.0 13 34.0 30 35.5 30 38.0 19 35.5 1 34.0 3 28.0 1 23.0 4 12.5 13 38.0 1976 9.5 23 9.5 14 12.5 20 21.0 30 27.5 23 32.5 30 38.0 11 34.5 3 31.0 3 24.0 13 12.5 4 10.0 1 38.0 1977 11.0 2 21.5 28 25.0 8 27.5 14 32.5 14 38.0 30 40.5 15 33.5 5 32.0 10 26.5 2 20.0 8 18.5 5 40.5 1978 14.0 21 18.5 20 19.5 11 27.0 10 32.5 26 39.0 30 39.0 2 36.5 8 35.0 3 31.0 1 20.0 2 18.5 2 39.0 1979 17.0 2 18.0 27 21.0 24 29.0 6 31.5 30 35.5 26 39.0 9 35.5 3 35.0 14 32.0 3 25.5 3 17.5 3 39.0 1980 14.5 6 14.5 8 22.5 26 29.0 24 32.5 21 38.0 27 37.5 30 37.0 21 33.0 6 30.0 4 21.5 12 15.0 5 38.0 1981 14.5 25 16.5 8 24.0 20 29.5 22 32.5 27 35.5 24 37.5 4 36.5 13 34.5 19 27.0 4 22.5 2 16.5 15 37.5 1982 14.5 25 14.0 28 19.0 24 28.5 24 32.5 19 38.0 12 38.5 30 39.5 5 34.5 5 28.0 1 19.0 8 14.0 28 39.5 1983 13.5 2 16.0 25 ***** ** 25.0 17 32.0 18 ***** ** ***** ** 39.5 2 ***** ** 31.5 4 26.0 1 19.5 9 ***** 1984 17.0 6 22.0 13 26.5 10 27.5 20 30.0 27 37.5 22 37.0 27 39.5 15 36.5 1 29.5 6 22.0 4 16.0 3 39.5 1985 18.0 27 21.0 15 ***** ** 29.5 21 35.5 31 39.0 25 39.5 22 37.5 3 35.5 7 32.5 3 24.0 4 19.0 1 ***** 1986 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1987 18.5 18 22.0 2 20.5 7 29.5 29 34.0 16 37.0 5 38.5 12 38.5 15 37.5 7 29.5 4 24.5 6 18.5 20 38.5 1988 16.5 17 17.0 24 23.5 30 28.5 18 34.0 28 37.5 14 42.0 25 38.0 4 37.0 9 30.0 7 26.0 8 19.0 8 42.0 1989 ***** ** 18.5 28 22.0 7 28.5 15 36.5 31 39.5 28 41.0 10 38.5 5 36.5 3 33.0 9 20.0 3 18.0 1 ***** 1990 ***** ** ***** ** ***** ** 30.5 27 35.0 21 38.5 28 39.0 4 39.5 16 37.5 1 31.5 4 25.5 4 22.0 5 ***** 1991 15.5 23 18.5 26 22.5 22 30.0 22 34.5 30 37.5 29 40.2 10 40.0 8 38.0 9 28.0 10 25.5 1 15.0 13 40.2 1992 12.5 17 16.5 20 21.0 30 34.0 17 31.5 30 37.5 29 39.5 6 38.5 6 33.5 15 30.0 3 25.0 1 19.0 6 39.5 1993 16.5 30 19.5 27 22.0 31 28.5 18 34.0 27 38.5 18 39.5 15 ***** ** 34.0 14 32.0 1 24.0 3 18.8 2 ***** 1994 21.0 1 19.0 28 25.0 31 30.5 24 34.5 31 38.0 20 41.0 25 41.0 6 38.0 1 29.5 1 24.5 4 17.5 19 41.0 1995 19.0 5 ***** ** 23.5 25 27.5 30 32.0 21 37.0 12 41.5 14 39.5 6 36.5 9 32.5 4 26.0 1 17.0 2 ***** 1996 15.5 30 21.5 9 23.5 31 27.5 23 35.5 27 37.5 3 ***** ** 40.0 25 37.6 11 ***** ** 25.5 3 19.5 26 ***** 1997 20.0 9 20.0 18 23.0 3 29.0 27 35.0 28 37.5 16 42.0 14 41.0 15 37.5 1 33.0 4 22.5 1 18.0 3 42.0 1998 14.5 26 20.0 7 25.0 28 31.5 16 33.5 11 37.2 29 42.5 11 40.5 22 37.0 5 34.0 1 25.5 2 22.5 19 42.5 1999 18.5 31 21.0 27 24.0 31 29.0 24 36.0 31 41.0 28 41.5 5 39.0 30 38.5 2 32.2 5 22.5 1 18.0 3 41.5 2000 20.0 1 18.2 11 21.2 19 32.0 30 38.0 31 38.8 11 41.0 10 39.2 27 37.2 11 33.6 1 25.6 2 15.0 2 41.0 HIG. 21.0 1 22.0 18 28.0 23 34.0 17 38.0 31 41.0 28 42.5 11 41.0 6 38.5 2 34.0 1 26.0 1 22.5 19 42.5 YEAR 1994 1962 1962 1992 2000 1999 1998 1994 1999 1998 1983 1998 1998 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 10 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 29.5 21 7.0 2 16.0 13 19.0 8 4.0 30 0.0 ** 2.0 18 0.0 ** 0.0 ** 0.0 ** 9.0 23 10.0 14 29.5 1962 8.0 9 3.0 3 9.0 1 42.5 21 8.0 3 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 10.0 8 13.0 10 42.5 1963 0.0 ** 7.0 12 26.0 27 3.0 24 15.0 13 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 5.0 11 11.5 31 26.0 1964 3.0 26 3.0 3 9.0 16 8.0 16 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 25 33.0 13 33.0 1965 26.0 1 10.0 2 6.0 22 3.0 20 4.0 3 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 3 4.0 9 2.0 8 26.0 1966 7.0 21 49.0 9 12.0 2 0.0 ** 4.0 6 0.0 ** 0.0 ** 0.0 ** 0.0 ** 15.0 14 0.0 ** 6.0 20 49.0 1967 6.0 4 9.0 19 0.0 ** 7.0 1 8.0 8 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.0 22 14.0 19 3.0 6 14.0 1968 10.0 20 12.0 3 13.0 6 12.0 2 6.0 25 4.0 24 5.0 12 0.0 ** 0.0 ** 1.0 31 6.0 1 10.0 1 13.0 1969 25.0 24 0.0 ** 12.0 21 13.0 27 13.5 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 2 3.0 16 25.0 1970 13.5 12 15.0 23 6.0 20 21.0 30 2.0 2 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 15.5 12 21.0 1971 12.5 31 19.0 13 7.5 23 10.0 13 2.0 9 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 10.0 9 4.5 13 19.0 1972 12.0 29 11.0 7 12.5 2 10.0 2 7.5 28 0.0 ** 0.0 ** 0.0 ** 3.0 10 0.0 ** 6.5 20 6.0 1 12.5 1973 0.0 ** 32.0 10 10.5 2 7.5 16 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.5 30 32.0 1974 17.0 31 18.0 20 14.5 1 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.0 12 0.0 ** 18.0 5 18.0 1975 14.0 18 1.5 25 12.0 31 10.0 17 9.0 12 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 9.5 23 14.0 1976 6.0 11 9.0 28 15.0 22 18.0 6 6.0 14 0.0 ** 0.0 ** 0.0 ** 0.0 ** 39.0 30 6.2 29 10.2 22 39.0 1977 5.0 3 2.0 7 4.0 26 19.5 1 13.0 24 0.0 ** 0.8 29 0.0 ** 0.0 ** 3.5 26 19.0 13 15.5 22 19.5 1978 9.0 4 9.0 10 7.0 6 0.0 ** 1.5 2 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 7.0 11 37.0 3 37.0 1979 17.0 23 4.6 9 13.5 28 0.0 ** 16.0 8 3.5 3 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 20.0 15 20.0 1980 15.2 22 44.0 25 13.5 15 14.0 4 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.4 30 3.5 20 20.0 18 44.0 1981 14.0 12 20.0 11 6.2 28 12.0 17 1.5 16 2.5 22 0.0 ** 0.0 ** 0.0 ** 3.0 22 4.2 29 10.2 31 20.0 1982 7.2 29 3.5 14 9.0 25 1.0 15 6.5 24 0.0 ** 0.0 ** 0.0 ** 0.0 ** 6.0 9 13.0 1 6.6 14 13.0 1983 14.2 15 0.0 ** ***** ** 14.5 1 4.5 2 ***** ** ***** ** 0.0 ** ***** ** 0.0 ** 4.4 11 8.0 18 ***** 1984 20.0 17 6.4 24 22.6 20 10.0 17 10.3 10 1.0 2 0.0 ** 0.0 ** 0.0 ** 0.7 19 9.0 12 5.5 28 22.6 1985 2.8 2 22.5 1 ***** ** 1.8 8 0.5 16 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 10.4 13 12.8 19 ***** 1986 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1987 6.0 6 8.0 14 27.0 30 7.5 4 4.0 20 0.0 ** 7.0 27 0.0 ** 0.0 ** 9.5 27 2.5 3 10.0 24 27.0 1988 4.5 18 15.5 3 16.5 9 10.0 26 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.5 13 0.0 ** 16.5 1989 ***** ** 5.0 11 12.5 24 4.5 22 2.0 8 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 11.5 2 52.5 4 ***** 1990 ***** ** ***** ** ***** ** 8.5 3 0.0 ** 0.0 ** 1.0 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 8.5 21 ***** 1991 8.0 14 5.0 21 25.0 6 2.0 4 0.0 ** 1.0 23 0.0 ** 0.0 ** 1.5 29 14.5 16 8.0 16 14.5 4 25.0 1992 11.5 21 17.5 25 18.5 31 6.5 26 31.0 6 9.5 14 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.5 9 31.0 1993 27.0 8 34.0 3 15.0 9 7.5 9 9.0 6 0.0 ** 0.0 ** ***** ** 0.0 ** 0.0 ** 44.0 12 0.0 ** ***** 1994 18.0 24 7.1 1 20.0 12 4.0 2 5.5 26 0.0 ** 1.5 12 0.0 ** 0.8 29 7.2 7 21.0 17 6.5 3 21.0 1995 1.7 12 2.0 23 9.0 14 11.5 23 16.0 30 10.0 2 0.0 ** 0.0 ** 0.0 ** 6.0 23 0.0 ** 14.5 12 16.0 1996 10.5 12 12.8 5 19.0 4 11.0 15 7.0 12 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.5 28 9.5 23 19.0 1997 4.0 17 0.0 ** 12.0 25 11.0 5 4.0 20 5.0 1 0.0 ** 0.0 ** 0.0 ** 1.5 21 6.5 9 17.0 21 17.0 1998 11.5 5 21.6 10 21.6 18 0.5 5 10.3 14 0.0 ** 0.0 ** 1.0 8 0.0 ** 7.2 11 0.0 ** 3.0 4 21.6 1999 12.5 25 14.0 6 17.0 2 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 8 5.0 12 17.0 2000 16.0 29 1.0 14 6.0 25 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 6.0 16 4.0 5 11.8 15 16.0 HIG. 29.5 21 49.0 9 27.0 30 42.5 21 31.0 6 10.0 2 7.0 27 1.0 8 3.0 10 39.0 30 44.0 12 52.5 4 52.5 YEAR 1961 1966 1987 1962 1992 1995 1987 1998 1972 1976 1993 1989 1989 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 11 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. MONTHLY TOTAL PRECIPITATION WITH SEASONAL PERCENT. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL SEASONAL-PERCENT ----------------------- 1961 44.0 21.0 32.0 58.0 4.0 0.0 2.0 0.0 0.0 0.0 24.0 10.0 195.0 49.7 31.8 1.0 17.4 1962 21.0 11.0 12.0 73.5 10.0 0.0 0.0 0.0 0.0 0.0 10.0 35.0 172.5 25.5 48.4 0.0 26.1 1963 0.0 9.0 56.0 5.0 24.0 0.0 0.0 0.0 0.0 0.0 9.0 27.5 130.5 49.8 22.2 0.0 28.0 1964 8.0 5.0 29.0 8.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0 62.5 117.5 35.7 6.8 0.0 57.4 1965 76.0 10.0 6.0 5.0 4.0 0.0 0.0 0.0 0.0 8.0 4.0 6.0 119.0 77.3 7.6 0.0 15.1 1966 19.0 58.0 28.0 0.0 4.0 0.0 0.0 0.0 0.0 39.0 0.0 7.0 155.0 67.7 2.6 0.0 29.7 1967 12.5 23.2 0.0 13.0 10.0 0.0 0.0 0.0 0.0 1.0 33.0 3.0 95.7 37.3 24.0 0.0 38.7 1968 11.0 14.5 39.0 53.0 12.0 4.0 5.0 0.0 0.0 1.0 13.5 23.0 176.0 36.6 39.2 2.8 21.3 1969 102.0 0.0 27.1 41.5 18.0 0.0 0.0 0.0 0.0 0.0 6.0 5.0 199.6 64.7 29.8 0.0 5.5 1970 30.5 28.0 9.5 35.5 4.5 0.0 0.0 0.0 0.0 0.0 0.0 36.0 144.0 47.2 27.8 0.0 25.0 1971 17.5 34.0 8.5 36.5 5.0 0.0 0.0 0.0 0.0 0.0 20.5 11.0 133.0 45.1 31.2 0.0 23.7 1972 32.0 27.0 50.0 30.0 24.5 0.0 0.0 0.0 5.0 0.0 14.5 12.0 195.0 55.9 27.9 2.6 13.6 1973 0.0 41.5 21.5 7.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.5 73.0 86.3 10.3 0.0 3.4 1974 61.0 46.5 23.5 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 49.3 182.3 71.9 0.0 0.0 28.1 1975 29.0 1.5 31.0 25.0 16.0 0.0 0.0 0.0 0.0 0.0 0.0 33.0 135.5 45.4 30.3 0.0 24.4 1976 15.0 29.2 41.0 32.0 21.5 0.0 0.0 0.0 0.0 56.0 7.7 18.2 220.6 38.6 24.3 0.0 37.1 1977 16.4 2.0 4.0 48.0 14.5 0.0 0.8 0.0 0.0 9.0 31.4 50.0 176.1 12.7 35.5 0.5 51.3 1978 13.0 16.0 17.0 0.0 1.5 0.0 0.0 0.0 0.0 0.0 21.3 70.4 139.2 33.0 1.1 0.0 65.9 1979 37.8 8.8 14.0 0.0 39.7 6.9 0.0 0.0 0.0 0.0 0.0 51.0 158.2 38.3 29.5 0.0 32.2 1980 21.7 99.2 32.0 24.2 0.0 0.0 0.0 0.0 0.0 2.4 5.2 20.8 205.5 74.4 11.8 0.0 13.8 1981 22.5 27.5 14.2 12.0 2.0 2.5 0.0 0.0 0.0 3.8 10.5 10.8 105.8 60.7 15.6 0.0 23.7 1982 22.4 10.2 28.4 1.6 14.4 0.0 0.0 0.0 0.0 19.6 31.7 15.1 143.4 42.5 11.2 0.0 46.3 1983 43.3 0.0 ****** 20.5 7.4 ****** ****** 0.0 ****** 0.0 4.4 14.5 ****** 48.1 31.0 0.0 21.0 1984 25.1 11.4 60.8 10.0 24.7 1.0 0.0 0.0 0.0 0.7 15.1 12.7 161.5 60.2 22.1 0.0 17.6 1985 5.8 23.5 ****** 2.8 1.0 0.0 0.0 0.0 0.0 0.0 23.8 24.9 ****** 35.8 4.6 0.0 59.5 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1987 6.0 16.0 41.0 8.8 8.6 0.0 9.5 0.0 0.0 23.5 2.5 22.5 138.4 45.5 12.6 6.9 35.0 1988 5.5 32.9 37.0 15.5 0.0 0.0 0.0 0.0 0.0 0.0 4.5 0.0 95.4 79.0 16.2 0.0 4.7 1989 ****** 12.0 28.7 12.5 2.0 0.0 0.0 0.0 0.0 0.0 33.0 66.3 ****** 26.3 9.4 0.0 64.3 1990 ****** ****** ****** 8.5 0.0 0.0 1.0 0.0 0.0 0.0 0.0 12.0 ****** ***** 39.5 4.7 55.8 1991 23.0 8.0 55.5 4.0 0.0 1.0 0.0 0.0 1.5 16.5 8.0 58.0 175.5 49.3 2.8 0.9 47.0 1992 40.5 17.5 24.0 10.5 58.5 9.5 0.0 0.0 0.0 0.0 0.0 12.0 172.5 47.5 45.5 0.0 7.0 1993 40.5 50.0 41.5 7.5 17.0 0.0 0.0 ****** 0.0 0.0 56.3 0.0 ****** 62.0 11.5 0.0 26.5 1994 25.5 12.6 33.3 13.9 7.6 0.0 1.5 0.0 0.8 23.7 39.9 9.4 168.2 42.4 12.8 1.4 43.4 1995 2.7 2.0 17.0 32.0 22.0 24.5 0.0 0.0 0.0 6.0 0.0 35.3 141.5 15.3 55.5 0.0 29.2 1996 35.5 48.8 71.0 17.5 11.8 0.0 0.0 0.0 0.0 0.0 1.5 14.0 200.1 77.6 14.6 0.0 7.7 1997 9.1 0.0 39.3 31.6 12.5 13.5 0.0 0.0 0.0 2.5 23.1 36.5 168.1 28.8 34.3 0.0 36.9 1998 20.2 42.5 46.3 0.9 20.0 0.0 0.0 1.0 0.0 11.2 0.0 5.5 147.6 73.8 14.2 0.7 11.3 1999 23.9 19.5 58.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.0 5.0 111.1 91.9 0.0 0.0 8.1 2000 26.0 1.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0 22.5 17.5 31.0 108.0 34.3 0.0 0.0 65.7 MEAN 25.5 21.6 30.2 18.1 10.8 1.7 0.5 0.0 0.2 6.4 12.3 23.6 150.9 51.4 20.2 0.4 28.0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 12 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 6 4 3 9 1 0 1 0 0 0 5 1 30 1962 4 5 2 8 2 0 0 0 0 0 1 3 25 1963 0 2 4 2 6 0 0 0 0 0 3 5 22 1964 4 2 4 1 0 0 0 0 0 0 2 3 16 1965 8 1 1 2 1 0 0 0 0 3 1 3 20 1966 4 4 5 0 1 0 0 0 0 5 0 2 21 1967 4 6 0 3 2 0 0 0 0 1 6 1 23 1968 2 3 4 10 3 1 1 0 0 1 4 4 33 1969 8 0 6 7 3 0 0 0 0 0 4 2 30 1970 4 2 3 4 3 0 0 0 0 0 0 3 19 1971 4 3 2 9 5 0 0 0 0 0 6 4 33 1972 8 4 6 4 6 0 0 0 2 0 4 4 38 1973 0 5 3 1 0 0 0 0 0 0 0 1 10 1974 8 6 3 0 0 0 0 0 0 1 0 8 26 1975 3 1 4 4 3 0 0 0 0 0 0 7 22 1976 3 6 4 3 5 0 0 0 0 2 2 4 29 1977 6 1 1 10 2 0 1 0 0 4 4 6 35 1978 2 3 4 0 1 0 0 0 0 0 5 4 19 1979 3 2 2 0 5 4 0 0 0 0 0 8 24 1980 3 7 6 4 0 0 0 0 0 1 3 2 26 1981 5 4 4 4 3 1 0 1 0 6 5 3 36 1982 7 6 10 4 6 0 0 0 0 9 8 6 56 1983 7 2 *** 7 7 *** *** 0 *** 0 1 5 *** 1984 4 3 12 3 4 1 0 0 0 1 4 6 38 1985 4 3 *** 2 2 0 0 1 0 0 8 4 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 1 4 4 2 3 0 3 0 0 5 1 4 27 1988 2 4 4 3 0 0 0 0 0 0 2 0 15 1989 *** 5 5 5 2 0 0 0 0 0 5 3 *** 1990 *** *** *** 1 0 0 1 0 0 0 0 2 *** 1991 5 2 8 3 0 1 0 0 1 2 1 8 31 1992 6 1 4 3 5 1 0 0 0 0 0 7 27 1993 5 4 4 1 3 0 0 *** 0 0 5 0 *** 1994 5 3 3 4 4 0 1 0 1 9 9 3 42 1995 2 1 2 5 3 4 0 0 0 1 0 6 24 1996 6 9 11 4 3 0 0 0 0 0 1 3 37 1997 3 0 7 7 6 4 0 0 0 2 7 4 40 1998 5 5 3 2 2 0 0 1 0 2 0 3 23 1999 9 4 7 0 0 0 0 0 0 0 2 1 23 2000 2 1 4 0 0 0 0 0 0 7 7 5 26 MEAN 4 3 4 4 3 0 0 0 0 2 3 4 27 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 13 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 6 4 3 9 1 0 1 0 0 0 5 1 30 1962 4 5 2 8 2 0 0 0 0 0 1 3 25 1963 0 2 4 2 6 0 0 0 0 0 3 5 22 1964 4 2 4 1 0 0 0 0 0 0 2 3 16 1965 8 1 1 2 1 0 0 0 0 3 1 3 20 1966 4 4 5 0 1 0 0 0 0 5 0 2 21 1967 3 6 0 3 2 0 0 0 0 1 6 1 22 1968 2 3 4 10 3 1 1 0 0 1 3 4 32 1969 8 0 5 7 3 0 0 0 0 0 2 2 27 1970 3 2 2 4 2 0 0 0 0 0 0 3 16 1971 4 3 2 8 2 0 0 0 0 0 6 4 29 1972 7 4 6 4 6 0 0 0 2 0 4 4 37 1973 0 5 3 1 0 0 0 0 0 0 0 1 10 1974 8 6 3 0 0 0 0 0 0 1 0 8 26 1975 3 1 4 4 3 0 0 0 0 0 0 7 22 1976 3 6 4 3 5 0 0 0 0 2 2 4 29 1977 5 1 1 7 2 0 0 0 0 4 3 6 29 1978 2 3 4 0 1 0 0 0 0 0 5 4 19 1979 3 2 1 0 5 3 0 0 0 0 0 8 22 1980 3 6 5 4 0 0 0 0 0 1 2 1 22 1981 4 2 3 1 1 1 0 0 0 1 3 1 17 1982 6 4 7 1 3 0 0 0 0 7 5 4 37 1983 6 0 *** 4 3 *** *** 0 *** 0 1 4 *** 1984 2 3 9 1 3 1 0 0 0 0 3 4 26 1985 3 2 *** 2 0 0 0 0 0 0 5 4 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 1 3 4 2 3 0 3 0 0 5 1 4 26 1988 2 4 4 3 0 0 0 0 0 0 2 0 15 1989 *** 4 5 5 1 0 0 0 0 0 5 3 *** 1990 *** *** *** 1 0 0 1 0 0 0 0 2 *** 1991 5 2 8 3 0 1 0 0 1 2 1 8 31 1992 6 1 4 3 5 1 0 0 0 0 0 7 27 1993 5 4 4 1 3 0 0 *** 0 0 4 0 *** 1994 4 2 3 4 1 0 1 0 0 8 6 3 32 1995 2 1 2 4 3 4 0 0 0 1 0 6 23 1996 6 9 11 3 2 0 0 0 0 0 1 2 34 1997 3 0 6 6 6 4 0 0 0 2 6 4 37 1998 4 3 3 0 2 0 0 1 0 2 0 3 18 1999 5 3 7 0 0 0 0 0 0 0 2 1 18 2000 2 1 4 0 0 0 0 0 0 6 7 5 25 MEAN 4 3 4 3 2 0 0 0 0 1 2 4 23 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 14 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 1 0 2 1 0 0 0 0 0 0 0 1 5 1962 0 0 0 2 0 0 0 0 0 0 1 3 6 1963 0 0 3 0 1 0 0 0 0 0 0 1 5 1964 0 0 0 0 0 0 0 0 0 0 0 2 2 1965 3 1 0 0 0 0 0 0 0 0 0 0 4 1966 0 1 2 0 0 0 0 0 0 2 0 0 5 1967 0 0 0 0 0 0 0 0 0 0 1 0 1 1968 1 1 3 1 0 0 0 0 0 0 0 1 7 1969 5 0 1 1 1 0 0 0 0 0 0 0 8 1970 2 2 0 1 0 0 0 0 0 0 0 2 7 1971 1 1 0 1 0 0 0 0 0 0 1 0 4 1972 1 1 2 1 0 0 0 0 0 0 0 0 5 1973 0 1 1 0 0 0 0 0 0 0 0 0 2 1974 2 2 1 0 0 0 0 0 0 0 0 1 6 1975 2 0 1 1 0 0 0 0 0 0 0 0 4 1976 0 0 2 1 0 0 0 0 0 2 0 1 6 1977 0 0 0 1 1 0 0 0 0 0 1 3 6 1978 0 0 0 0 0 0 0 0 0 0 0 2 2 1979 2 0 1 0 2 0 0 0 0 0 0 2 7 1980 1 3 1 1 0 0 0 0 0 0 0 1 7 1981 1 1 0 1 0 0 0 0 0 0 0 1 4 1982 0 0 0 0 0 0 0 0 0 0 2 0 2 1983 2 0 *** 1 0 *** *** 0 *** 0 0 0 *** 1984 1 0 2 1 1 0 0 0 0 0 0 0 5 1985 0 1 *** 0 0 0 0 0 0 0 1 1 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 0 0 1 0 0 0 0 0 0 0 0 1 2 1988 0 1 2 1 0 0 0 0 0 0 0 0 4 1989 *** 0 1 0 0 0 0 0 0 0 1 2 *** 1990 *** *** *** 0 0 0 0 0 0 0 0 0 *** 1991 0 0 2 0 0 0 0 0 0 1 0 1 4 1992 2 1 1 0 2 0 0 0 0 0 0 0 6 1993 1 1 2 0 0 0 0 *** 0 0 1 0 *** 1994 1 0 1 0 0 0 0 0 0 0 1 0 3 1995 0 0 0 1 1 1 0 0 0 0 0 1 4 1996 1 1 1 1 0 0 0 0 0 0 0 0 4 1997 0 0 2 1 0 0 0 0 0 0 0 2 5 1998 1 2 3 0 1 0 0 0 0 0 0 0 7 1999 1 1 3 0 0 0 0 0 0 0 0 0 5 2000 2 0 0 0 0 0 0 0 0 0 0 1 3 MEAN 1 1 1 0 0 0 0 0 0 0 0 1 4 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 15 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 70 77 79 77 63 55 42 42 52 67 76 48 62 1962 46 75 64 69 44 32 31 31 42 58 70 74 53 1963 78 76 68 57 50 31 30 32 42 63 76 31 53 1964 38 67 54 59 40 29 35 35 52 76 83 52 52 1965 66 82 77 59 46 25 30 34 49 67 77 82 58 1966 80 76 70 56 46 27 31 34 49 68 81 86 59 1967 79 72 82 68 49 33 28 32 50 62 87 53 58 1968 43 78 75 61 45 32 27 32 49 56 78 76 54 1969 57 61 68 63 47 32 32 43 46 49 75 74 54 1970 80 74 70 50 38 30 36 34 40 41 56 76 52 1971 79 80 70 69 54 34 31 28 47 46 75 73 57 1972 81 73 79 66 58 34 29 38 50 44 70 76 58 1973 81 75 69 51 42 29 21 30 39 67 88 83 56 1974 77 78 81 56 42 37 43 43 51 60 81 77 61 1975 77 64 69 60 54 48 42 38 50 64 77 76 60 1976 73 79 81 69 44 39 43 43 51 62 82 81 62 1977 74 69 64 69 54 40 28 38 38 64 75 83 58 1978 78 82 68 55 44 38 35 36 39 49 78 75 56 1979 77 77 69 52 58 42 33 38 43 56 68 77 58 1980 81 77 72 57 39 33 33 35 43 54 71 77 56 1981 81 73 65 55 47 42 36 39 42 59 64 66 56 1982 75 71 69 58 50 37 33 36 42 70 80 85 59 1983 84 81 *** 61 58 *** *** 38 *** 48 59 77 *** 1984 77 77 70 54 55 43 39 37 40 50 73 80 58 1985 72 66 *** 54 42 34 28 39 38 50 71 75 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 63 64 67 57 44 35 38 37 41 63 67 71 54 1988 68 73 56 57 44 37 41 41 40 51 61 64 53 1989 *** 71 64 57 50 34 37 38 38 45 71 67 *** 1990 *** *** *** 56 44 35 40 36 34 51 57 65 *** 1991 74 70 77 59 42 41 42 41 41 69 72 80 59 1992 76 71 69 63 67 45 39 46 46 46 60 74 59 1993 77 70 68 63 65 44 46 *** 37 49 59 60 *** 1994 65 63 65 58 56 41 39 43 46 62 71 61 56 1995 72 *** 62 68 56 50 36 38 45 57 56 76 *** 1996 81 76 74 65 57 42 45 38 38 52 62 71 58 1997 67 62 76 65 61 49 39 39 45 60 87 85 61 1998 80 75 76 63 58 46 46 48 52 61 61 72 62 1999 81 74 84 65 46 33 45 59 42 54 88 78 62 2000 73 74 68 55 43 44 45 47 49 66 70 77 59 MEAN 72 73 71 60 50 38 36 38 44 57 72 72 57 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 16 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 55 68 42 45 18 15 15 18 18 24 37 38 33 1962 46 31 24 31 17 13 16 15 17 22 35 43 26 1963 37 37 33 25 26 13 13 13 17 27 47 49 28 1964 75 37 32 27 17 16 20 23 19 26 46 77 35 1965 76 48 39 32 18 14 12 13 17 32 37 40 32 1966 52 47 34 37 23 13 15 17 19 37 36 50 32 1967 66 50 32 43 30 15 12 17 20 29 46 53 34 1968 53 57 35 34 15 13 12 16 23 29 47 53 32 1969 70 46 32 33 22 12 11 24 25 21 45 39 32 1970 55 43 39 23 17 14 18 21 20 22 25 51 29 1971 50 52 31 39 24 13 10 14 25 27 40 51 31 1972 71 73 56 36 31 14 14 18 16 21 36 62 37 1973 65 50 37 23 16 11 7 14 21 35 47 61 32 1974 70 69 48 29 19 15 14 16 21 29 41 56 36 1975 63 52 44 33 33 19 14 18 17 26 39 56 35 1976 61 67 55 41 22 17 14 16 21 31 51 60 38 1977 61 30 30 34 24 13 11 13 20 33 44 58 31 1978 56 54 39 23 16 12 15 14 16 21 39 43 29 1979 42 32 31 22 34 19 14 16 19 23 26 45 27 1980 41 48 39 30 18 15 15 17 21 30 42 44 30 1981 48 41 27 26 19 19 17 17 20 29 29 33 27 1982 47 38 34 27 24 16 17 17 21 40 43 50 31 1983 53 37 *** 31 26 *** *** 17 *** 23 29 45 *** 1984 41 40 40 26 31 22 21 21 22 25 43 50 32 1985 37 27 *** 23 21 18 15 20 20 26 44 46 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 30 34 38 26 22 17 19 19 20 39 36 43 29 1988 45 46 35 30 20 18 22 20 19 25 31 36 29 1989 *** 47 39 29 24 17 19 19 19 23 45 42 *** 1990 *** *** *** 27 21 19 22 20 18 26 32 40 *** 1991 47 40 51 31 25 23 24 22 20 37 40 49 34 1992 56 40 35 30 36 21 21 23 21 22 30 49 32 1993 51 42 42 32 35 22 27 *** 19 26 39 49 *** 1994 45 43 32 30 24 21 18 24 25 38 48 39 32 1995 34 *** 37 34 26 23 17 17 22 25 20 57 *** 1996 63 37 39 29 26 17 21 17 18 21 28 31 29 1997 32 22 36 32 27 22 17 15 19 25 37 35 27 1998 40 37 35 25 27 21 22 23 22 27 26 42 29 1999 54 44 51 27 18 13 19 17 16 19 45 43 31 2000 37 38 32 21 18 22 20 19 18 28 40 47 28 MEAN 52 44 38 30 23 17 17 18 20 27 38 48 31 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 17 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 66 78 57 51 23 19 20 24 24 30 50 55 41 1962 63 48 30 43 22 16 17 18 20 29 45 58 34 1963 51 37 43 31 36 18 17 15 19 32 59 60 35 1964 63 48 42 37 22 19 23 24 22 31 56 80 39 1965 84 67 55 43 24 16 15 17 22 41 50 59 41 1966 68 55 42 41 27 16 19 18 22 39 47 64 38 1967 75 60 41 49 32 18 15 19 25 43 57 65 42 1968 69 71 46 47 24 18 16 18 31 36 56 63 41 1969 74 63 44 47 27 14 14 26 28 31 54 57 40 1970 70 48 39 33 21 21 20 20 23 31 34 63 35 1971 66 63 43 44 31 16 14 16 30 33 57 65 40 1972 79 75 62 42 36 19 18 23 25 32 54 72 45 1973 74 59 49 30 21 13 12 18 27 43 59 74 40 1974 75 78 62 41 26 21 18 18 26 40 68 62 45 1975 69 60 49 40 41 27 19 24 24 33 52 69 42 1976 71 69 64 45 33 24 18 18 26 42 67 66 45 1977 64 47 42 45 35 21 14 20 23 37 58 68 40 1978 63 61 51 34 20 18 17 19 21 31 59 61 38 1979 59 54 44 29 37 25 16 19 22 32 40 59 36 1980 55 57 49 39 22 17 15 20 27 35 45 54 36 1981 51 48 34 32 23 20 18 20 27 36 36 39 32 1982 54 45 41 30 30 18 19 19 23 54 61 64 38 1983 62 59 *** 39 31 *** *** 19 *** 28 31 52 *** 1984 58 54 54 35 36 25 26 26 29 38 53 66 42 1985 55 41 *** 28 24 21 18 25 23 31 52 55 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 41 41 44 31 27 20 23 22 22 44 42 47 34 1988 52 52 39 37 25 20 23 26 24 32 33 41 34 1989 *** 51 45 36 27 18 21 22 25 30 58 58 *** 1990 *** *** *** 34 28 24 28 29 20 39 52 60 *** 1991 64 54 62 40 28 27 29 32 30 56 63 71 46 1992 70 52 46 38 42 26 29 29 32 41 49 65 43 1993 78 60 54 39 41 29 34 *** 24 43 52 53 *** 1994 58 49 40 37 32 21 24 32 39 59 63 58 43 1995 55 *** 47 40 39 30 22 26 32 40 36 66 *** 1996 73 52 48 34 32 21 28 27 29 37 52 55 41 1997 50 32 42 41 37 29 25 21 22 43 50 63 38 1998 62 57 66 56 46 39 29 37 35 51 57 69 50 1999 78 63 62 31 25 17 25 24 25 33 70 72 44 2000 51 56 37 27 26 26 25 29 30 52 59 60 40 MEAN 64 56 48 38 30 21 21 23 26 38 52 61 40 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 18 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 19 14 1 0 0 0 0 0 0 0 5 13 52 1962 21 5 0 0 0 0 0 0 0 0 10 11 47 1963 9 4 4 0 0 0 0 0 0 0 2 31 50 1964 31 5 0 0 0 0 0 0 0 0 4 31 71 1965 27 4 3 4 0 0 0 0 0 0 0 4 42 1966 0 3 0 0 0 0 0 0 0 0 3 15 21 1967 14 12 4 1 0 0 0 0 0 0 4 27 62 1968 27 8 3 0 0 0 0 0 0 0 0 0 38 1969 21 7 0 0 0 0 0 0 0 0 10 9 47 1970 16 3 0 0 0 0 0 0 0 0 0 17 36 1971 22 11 1 0 0 0 0 0 0 0 0 13 47 1972 25 21 0 0 0 0 0 0 0 0 3 22 71 1973 28 5 2 0 0 0 0 0 0 0 3 15 53 1974 31 24 2 0 0 0 0 0 0 0 0 26 83 1975 25 19 3 0 0 0 0 0 0 0 0 21 68 1976 30 12 9 0 0 0 0 0 0 0 0 7 58 1977 27 9 0 0 0 0 0 0 0 0 0 7 43 1978 20 1 0 0 0 0 0 0 0 0 4 4 29 1979 9 1 3 0 0 0 0 0 0 0 8 14 35 1980 25 14 5 0 0 0 0 0 0 0 0 5 49 1981 12 3 0 0 0 0 0 0 0 0 1 1 17 1982 10 17 1 0 0 0 0 0 0 0 2 19 49 1983 22 12 *** 0 0 *** *** 0 *** 0 0 11 *** 1984 20 17 0 0 0 0 0 0 0 0 0 19 56 1985 12 6 *** 0 0 0 0 0 0 0 0 7 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 15 11 1 0 0 0 0 0 0 0 0 9 36 1988 20 8 0 0 0 0 0 0 0 0 6 4 38 1989 *** 14 2 0 0 0 0 0 0 0 0 0 *** 1990 *** *** *** 0 0 0 0 0 0 0 0 6 *** 1991 10 16 0 0 0 0 0 0 0 0 0 10 36 1992 24 12 5 0 0 0 0 0 0 0 1 5 47 1993 18 6 0 0 0 0 0 *** 0 0 0 2 *** 1994 10 4 0 0 0 0 0 0 0 0 0 14 28 1995 4 *** 0 0 0 0 0 0 0 0 4 8 *** 1996 17 1 0 0 0 0 0 0 0 0 0 4 22 1997 4 12 2 0 0 0 0 0 0 0 0 7 25 1998 10 3 0 0 0 0 0 0 0 0 0 0 13 1999 4 1 0 0 0 0 0 0 0 0 0 6 11 2000 14 2 0 0 0 0 0 0 0 0 0 4 20 MEAN 18 9 1 0 0 0 0 0 0 0 2 11 41 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 19 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 0 4 0 0 0 0 0 4 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 4 1 0 0 0 0 5 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 12 0 0 0 0 0 12 1968 0 0 0 0 0 0 12 8 0 0 0 0 20 1969 0 0 0 0 0 0 8 0 0 0 0 0 8 1970 0 0 0 0 0 0 2 9 0 0 0 0 11 1971 0 0 0 0 0 0 3 5 0 0 0 0 8 1972 0 0 0 0 0 5 29 5 0 0 0 0 39 1973 0 0 0 0 0 3 27 11 0 0 0 0 41 1974 0 0 0 0 0 0 6 8 0 0 0 0 14 1975 0 0 0 0 0 0 28 5 0 0 0 0 33 1976 0 0 0 0 0 0 5 3 0 0 0 0 8 1977 0 0 0 0 0 1 20 0 0 0 0 0 21 1978 0 0 0 0 0 0 1 0 0 0 0 0 1 1979 0 0 0 0 0 0 2 0 0 0 0 0 2 1980 0 0 0 0 0 0 0 0 0 0 0 0 0 1981 0 0 0 0 0 0 2 0 0 0 0 0 2 1982 0 0 0 0 0 0 0 4 0 0 0 0 4 1983 0 0 *** 0 0 *** *** 6 *** 0 0 0 *** 1984 0 0 0 0 0 2 1 4 0 0 0 0 7 1985 0 0 *** 0 0 1 8 0 0 0 0 0 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 0 0 0 0 0 0 0 2 0 0 0 0 2 1988 0 0 0 0 0 0 9 1 0 0 0 0 10 1989 *** 0 0 0 0 0 12 3 0 0 0 0 *** 1990 *** *** *** 0 0 3 16 9 0 0 0 0 *** 1991 0 0 0 0 0 0 7 1 0 0 0 0 8 1992 0 0 0 0 0 2 11 3 0 0 0 0 16 1993 0 0 0 0 0 0 9 *** 0 0 0 0 *** 1994 0 0 0 0 0 2 13 12 0 0 0 0 27 1995 0 *** 0 0 0 0 14 0 0 0 0 0 *** 1996 0 0 0 0 0 1 3 3 0 0 0 0 7 1997 0 0 0 0 0 0 22 1 0 0 0 0 23 1998 0 0 0 0 0 0 12 7 0 0 0 0 19 1999 0 0 0 0 0 1 13 1 0 0 0 0 15 2000 0 0 0 0 2 5 17 8 1 0 0 0 33 MEAN 0 0 0 0 0 1 9 3 0 0 0 0 13 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 20 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 4 4 1964 11 0 0 0 0 0 0 0 0 0 0 2 13 1965 2 0 0 0 0 0 0 0 0 0 0 0 2 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 6 0 0 0 0 0 0 0 0 0 0 0 6 1970 0 0 0 0 0 0 0 0 0 0 0 1 1 1971 0 0 0 0 0 0 0 0 0 0 0 0 0 1972 5 8 0 0 0 0 0 0 0 0 0 3 16 1973 1 0 0 0 0 0 0 0 0 0 0 0 1 1974 4 1 0 0 0 0 0 0 0 0 0 0 5 1975 2 0 0 0 0 0 0 0 0 0 0 0 2 1976 0 0 0 0 0 0 0 0 0 0 0 0 0 1977 4 0 0 0 0 0 0 0 0 0 0 0 4 1978 0 0 0 0 0 0 0 0 0 0 0 0 0 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 1983 0 0 *** 0 0 *** *** 0 *** 0 0 0 *** 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 *** 0 0 0 0 0 0 0 0 0 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 0 0 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 *** 1990 *** *** *** 0 0 0 0 0 0 0 0 1 *** 1991 0 0 0 0 0 0 0 0 0 0 0 0 0 1992 1 0 0 0 0 0 0 0 0 0 0 0 1 1993 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 *** 1996 2 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 1 0 0 0 0 0 0 0 0 0 0 0 1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 21 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 0 8 25 31 30 27 2 0 0 123 1962 0 0 0 0 13 26 31 29 20 1 0 0 120 1963 0 0 0 0 9 30 31 30 23 0 0 0 123 1964 0 0 0 0 25 30 31 30 11 0 0 0 127 1965 0 0 0 0 24 30 31 31 16 0 0 0 132 1966 0 0 0 0 9 30 31 31 11 0 0 0 112 1967 0 0 0 0 2 28 31 31 5 0 0 0 97 1968 0 0 0 0 5 28 31 31 7 0 0 0 102 1969 0 0 0 0 15 28 31 30 23 0 0 0 127 1970 0 0 0 0 16 30 31 31 13 3 0 0 124 1971 0 0 0 0 10 27 31 31 14 0 0 0 113 1972 0 0 0 0 1 30 31 30 19 0 0 0 111 1973 0 0 0 0 9 30 31 31 5 0 0 0 106 1974 0 0 0 0 0 11 31 31 6 0 0 0 79 1975 0 0 0 0 8 29 31 30 19 0 0 0 117 1976 0 0 0 0 0 10 31 31 6 0 0 0 78 1977 0 0 0 0 6 26 31 30 9 0 0 0 102 1978 0 0 0 0 13 27 31 31 30 3 0 0 135 1979 0 0 0 0 5 25 31 31 24 2 0 0 118 1980 0 0 0 0 12 29 31 31 18 1 0 0 122 1981 0 0 0 0 10 23 31 31 20 0 0 0 115 1982 0 0 0 0 11 30 31 31 26 0 0 0 129 1983 0 0 *** 0 11 *** *** 30 *** 3 0 0 *** 1984 0 0 0 0 1 27 31 31 25 0 0 0 115 1985 0 0 *** 0 14 29 31 30 30 3 0 0 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 0 0 0 0 24 30 28 31 29 0 0 0 142 1988 0 0 0 0 18 30 31 31 27 1 0 0 138 1989 *** 0 0 0 13 30 31 31 24 6 0 0 *** 1990 *** *** *** 1 19 29 31 31 30 5 0 0 *** 1991 0 0 0 4 12 30 31 31 24 0 0 0 132 1992 0 0 0 1 2 26 31 29 21 1 0 0 111 1993 0 0 0 0 11 29 31 *** 15 4 0 0 *** 1994 0 0 0 2 11 30 31 30 14 0 0 0 118 1995 0 *** 0 0 6 21 31 31 25 10 0 0 *** 1996 0 0 0 0 12 30 *** 31 30 *** 0 0 *** 1997 0 0 0 0 9 30 31 31 29 10 0 0 140 1998 0 0 0 3 17 30 29 31 29 8 0 0 147 1999 0 0 0 0 24 30 31 31 30 20 0 0 166 2000 0 0 0 10 31 29 31 31 30 2 0 0 164 MEAN 0 0 0 1 11 27 31 31 20 2 0 0 123 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 22 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 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 1 0 0 0 0 0 1 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 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 0 0 0 0 0 1975 0 0 0 0 0 0 0 0 0 0 0 0 0 1976 0 0 0 0 0 0 0 0 0 0 0 0 0 1977 0 0 0 0 0 0 2 0 0 0 0 0 2 1978 0 0 0 0 0 0 0 0 0 0 0 0 0 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 1983 0 0 *** 0 0 *** *** 0 *** 0 0 0 *** 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 *** 0 0 0 0 0 0 0 0 0 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 0 0 0 0 0 0 0 0 0 0 0 0 0 1988 0 0 0 0 0 0 6 0 0 0 0 0 6 1989 *** 0 0 0 0 0 4 0 0 0 0 0 *** 1990 *** *** *** 0 0 0 0 0 0 0 0 0 *** 1991 0 0 0 0 0 0 4 2 0 0 0 0 6 1992 0 0 0 0 0 0 0 0 0 0 0 0 0 1993 0 0 0 0 0 0 0 *** 0 0 0 0 *** 1994 0 0 0 0 0 0 13 12 0 0 0 0 25 1995 0 *** 0 0 0 0 7 0 0 0 0 0 *** 1996 0 0 0 0 0 0 *** 1 0 *** 0 0 *** 1997 0 0 0 0 0 0 22 4 0 0 0 0 26 1998 0 0 0 0 0 0 8 6 0 0 0 0 14 1999 0 0 0 0 0 2 8 0 0 0 0 0 10 2000 0 0 0 0 0 0 9 0 0 0 0 0 9 MEAN 0 0 0 0 0 0 2 1 0 0 0 0 3 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 23 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 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 0 0 0 0 0 1975 0 0 0 0 0 0 0 0 0 0 0 0 0 1976 0 0 0 0 0 0 0 0 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 0 0 1979 0 0 0 0 0 0 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 1983 0 0 *** 0 0 *** *** 0 *** 0 0 0 *** 1984 0 0 0 0 0 0 0 0 0 0 0 0 0 1985 0 0 *** 0 0 0 0 0 0 0 0 0 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 0 0 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 *** 1990 *** *** *** 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 0 0 1993 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 *** 1996 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 NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 23 8 1 0 0 0 0 0 3 8 31 101 10 29 4 4 1962 29 17 7 0 0 0 0 0 0 0 16 26 95 11 12 3 17 1963 23 16 12 0 0 0 0 0 0 0 14 31 96 11 17 3 18 1964 31 8 0 0 0 0 0 0 0 0 16 31 86 11 15 2 10 1965 28 9 5 5 0 0 0 0 0 0 1 16 64 11 11 4 10 1966 0 11 5 0 0 0 0 0 0 0 3 26 45 11 28 3 25 1967 31 28 21 5 0 0 0 0 0 0 12 29 126 11 11 4 9 1968 31 23 8 0 0 0 0 0 0 0 8 21 91 11 19 3 26 1969 29 17 1 1 0 0 0 0 0 0 20 26 94 11 11 4 14 1970 27 18 5 0 0 0 0 0 0 0 4 27 81 11 25 3 27 1971 31 25 6 1 0 0 0 0 0 0 1 26 90 11 15 4 3 1972 31 26 6 0 0 0 0 0 0 1 18 29 111 10 31 3 13 1973 31 16 5 0 0 0 0 0 0 0 13 29 94 11 6 3 10 1974 31 25 9 0 0 0 0 0 0 1 11 30 107 10 22 3 12 1975 31 22 15 1 0 0 0 0 0 0 0 30 99 12 2 4 4 1976 31 29 11 0 0 0 0 0 0 0 3 25 99 11 20 3 12 1977 31 23 5 0 0 0 0 0 0 0 11 14 84 11 15 3 16 1978 29 19 4 1 0 0 0 0 0 0 14 18 85 11 4 4 15 1979 29 21 11 0 0 0 0 0 0 0 14 29 104 11 17 3 11 1980 29 28 11 0 0 0 0 0 0 0 1 19 88 11 27 3 19 1981 23 16 3 1 0 0 0 0 0 0 7 23 73 11 23 4 2 1982 30 27 15 0 0 0 0 0 0 0 17 31 120 11 12 3 30 1983 28 22 *** 2 0 *** *** 0 *** 1 9 22 *** 10 23 4 3 1984 30 27 2 0 0 0 0 0 0 5 4 30 98 10 21 3 17 1985 23 24 *** 0 0 0 0 0 0 0 1 25 *** 11 30 2 28 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1987 27 23 13 2 0 0 0 0 0 0 4 28 97 11 27 4 7 1988 30 25 4 0 0 0 0 0 0 0 12 23 94 11 15 3 25 1989 *** 25 3 0 0 0 0 0 0 0 4 22 *** 11 23 3 31 1990 *** *** *** 0 0 0 0 0 0 0 1 20 *** 11 30 12 31 1991 24 23 9 0 0 0 0 0 0 0 7 17 80 11 17 3 13 1992 31 26 16 0 0 0 0 0 0 0 6 23 102 11 20 3 28 1993 30 18 9 0 0 0 0 *** 0 0 6 20 *** 11 15 3 25 1994 23 22 9 0 0 0 0 0 0 0 4 25 83 11 11 3 19 1995 23 *** 7 0 0 0 0 0 0 0 6 25 *** 11 22 3 8 1996 28 12 6 1 0 0 0 0 0 0 5 18 70 11 13 4 6 1997 26 22 15 1 0 0 0 0 0 0 3 24 91 11 25 4 12 1998 26 17 4 0 0 0 0 0 0 0 0 14 61 12 5 3 5 1999 21 11 4 0 0 0 0 0 0 0 3 23 62 11 25 3 19 2000 22 19 7 0 0 0 0 0 0 0 5 20 73 11 14 3 11 MEAN 27 21 8 1 0 0 0 0 0 0 7 24 88 10 21 4 15 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 25 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 1.9 3.4 9.2 11.8 20.5 24.7 28.2 25.7 24.4 15.7 8.6 5.0 14.9 1962 3.0 7.2 12.8 13.6 20.8 25.8 27.7 26.3 22.6 17.2 8.2 4.7 15.8 1963 5.9 8.6 9.7 15.4 18.0 27.7 28.1 28.2 24.2 14.5 6.7 0.7 15.6 1964 -5.3 9.5 14.0 14.6 23.7 28.0 30.9 28.4 22.3 14.7 6.9 -2.4 15.4 1965 -0.7 7.1 9.8 13.8 23.5 28.9 29.7 27.1 21.5 13.9 10.4 7.7 16.1 1966 7.7 8.5 11.7 15.0 21.5 27.9 29.5 27.3 21.9 15.9 10.5 5.9 16.9 1967 2.9 4.5 7.6 11.6 18.7 25.5 30.4 28.8 20.5 14.1 7.2 2.4 14.5 1968 1.8 3.1 8.7 12.9 20.1 26.1 29.5 28.2 21.4 16.0 9.5 6.3 15.3 1969 -0.3 5.4 12.6 14.5 21.8 27.9 29.5 27.0 21.0 18.4 6.5 5.6 15.8 1970 2.0 6.4 10.1 17.2 22.2 27.7 29.1 29.0 23.3 16.9 11.2 3.0 16.5 1971 2.6 3.4 10.1 12.7 21.9 27.1 29.7 29.1 21.4 14.6 9.9 3.8 15.5 1972 -0.9 -1.5 7.2 14.7 17.9 27.1 30.1 26.3 22.0 17.2 9.3 1.4 14.2 1973 -0.1 6.1 10.5 16.5 21.9 27.9 31.1 28.3 21.9 12.6 7.3 3.6 15.6 1974 -1.0 -1.5 7.4 15.2 20.9 25.4 29.1 28.0 22.3 13.3 5.8 1.9 13.9 1975 1.0 3.3 7.6 13.6 19.7 26.3 30.4 26.2 22.0 15.0 9.6 2.7 14.8 1976 2.2 2.7 5.3 12.9 19.9 24.7 29.2 28.0 22.3 13.3 6.9 4.3 14.3 1977 -0.3 6.7 12.5 14.7 20.3 26.9 30.5 25.6 23.1 15.6 8.8 5.9 15.9 1978 2.4 5.8 9.3 15.7 21.3 26.1 28.0 28.0 24.5 18.3 7.9 6.7 16.2 1979 4.8 6.8 8.5 16.9 19.7 26.3 30.5 26.2 23.9 17.5 9.8 4.1 16.3 1980 3.3 4.1 9.1 16.5 22.1 27.5 29.3 28.8 23.5 17.8 11.1 5.7 16.6 1981 3.4 6.0 11.7 15.8 21.1 25.3 28.2 27.7 22.6 15.8 11.6 7.4 16.4 1982 3.4 3.0 8.1 17.2 22.3 27.7 27.7 28.5 23.8 15.5 8.2 2.5 15.7 1983 1.2 4.1 ****** 14.2 21.9 ****** ****** 29.8 ****** 16.1 12.1 5.2 ****** 1984 3.4 4.5 10.8 16.5 18.6 27.5 28.6 29.8 23.9 15.5 10.6 2.3 16.0 1985 6.1 6.3 ****** 17.2 21.9 28.6 31.1 26.8 25.4 17.7 11.7 5.1 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 6.3 8.4 9.4 16.2 23.6 27.6 28.3 27.9 24.7 14.7 11.6 5.9 17.0 1988 3.3 5.1 11.1 15.9 22.7 27.0 29.9 28.2 24.2 18.2 11.4 6.8 17.0 1989 ****** 3.7 9.8 15.6 21.6 28.2 30.2 28.1 23.9 18.2 10.3 6.1 ****** 1990 ****** ****** ****** 15.8 23.3 28.4 29.6 29.8 25.1 17.7 12.5 6.4 ****** 1991 4.3 4.8 9.8 17.0 21.7 27.2 30.0 28.5 24.1 16.4 10.8 4.8 16.6 1992 -0.1 3.4 6.6 14.1 18.6 25.7 29.7 26.7 22.0 16.6 11.5 5.6 15.0 1993 1.6 5.3 8.4 15.6 19.9 27.1 29.1 ****** 22.9 16.0 10.3 7.0 ****** 1994 5.2 5.6 10.8 16.9 20.8 27.0 30.7 29.9 21.0 16.1 11.1 4.1 16.6 1995 6.8 ****** 10.9 15.5 20.5 25.6 31.4 29.2 24.3 16.8 11.7 2.5 ****** 1996 -0.1 7.6 8.7 15.6 22.0 27.4 28.0 28.3 25.6 17.6 10.3 7.5 16.5 1997 5.5 6.0 8.1 14.7 20.5 26.8 32.1 29.6 24.5 19.2 9.9 4.7 16.8 1998 3.4 6.6 10.5 17.0 21.3 27.3 29.8 29.0 25.5 18.1 13.6 10.0 17.7 1999 4.8 8.7 10.1 16.7 23.5 29.1 29.7 29.0 25.6 19.9 9.5 4.8 17.6 2000 4.9 6.4 10.6 20.4 25.2 27.4 30.3 28.9 26.3 18.5 10.3 5.0 17.8 MEAN 2.6 5.3 9.7 15.3 21.2 27.0 29.6 28.1 23.3 16.3 9.8 4.7 16.1 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 26 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 -4.8 -0.9 0.3 2.1 0.9 2.9 4.4 4.5 4.4 0.3 -1.1 -5.9 0.6 1962 -6.9 -3.4 -2.8 0.8 -0.6 -0.3 2.4 1.4 0.7 0.4 -2.8 -3.4 -1.2 1963 -3.3 -2.7 -2.1 -0.3 1.9 1.9 1.7 1.5 1.7 0.0 -1.0 -10.6 -0.9 1964 -12.9 -1.0 0.8 0.2 2.2 3.3 8.2 7.2 2.8 0.7 -0.7 -7.5 0.3 1965 -4.6 0.5 0.9 1.2 3.0 1.7 2.5 1.6 1.1 1.7 0.8 -0.2 0.8 1966 1.5 0.4 0.0 2.4 2.6 0.1 4.1 3.1 2.1 3.6 0.7 -0.5 1.7 1967 -1.7 -3.0 -3.6 1.6 2.6 0.9 2.3 4.7 1.5 1.2 -0.0 -5.6 0.1 1968 -6.7 -2.8 -1.8 0.7 -1.2 0.4 1.9 3.3 3.7 1.8 1.6 -0.3 0.1 1969 -5.9 -3.0 0.7 2.5 2.5 0.2 1.8 6.5 2.7 0.8 -2.1 -3.3 0.3 1970 -3.9 -3.6 -1.6 0.0 -1.1 2.7 6.0 5.7 2.2 -1.2 -3.9 -4.3 -0.2 1971 -4.1 -3.7 -1.8 1.3 4.6 1.1 1.3 2.4 3.6 -1.4 0.5 -3.3 0.0 1972 -4.7 -5.9 0.7 2.7 3.5 2.2 3.4 4.5 1.9 -0.7 -1.1 -3.9 0.2 1973 -4.8 -1.8 0.1 -0.7 0.1 -0.6 -2.0 2.7 2.4 1.2 0.3 -1.1 -0.3 1974 -5.5 -5.5 0.3 1.7 1.1 2.3 4.8 4.9 3.9 -0.0 -1.4 -4.5 0.2 1975 -4.3 -4.4 -1.9 0.4 4.8 6.6 6.3 4.5 1.9 0.4 0.2 -3.1 0.9 1976 -3.2 -2.1 -0.9 2.4 2.2 3.2 4.8 4.9 3.9 0.5 0.7 -1.1 1.3 1977 -6.0 -4.7 -0.3 2.5 3.9 2.5 1.1 1.9 2.4 2.3 0.7 0.2 0.5 1978 -3.7 -0.5 -0.5 -0.0 -0.6 1.1 3.0 3.7 2.0 0.9 -0.6 -1.4 0.3 1979 -3.3 -2.9 -3.1 -0.2 5.4 5.4 4.4 3.1 2.9 1.5 -2.8 -3.7 0.6 1980 -4.7 -3.5 -0.7 1.9 0.8 2.4 3.7 5.3 4.1 3.0 1.1 -2.5 0.9 1981 -4.3 -3.4 -2.2 -0.3 1.1 3.7 4.6 4.9 2.8 1.7 -2.0 -4.2 0.2 1982 -4.4 -7.0 -3.5 1.7 4.7 3.5 3.8 5.0 3.5 5.4 0.2 -3.8 0.8 1983 -5.0 -4.3 ****** 0.6 5.6 ****** ****** 6.3 ****** -1.3 -2.4 -3.4 ****** 1984 -4.8 -4.4 0.6 1.0 3.8 7.1 7.8 8.6 4.7 0.1 1.5 -4.1 1.8 1985 -3.3 -6.5 ****** 0.1 1.9 5.1 5.1 5.8 4.3 1.4 2.4 -3.0 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 -5.9 -3.5 -1.6 0.4 4.2 4.4 5.9 5.9 3.7 2.9 -0.1 -3.4 1.1 1988 -5.4 -3.4 -2.0 1.6 2.8 4.2 9.0 7.5 3.1 1.6 -2.2 -4.5 1.0 1989 ****** -4.8 -1.1 1.1 3.3 3.7 7.5 6.2 2.6 0.4 1.6 -2.6 ****** 1990 ****** ****** ****** 0.4 4.0 5.9 9.1 8.6 2.3 2.1 0.6 -2.9 ****** 1991 -3.1 -4.2 2.6 3.4 3.0 7.3 10.6 9.2 4.1 6.1 2.3 -1.6 3.3 1992 -5.9 -5.9 -4.2 0.3 6.1 5.6 9.2 7.8 3.6 0.3 -0.6 -1.9 1.2 1993 -4.5 -3.3 -1.5 1.9 7.0 7.6 11.7 ****** 1.8 0.9 -0.5 -2.3 ****** 1994 -3.2 -4.0 -2.1 2.7 4.4 5.6 8.4 11.2 4.9 5.8 3.1 -5.2 2.6 1995 -3.0 ****** -0.0 3.0 5.5 6.4 7.6 7.4 5.8 1.7 -4.1 -3.6 ****** 1996 -4.9 -2.0 -1.6 1.1 5.2 4.5 8.5 6.7 4.6 1.0 -1.8 -2.8 1.5 1997 -5.6 -9.1 -2.9 1.6 5.3 7.7 9.1 5.6 3.3 4.6 0.8 -3.3 1.4 1998 -4.8 -2.3 1.9 4.5 7.3 9.7 10.4 11.2 8.1 4.5 1.4 2.1 4.5 1999 -0.7 0.6 3.0 1.1 2.8 3.0 8.4 8.1 3.3 1.9 2.9 -2.2 2.7 2000 -5.7 -2.8 -2.3 2.5 4.3 7.2 9.5 8.9 6.8 6.2 0.9 -2.6 2.7 MEAN -4.5 -3.4 -0.9 1.3 3.1 3.7 5.6 5.6 3.3 1.7 -0.2 -3.1 1.0 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 27 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 3.49 4.58 4.99 5.49 5.31 5.90 6.46 6.48 6.31 4.74 4.32 3.22 5.11 1962 3.13 3.67 3.84 5.04 4.50 4.59 5.48 5.08 4.84 4.76 3.95 3.69 4.38 1963 3.69 3.88 4.11 4.56 5.33 5.31 5.20 5.09 5.22 4.60 4.35 2.76 4.51 1964 2.23 4.39 5.00 4.70 5.39 5.80 8.42 7.89 5.63 4.84 4.47 3.11 5.16 1965 3.71 4.82 4.94 5.08 5.69 5.15 5.47 5.19 4.99 5.22 4.89 4.57 4.98 1966 5.16 4.79 4.67 5.59 5.67 4.90 6.32 5.89 5.34 6.12 4.87 4.57 5.32 1967 4.23 3.84 3.71 5.38 5.76 4.94 5.41 6.42 5.14 5.03 4.67 3.42 4.83 1968 3.26 3.95 4.10 4.95 4.39 4.80 5.28 5.81 6.06 5.25 5.25 4.60 4.81 1969 3.46 3.88 4.91 5.62 5.67 4.77 5.29 7.46 5.75 4.97 4.20 3.75 4.98 1970 3.59 3.77 4.30 4.79 4.38 5.70 7.04 7.28 5.47 4.39 3.55 3.53 4.82 1971 3.49 3.62 4.17 5.27 6.61 5.10 5.11 5.45 6.19 4.27 4.89 3.74 4.83 1972 3.44 3.25 4.95 5.71 6.10 5.42 5.97 6.32 5.31 4.46 4.36 3.61 4.91 1973 3.40 4.17 4.75 4.43 4.67 4.41 4.07 5.56 5.45 5.01 4.73 4.35 4.58 1974 3.32 3.32 4.79 5.21 5.03 5.55 6.71 6.60 6.12 4.64 4.21 3.42 4.91 1975 3.50 3.55 4.10 4.92 6.82 7.49 7.30 6.35 5.33 4.77 4.71 3.79 5.22 1976 3.80 4.09 4.45 5.54 5.43 5.91 6.69 6.63 6.12 4.84 4.89 4.32 5.23 1977 3.14 3.29 4.68 5.64 6.20 5.68 5.20 5.36 5.46 5.47 4.92 4.83 4.99 1978 3.68 4.51 4.54 4.63 4.48 5.10 5.76 6.05 5.32 4.92 4.47 4.24 4.81 1979 3.69 3.78 3.74 4.68 6.88 6.78 6.28 5.74 5.69 5.16 3.79 3.61 4.98 1980 3.32 3.66 4.52 5.54 4.91 5.51 6.05 6.68 6.21 5.75 5.03 3.89 5.09 1981 3.42 3.71 3.99 4.63 5.11 6.08 6.40 6.52 5.73 5.25 4.06 3.41 4.86 1982 3.39 2.82 3.66 5.32 6.51 5.98 6.06 6.61 5.96 6.87 4.89 3.59 5.14 1983 3.29 3.46 ****** 4.90 6.95 ****** ****** 7.21 ****** 4.27 3.94 3.70 ****** 1984 3.29 3.45 5.04 5.13 6.16 7.64 8.03 8.61 6.54 4.75 5.22 3.50 5.61 1985 3.75 2.96 ****** 4.71 5.32 6.62 6.61 6.98 6.33 5.23 5.64 3.82 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 3.05 3.65 4.20 4.86 6.27 6.29 7.06 7.03 6.05 5.76 4.65 3.70 5.21 1988 3.16 3.67 4.11 5.36 5.70 6.24 8.70 7.90 5.79 5.29 4.08 3.37 5.28 1989 ****** 3.34 4.38 5.12 5.88 6.10 7.83 7.17 5.64 4.80 5.38 3.95 ****** 1990 ****** ****** ****** 4.90 6.20 7.17 8.85 8.58 5.51 5.50 4.94 3.88 ****** 1991 3.82 3.53 5.77 6.06 5.91 7.83 9.78 9.03 6.29 7.19 5.61 4.34 6.26 1992 3.10 3.09 3.54 4.90 7.27 7.07 8.90 8.08 6.11 4.93 4.59 4.23 5.48 1993 3.45 3.85 4.37 5.46 7.69 8.06 10.49 ****** 5.30 5.13 4.65 4.15 ****** 1994 3.82 3.53 4.10 5.75 6.41 6.91 8.47 10.20 6.67 7.16 5.97 3.34 6.03 1995 3.82 ****** 4.71 5.87 6.92 7.44 7.95 7.79 7.03 5.32 3.53 3.66 ****** 1996 3.38 4.08 4.30 5.16 6.79 6.63 8.39 7.54 6.56 5.07 4.18 3.85 5.49 1997 3.12 2.45 3.87 5.42 6.85 8.06 8.93 7.04 5.99 6.48 4.95 3.69 5.57 1998 3.36 4.01 5.53 6.70 7.93 9.31 9.57 10.22 8.30 6.50 5.26 5.59 6.86 1999 4.62 5.02 5.85 5.28 5.85 5.81 8.42 8.53 6.13 5.42 5.78 4.05 5.90 2000 3.28 3.89 4.15 5.64 6.34 7.82 9.08 8.78 7.63 7.25 5.08 3.98 6.08 MEAN 3.51 3.77 4.47 5.23 5.93 6.21 7.08 7.03 5.93 5.32 4.69 3.87 5.25 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 28 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 4.62 6.07 6.63 7.29 7.08 7.89 8.66 8.68 8.44 6.32 5.74 4.27 6.81 1962 4.15 4.88 5.12 6.70 6.02 6.16 7.35 6.82 6.48 6.36 5.26 4.89 5.85 1963 4.91 5.15 5.47 6.08 7.12 7.13 6.99 6.84 7.00 6.13 5.77 3.66 6.02 1964 2.94 5.84 6.66 6.27 7.21 7.79 11.27 10.55 7.53 6.46 5.94 4.11 6.88 1965 4.90 6.40 6.57 6.77 7.61 6.93 7.35 6.97 6.68 6.95 6.50 6.07 6.64 1966 6.84 6.36 6.22 7.45 7.57 6.57 8.48 7.90 7.14 8.14 6.47 6.06 7.10 1967 5.61 5.09 4.93 7.14 7.68 6.63 7.27 8.61 6.88 6.70 6.19 4.53 6.44 1968 4.32 5.24 5.45 6.58 5.87 6.45 7.09 7.79 8.09 7.00 6.97 6.10 6.41 1969 4.58 5.15 6.53 7.48 7.58 6.40 7.11 9.97 7.68 6.63 5.58 4.98 6.64 1970 4.75 5.00 5.72 6.39 5.86 7.64 9.44 9.74 7.33 5.86 4.73 4.67 6.43 1971 4.63 4.79 5.54 7.01 8.82 6.85 6.86 7.33 8.26 5.69 6.49 4.96 6.44 1972 4.55 4.30 6.56 7.59 8.13 7.27 8.01 8.47 7.11 5.96 5.80 4.78 6.54 1973 4.50 5.53 6.32 5.92 6.25 5.93 5.49 7.47 7.30 6.67 6.28 5.77 6.12 1974 4.38 4.39 6.35 6.94 6.73 7.43 8.99 8.84 8.18 6.18 5.59 4.52 6.54 1975 4.63 4.71 5.45 6.55 9.08 10.00 9.78 8.51 7.13 6.37 6.25 5.02 6.96 1976 5.03 5.41 5.90 7.36 7.26 7.91 8.96 8.88 8.18 6.44 6.49 5.72 6.96 1977 4.16 4.37 6.23 7.50 8.27 7.61 6.99 7.18 7.31 7.28 6.54 6.40 6.65 1978 4.88 5.98 6.03 6.18 5.99 6.83 7.73 8.11 7.13 6.58 5.94 5.63 6.42 1979 4.89 5.02 4.97 6.24 9.17 9.08 8.43 7.69 7.62 6.89 5.04 4.78 6.65 1980 4.40 4.85 6.01 7.38 6.57 7.39 8.12 8.96 8.31 7.67 6.68 5.16 6.79 1981 4.54 4.93 5.32 6.18 6.83 8.14 8.58 8.74 7.66 7.00 5.41 4.53 6.49 1982 4.49 3.74 4.86 7.09 8.70 8.01 8.14 8.86 7.98 9.13 6.49 4.75 6.85 1983 4.35 4.59 ****** 6.53 9.27 ****** ****** 9.67 ****** 5.70 5.25 4.91 ****** 1984 4.37 4.57 6.70 6.84 8.22 10.22 10.74 11.51 8.75 6.34 6.93 4.64 7.49 1985 4.98 3.94 ****** 6.29 7.12 8.88 8.87 9.34 8.48 6.99 7.50 5.07 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 4.06 4.85 5.59 6.49 8.38 8.43 9.46 9.41 8.10 7.67 6.19 4.91 6.96 1988 4.20 4.86 5.47 7.15 7.63 8.36 11.64 10.57 7.75 7.06 5.43 4.48 7.05 1989 ****** 4.43 5.83 6.83 7.86 8.19 10.49 9.60 7.55 6.42 7.14 5.24 ****** 1990 ****** ****** ****** 6.53 8.29 9.60 11.82 11.48 7.39 7.33 6.57 5.15 ****** 1991 5.06 4.69 7.65 8.07 7.90 10.47 13.05 12.06 8.41 9.56 7.45 5.75 8.34 1992 4.11 4.10 4.70 6.52 9.68 9.45 11.89 10.80 8.16 6.57 6.11 5.61 7.31 1993 4.56 5.11 5.80 7.27 10.24 10.77 13.98 ****** 7.10 6.84 6.19 5.50 ****** 1994 5.07 4.69 5.46 7.66 8.56 9.26 11.33 13.60 8.91 9.52 7.93 4.43 8.04 1995 5.07 ****** 6.27 7.81 9.22 9.94 10.66 10.43 9.40 7.10 4.71 4.85 ****** 1996 4.47 5.42 5.71 6.88 9.06 8.87 11.21 10.09 8.78 6.78 5.56 5.11 7.33 1997 4.14 3.26 5.14 7.22 9.14 10.76 11.95 9.44 8.02 8.63 6.57 4.89 7.43 1998 4.46 5.32 7.35 8.91 10.56 12.41 12.78 13.63 11.08 8.66 7.00 7.43 9.13 1999 6.13 6.67 7.77 7.03 7.82 7.79 11.27 11.38 8.20 7.24 7.67 5.37 7.86 2000 4.36 5.17 5.53 7.54 8.48 10.45 12.14 11.72 10.19 9.64 6.75 5.27 8.10 MEAN 4.65 5.00 5.94 6.97 7.92 8.31 9.48 9.41 7.94 7.09 6.23 5.13 7.01 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 29 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 2.81 2.28 5.69 7.77 18.89 25.64 32.24 26.83 24.41 13.43 6.19 5.04 14.27 1962 3.92 5.99 11.05 10.11 20.20 29.31 31.90 29.45 23.44 14.83 6.64 4.20 15.92 1963 5.07 6.82 7.42 12.53 15.05 33.13 33.93 34.46 26.54 11.63 4.51 3.46 16.21 1964 1.55 6.67 9.75 11.38 23.99 31.49 35.17 30.23 21.25 12.05 4.83 1.50 15.82 1965 1.44 4.20 6.20 10.25 23.37 34.34 36.56 30.98 20.83 9.86 6.80 5.14 15.83 1966 3.96 5.31 8.20 10.28 19.49 32.43 35.01 30.07 21.14 10.94 7.12 4.00 15.66 1967 2.30 3.96 6.23 7.57 15.40 28.11 37.99 32.68 18.54 10.46 4.49 3.32 14.25 1968 3.28 2.88 6.52 8.97 18.76 28.75 35.69 31.60 18.76 12.05 5.44 3.85 14.71 1969 2.00 4.28 9.04 10.06 19.70 32.56 36.26 27.45 19.03 15.96 4.80 4.64 15.48 1970 2.65 5.25 7.37 14.40 22.55 31.30 32.52 32.56 23.20 15.38 9.55 3.47 16.68 1971 3.27 3.59 7.67 8.33 18.68 30.89 36.40 34.19 19.03 12.18 6.38 3.62 15.35 1972 1.56 1.70 3.95 9.93 13.26 30.00 35.74 26.82 21.14 14.97 6.83 2.37 14.02 1973 2.00 4.44 6.98 13.88 21.37 33.60 40.73 32.22 19.99 8.58 4.49 2.49 15.90 1974 1.64 1.45 4.37 10.74 18.51 25.47 32.59 30.01 19.72 9.75 3.91 2.78 13.41 1975 2.28 3.55 5.46 9.80 15.31 25.50 35.06 26.67 21.22 11.93 6.23 2.73 13.81 1976 2.46 2.33 3.40 7.88 16.50 23.76 32.67 29.97 19.72 9.52 3.62 2.81 12.89 1977 2.20 6.37 9.04 10.34 16.68 29.69 38.31 26.61 21.85 11.46 5.34 3.44 15.11 1978 2.86 3.74 6.12 12.76 20.82 28.92 31.86 30.96 26.01 16.05 5.31 4.58 15.83 1979 4.13 5.33 6.81 14.21 15.01 26.37 36.58 28.03 24.11 14.77 8.34 3.82 15.63 1980 3.90 3.73 6.32 12.43 21.16 30.99 33.67 32.14 22.31 13.86 7.12 4.38 16.00 1981 3.71 4.92 9.40 13.00 19.80 25.65 31.65 30.85 22.06 12.28 9.47 6.45 15.77 1982 3.73 4.29 6.46 13.98 19.52 31.00 30.98 32.87 23.55 9.49 5.21 2.99 15.34 1983 2.87 4.17 ****** 10.81 18.52 ****** ****** 35.03 ****** 14.70 10.32 4.83 ****** 1984 4.05 4.61 7.09 13.08 14.41 28.59 30.49 33.14 23.33 13.14 6.72 3.10 15.15 1985 5.30 6.43 ****** 14.71 20.99 32.45 38.08 27.89 26.56 15.27 7.12 4.22 ****** 1986 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1987 6.24 7.00 6.93 13.61 22.30 30.38 31.45 30.48 25.26 10.26 8.59 5.02 16.46 1988 3.93 4.46 8.48 12.15 21.53 29.22 33.02 29.89 24.95 15.51 9.29 6.16 16.55 1989 ****** 4.10 6.98 12.08 19.75 32.41 34.80 30.83 24.70 16.33 6.03 4.71 ****** 1990 ****** ****** ****** 12.88 22.14 31.25 31.58 33.00 27.27 14.65 9.30 5.51 ****** 1991 3.63 4.58 5.16 12.68 19.54 27.43 31.77 29.55 24.51 10.40 6.67 3.32 14.94 1992 2.27 4.19 5.73 10.70 13.02 25.37 31.96 26.46 20.49 14.07 8.53 3.99 13.90 1993 2.71 4.37 5.83 11.42 14.43 27.01 28.33 ****** 23.21 12.86 7.33 5.22 ****** 1994 4.45 5.05 8.46 13.13 17.84 29.11 35.67 31.51 18.07 10.02 6.11 4.63 15.34 1995 5.59 ****** 7.63 10.82 16.08 24.87 37.71 32.91 23.40 14.06 10.80 2.85 ****** 1996 2.10 5.67 6.15 12.00 19.10 29.75 28.31 30.83 26.97 15.41 8.19 6.14 15.89 1997 5.61 7.10 6.45 10.90 16.76 26.32 38.56 35.09 25.25 15.63 6.39 4.38 16.54 1998 3.88 5.03 6.37 12.04 16.92 25.83 31.57 29.28 24.25 14.68 10.18 6.06 15.51 1999 3.03 5.44 5.48 13.33 23.41 34.98 33.13 31.08 27.90 18.25 4.96 3.88 17.07 2000 5.07 5.03 8.23 18.29 25.80 28.36 33.30 30.48 26.55 13.38 6.91 3.82 17.10 MEAN 3.34 4.60 6.90 11.67 18.89 29.27 34.03 30.66 22.91 13.08 6.82 4.07 15.52 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 30 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 64 74 59 57 35 30 25 28 31 41 55 47 46 1962 52 51 39 48 28 20 21 21 26 36 50 58 38 1963 56 50 48 38 38 21 20 20 26 41 60 47 39 1964 59 51 43 41 27 22 26 27 31 44 62 70 42 1965 75 66 57 45 29 18 19 21 30 47 55 60 44 1966 66 60 49 45 32 19 22 23 30 48 55 66 43 1967 73 61 52 54 37 22 18 23 32 45 63 57 45 1968 55 69 52 47 28 21 18 22 34 41 60 64 43 1969 67 57 48 48 32 19 19 31 33 34 58 57 42 1970 68 55 49 35 25 22 25 25 28 32 38 63 39 1971 65 65 48 51 36 21 18 19 34 35 57 63 43 1972 77 74 66 48 42 22 20 26 30 33 53 70 47 1973 73 61 52 35 26 18 13 21 29 48 65 73 43 1974 74 75 64 42 29 24 25 26 33 43 63 65 47 1975 70 59 54 44 43 31 25 26 30 41 56 67 46 1976 68 71 66 52 33 27 25 26 33 45 67 69 49 1977 66 48 46 49 37 25 18 24 27 45 59 70 43 1978 66 66 53 37 27 23 22 23 25 34 59 60 41 1979 59 54 48 34 43 29 21 25 28 37 45 61 40 1980 59 61 53 42 27 22 21 24 30 40 52 58 41 1981 60 54 42 37 30 27 24 25 30 41 43 46 38 1982 59 51 48 38 35 24 23 24 29 55 61 66 43 1983 66 59 *** 44 39 *** *** 25 *** 33 39 58 *** 1984 59 57 55 39 41 30 29 28 30 38 56 65 44 1985 55 45 *** 35 29 24 20 28 27 36 56 59 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 45 46 50 38 31 24 26 26 28 49 48 54 39 1988 55 57 43 41 30 25 29 29 28 36 42 47 39 1989 *** 56 49 41 34 23 26 27 27 32 58 56 *** 1990 *** *** *** 39 31 26 30 28 24 38 47 55 *** 1991 62 55 63 43 32 30 32 31 30 54 58 67 46 1992 67 54 50 44 48 31 30 33 33 37 47 62 45 1993 69 58 55 45 47 32 36 *** 26 39 50 54 *** 1994 56 52 46 42 38 28 27 33 37 53 61 53 44 1995 54 *** 49 47 40 34 25 27 33 41 37 66 *** 1996 72 55 54 43 38 27 31 28 28 36 47 52 43 1997 49 39 51 46 42 33 27 25 29 43 58 61 42 1998 61 56 59 48 43 35 32 36 37 46 48 61 47 1999 71 60 65 41 30 21 30 33 28 35 68 65 46 2000 53 56 46 35 29 31 30 32 33 49 56 62 43 MEAN 63 58 52 43 34 25 24 26 30 41 54 60 43 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 31 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 77 83 79 78 63 55 42 42 52 67 77 62 65 1962 67 75 64 69 44 33 31 31 42 58 71 75 55 1963 79 76 68 57 52 31 30 32 42 63 77 66 56 1964 78 68 55 59 40 29 35 36 52 76 85 84 58 1965 86 82 77 60 46 25 30 34 49 67 77 82 60 1966 81 78 70 58 47 29 31 35 49 68 81 86 59 1967 82 75 82 70 50 33 28 32 50 62 87 71 60 1968 70 89 76 63 45 32 27 32 50 56 79 76 58 1969 79 71 68 66 47 32 32 44 48 50 76 75 57 1970 84 75 72 52 39 31 36 37 41 42 56 81 54 1971 82 83 71 71 54 34 31 28 48 47 75 77 58 1972 87 87 80 67 59 34 29 38 50 47 71 82 61 1973 84 77 70 51 42 29 21 30 39 67 88 84 57 1974 86 84 81 56 42 37 43 43 51 60 82 80 62 1975 81 68 69 61 56 48 42 38 50 64 77 79 61 1976 76 81 82 69 44 39 43 43 51 62 83 82 63 1977 76 69 64 69 54 41 28 38 38 64 76 83 58 1978 80 82 69 55 44 38 35 36 39 49 78 76 57 1979 78 77 69 52 59 42 33 38 43 56 68 79 58 1980 81 78 73 58 39 33 33 35 43 54 71 77 56 1981 81 74 65 55 47 42 36 39 42 60 65 66 56 1982 75 72 70 58 52 37 33 36 42 71 81 86 59 1983 84 81 *** 64 58 *** *** 38 *** 48 59 78 *** 1984 78 78 74 54 56 43 39 37 40 52 74 81 59 1985 73 68 *** 54 42 34 28 39 38 50 72 76 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 63 65 68 57 45 35 38 37 41 65 68 72 55 1988 70 74 58 58 44 37 41 41 42 52 61 64 54 1989 *** 71 66 58 50 34 37 38 38 45 73 69 *** 1990 *** *** *** 56 44 35 40 38 34 51 58 68 *** 1991 76 71 78 60 43 41 42 41 41 70 73 82 60 1992 79 71 71 63 68 45 39 46 46 49 62 78 60 1993 84 72 71 63 66 44 46 *** 37 52 61 66 *** 1994 68 64 66 59 56 41 39 43 47 68 73 65 57 1995 73 *** 63 68 57 50 36 38 45 57 57 76 *** 1996 82 76 76 66 57 43 45 38 39 52 64 72 59 1997 68 63 76 68 63 49 39 39 45 61 87 86 62 1998 83 75 77 64 59 46 46 50 52 63 64 77 63 1999 87 78 84 65 46 33 45 59 43 54 88 82 64 2000 74 75 69 55 45 45 45 48 49 67 72 78 60 MEAN 78 75 71 61 50 38 36 39 44 58 73 76 58 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 32 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 MET. AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1961 49 65 40 42 15 14 14 18 18 24 36 34 31 1962 37 31 23 31 16 12 15 15 17 22 34 42 25 1963 37 33 32 24 26 13 13 13 16 27 47 26 26 1964 36 37 31 27 17 16 19 21 19 26 46 52 29 1965 62 48 39 32 18 14 12 13 17 32 37 40 30 1966 52 46 33 34 21 12 14 16 19 34 36 49 31 1967 64 48 30 41 26 14 12 17 19 29 45 42 32 1968 40 47 35 33 15 12 12 15 21 29 45 53 30 1969 54 42 32 32 20 11 11 23 21 21 38 39 29 1970 53 39 34 22 16 14 18 17 19 21 24 46 27 1971 48 47 30 34 22 12 10 14 24 26 39 49 30 1972 66 61 54 35 28 14 13 18 16 20 35 57 35 1973 59 48 36 23 16 10 7 14 21 35 47 61 31 1974 58 65 48 29 18 15 14 16 21 29 41 52 34 1975 58 49 41 31 32 19 14 18 16 25 39 54 33 1976 60 63 52 39 22 17 13 16 21 31 50 58 37 1977 59 29 30 33 24 12 10 13 20 31 44 57 30 1978 54 51 38 23 16 12 14 14 16 21 39 43 28 1979 41 32 31 22 32 19 14 16 18 23 26 44 27 1980 41 45 37 28 18 14 14 17 21 30 40 44 29 1981 46 39 26 24 19 17 16 17 19 29 28 33 26 1982 47 37 34 26 24 15 17 17 21 40 43 49 31 1983 52 37 *** 30 26 *** *** 17 *** 23 28 43 *** 1984 41 40 39 25 29 21 20 21 22 25 41 49 31 1985 36 27 *** 23 20 17 15 20 20 26 44 45 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 29 33 38 26 21 17 18 19 19 37 35 42 28 1988 45 46 33 30 20 18 22 20 19 25 31 36 29 1989 *** 46 38 29 23 16 18 19 18 23 44 42 *** 1990 *** *** *** 26 21 18 21 19 17 26 32 40 *** 1991 45 40 49 30 23 22 24 22 20 37 40 48 33 1992 54 39 34 29 34 20 20 22 21 21 30 45 31 1993 50 42 40 30 33 22 27 *** 19 25 38 40 *** 1994 44 40 31 29 24 19 18 24 25 38 47 37 31 1995 34 *** 37 33 26 22 16 17 22 25 20 55 *** 1996 61 37 38 27 25 16 21 17 18 21 28 31 28 1997 31 20 32 30 26 21 16 14 17 25 37 35 25 1998 37 37 35 25 26 21 22 23 22 26 26 42 29 1999 53 43 50 24 17 13 19 16 15 18 44 42 30 2000 32 36 30 21 17 20 20 19 18 28 39 45 27 MEAN 48 42 36 29 22 16 16 18 19 27 38 45 30 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 33 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 2 2 2 5 0 0 0 0 0 0 2 1 14 1962 2 0 1 4 1 0 0 0 0 0 1 3 12 1963 0 1 3 0 1 0 0 0 0 0 1 2 8 1964 0 0 4 1 0 0 0 0 0 0 0 3 8 1965 6 1 1 0 0 0 0 0 0 0 0 0 8 1966 3 1 2 0 0 0 0 0 0 3 0 1 10 1967 1 2 0 2 1 0 0 0 0 0 3 0 9 1968 1 1 3 4 1 0 1 0 0 0 2 2 15 1969 8 0 2 5 1 0 0 0 0 0 0 0 16 1970 3 2 1 3 0 0 0 0 0 0 0 3 12 1971 1 3 1 4 0 0 0 0 0 0 1 0 10 1972 2 2 6 4 3 0 0 0 0 0 1 1 19 1973 0 1 2 1 0 0 0 0 0 0 0 0 4 1974 5 3 2 0 0 0 0 0 0 0 0 4 14 1975 2 0 3 3 2 0 0 0 0 0 0 2 12 1976 2 2 4 3 2 0 0 0 0 2 1 1 17 1977 1 0 0 5 1 0 0 0 0 0 2 3 12 1978 1 2 1 0 0 0 0 0 0 0 2 3 9 1979 3 0 1 0 3 0 0 0 0 0 0 3 10 1980 1 4 2 2 0 0 0 0 0 0 0 1 10 1981 1 2 2 1 0 0 0 0 0 0 0 1 7 1982 2 0 2 0 2 0 0 0 0 2 2 2 12 1983 4 0 *** 1 0 *** *** 0 *** 0 0 1 *** 1984 1 1 4 1 3 0 0 0 0 0 1 1 12 1985 0 1 *** 0 0 0 0 0 0 0 1 2 *** 1986 *** *** *** *** *** *** *** *** *** *** *** *** *** 1987 1 1 3 1 0 0 1 0 0 2 0 2 11 1988 0 2 2 1 0 0 0 0 0 0 0 0 5 1989 *** 1 3 0 0 0 0 0 0 0 4 2 *** 1990 *** *** *** 1 0 0 0 0 0 0 0 1 *** 1991 2 1 3 0 0 0 0 0 0 1 1 6 14 1992 3 1 1 1 2 1 0 0 0 0 0 0 9 1993 2 3 3 1 2 0 0 *** 0 0 2 0 *** 1994 1 2 3 0 1 0 0 0 0 1 3 1 12 1995 0 0 2 3 2 2 0 0 0 1 0 3 13 1996 4 6 7 1 1 0 0 0 0 0 0 1 20 1997 0 0 4 3 0 1 0 0 0 0 2 3 13 1998 1 2 3 0 2 0 0 0 0 1 0 0 9 1999 1 1 5 0 0 0 0 0 0 0 0 1 8 2000 2 0 1 0 0 0 0 0 0 2 0 3 8 MEAN 2 1 2 2 1 0 0 0 0 0 1 2 11 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 34 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 10.8 12.0 13.4 19.0 24.0 27.0 28.8 27.6 22.2 17.0 13.4 9.0 1 YEAR - DAY 1994- 3 1998- 8 1966-21 1966-21 2000-19 1966-18 1973-20 1994-13 2000- 1 1982- 4 1993-11 1994-20 LOW. DRY 03 -18.0 -16.4 -9.8 -4.2 3.8 6.8 14.4 12.6 4.6 -3.0 -8.0 -14.0 2 YEAR - DAY 1969- 9 1972- 3 1976- 4 1965- 9 1963- 3 1961- 3 1963-24 1982-29 1962-30 1984-23 1964-29 1963-29 HIG. WET 03 7.0 9.8 9.6 13.6 17.2 17.0 19.8 22.4 14.2 11.6 9.4 7.0 3 YEAR - DAY 1994- 3 1998- 8 1964-16 1965-20 1971-29 1966-18 1994-14 1999-31 2000- 7 1982- 4 1994- 2 1991-13 LOW. WET 03 -18.8 -16.8 -10.2 -6.0 1.4 3.4 7.4 6.0 2.4 -4.0 -9.2 -16.0 4 YEAR - DAY 1964-20 1972- 3 1976- 4 1965-10 1984- 2 1961- 3 1962-27 1982-29 1994-22 1984-23 1964-29 1963-29 HIG. DRY 09 20.4 21.0 25.0 30.4 35.8 39.2 42.0 39.8 37.6 33.8 25.4 22.4 5 YEAR - DAY 1994- 1 1984-13 1962-23 1998-16 2000-31 1999-30 1997-24 1998-18 1996-11 1998- 2 1988- 8 1998-19 LOW. DRY 09 -6.4 -4.2 2.2 3.0 13.0 21.8 26.0 19.4 12.4 10.6 0.6 -8.8 6 YEAR - DAY 1964-21 1972- 1 1998- 1 1967- 1 1992- 6 1995- 1 1987-28 1969-27 1969-13 1974-31 1982-30 1963-27 HIG. WET 09 12.8 13.2 17.6 18.8 21.8 21.0 23.6 25.8 25.0 19.4 15.4 13.8 7 YEAR - DAY 1994- 1 1999-28 1964-27 1980-14 1967-15 1989-30 1997-24 1970-23 1969- 9 1966-26 1991- 3 1998- 9 LOW. WET 09 -8.0 -4.8 -0.6 1.0 7.4 11.4 13.0 12.2 7.6 4.8 0.0 -11.4 8 YEAR - DAY 1964-20 1972- 1 1998- 1 1967- 1 1981- 1 1962-10 1961- 4 1977- 4 1969-13 1974-29 1982-30 1963-27 HIG. DRY 15 15.0 16.6 21.2 30.8 33.0 36.6 40.0 36.8 33.0 29.4 18.8 14.2 9 YEAR - DAY 1963-31 1963-23 1962-27 2000-17 2000-29 1985-30 1989- 2 1982- 5 1963- 8 1998- 7 1970- 2 1977- 5 LOW. DRY 15 -14.0 -10.8 -2.0 2.0 7.4 14.4 19.0 19.8 14.6 6.2 -0.6 -10.0 10 YEAR - DAY 1969- 8 1972- 3 1979- 4 1967- 1 1997- 5 1995- 1 1988-27 1969-27 1981-23 1976-30 1982-30 1963-29 HIG. WET 15 10.0 11.0 14.8 20.0 19.8 23.0 24.0 27.6 20.4 16.0 12.6 9.6 11 YEAR - DAY 1970- 3 1999-10 1964-27 1998-15 1995-26 1998- 8 1964-11 2000-11 1998- 5 1993-10 1991- 4 1991-12 LOW. WET 15 -14.6 -11.0 -4.0 0.0 6.0 10.0 10.0 11.6 8.4 2.8 -3.0 -13.0 12 YEAR - DAY 1969- 8 1972- 3 1979- 4 1972-30 1981- 1 1971- 5 1988-27 1997-28 1969-13 1993- 8 1995-30 1963-29 HIG. MIN. 7.5 11.2 11.0 16.2 24.0 22.8 26.2 27.0 21.4 15.0 10.0 7.4 13 YEAR - DAY 1994- 3 1998- 8 1995-31 2000-22 2000-19 2000-29 1998-13 1994-13 2000- 1 1980- 3 1994- 2 1998-26 LOW. MIN. -18.5 -17.0 -10.5 -6.0 1.0 6.5 12.0 9.0 3.0 -3.0 -9.0 -16.0 14 YEAR - DAY 1964-20 1974- 5 1976- 4 1965-10 1994- 6 1961- 3 1978-10 1999-29 1962-29 1984-23 1964-29 1972-26 HIG. MAX. 21.0 22.0 28.0 34.0 38.0 41.0 42.5 41.0 38.5 34.0 26.0 22.5 15 YEAR - DAY 1994- 1 1962-18 1962-23 1992-17 2000-31 1999-28 1998-11 1994- 6 1999- 2 1998- 1 1983- 1 1998-19 LOW. MAX. -5.5 -3.5 4.5 3.0 14.0 23.0 28.5 27.0 21.0 11.5 5.0 -7.0 16 YEAR - DAY 1964-21 1972- 1 1975- 8 1967- 1 1979- 8 1961- 3 1987-27 1992-31 1967-28 1974-30 1987-29 1963-27 HIG. PPTN 29.5 49.0 27.0 42.5 31.0 10.0 7.0 1.0 3.0 39.0 44.0 52.5 17 YEAR - DAY 1961-21 1966- 9 1987-30 1962-21 1992- 6 1995- 2 1987-27 1998- 8 1972-10 1976-30 1993-12 1989- 4 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 35 STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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 21.0 22.0 25.4 22.0 20.4 21.2 20.2 21.4 21.6 22.6 23.2 23.8 18 YEAR - DAY 2000-25 1999-25 1968-26 1997-12 2000-12 1961- 1 1963- 3 1999-29 1998-23 1983-11 1983- 4 1998-19 DRY 15 - DRY 09 14.4 12.0 11.2 21.1 15.2 9.8 12.0 14.6 19.0 14.2 12.2 11.8 19 YEAR - DAY 1999- 5 2000-17 1971-23 1972-30 2000-21 1964-11 2000- 3 1998-20 1988- 7 1996-24 1994-13 1964-28 DRY 15 - DRY 03 20.2 18.2 20.0 17.8 16.8 19.0 17.4 18.0 18.2 18.8 16.0 15.4 20 YEAR - DAY 1970- 3 1964- 9 1968-26 1967- 4 1994-21 1961- 1 1994-22 1963-20 1963-23 1999-21 1988-16 1998-18 WET 09 - WET 03 19.6 17.4 18.8 15.2 14.8 11.8 10.6 15.6 15.8 14.4 16.0 18.8 21 YEAR - DAY 1972-25 1999-25 1968-26 1965-10 1967-15 1998-30 1966-27 1970-23 1969- 9 1983-11 1982-18 1964-28 WET 15 - WET 09 10.2 9.2 10.2 13.8 9.8 6.0 8.0 9.6 10.4 9.2 7.6 10.8 22 YEAR - DAY 1972-25 1974- 5 1970-23 1972-30 1998-13 1966-20 1988-27 2000-11 1969- 9 1966-26 1985- 5 1964-28 WET 15 - WET 03 17.6 14.8 15.2 13.8 11.6 12.4 12.0 12.0 12.8 15.0 12.4 15.2 23 YEAR - DAY 1965- 4 1964- 9 1968-26 1970- 1 1998-10 1998-30 1964-11 1961-24 1999-25 1993-10 1962-28 1967-30 DAY BY DAY DRY 03 14.4 11.8 12.8 10.2 9.0 12.2 7.8 7.6 7.0 9.2 10.9 9.8 24 YEAR - DAY 1964-20 1987-13 1971-16 1965-11 1991-18 1978- 1 1999-17 1969-31 1969-11 1984-21 1992-27 1992-29 DAY BY DAY WET 03 14.0 10.1 10.2 10.2 8.0 7.0 8.0 8.2 11.0 6.6 9.4 9.8 25 YEAR - DAY 1964-20 1998-18 1971-16 1969-14 1991-23 1966-27 1994-14 1999-21 1999- 1 1984-20 1981-23 1987-25 DAY BY DAY DRY 09 14.8 13.8 14.6 14.2 10.8 11.2 6.8 9.2 13.0 11.0 11.6 10.8 26 YEAR - DAY 1964-20 1988- 3 1988-23 1999-22 1997-24 2000-19 1988-27 1969-27 1981-23 1998-10 1993-12 1997- 2 DAY BY DAY WET 09 13.4 7.2 7.2 8.6 8.0 4.6 4.0 8.4 10.4 8.0 8.2 11.0 27 YEAR - DAY 1964-20 1985-27 1973- 6 1994- 2 1967-17 1966-18 1964- 5 1970-23 1969- 9 1966-27 1993-14 1963-26 DAY BY DAY DRY 15 13.4 10.6 10.4 15.1 13.5 11.4 11.4 11.0 13.0 12.8 9.4 8.4 28 YEAR - DAY 1964-20 1974-26 1988-23 1972-30 1972- 1 2000-19 1988-27 1990-13 1988- 7 1998- 9 1999- 1 1981-31 DAY BY DAY WET 15 11.4 11.2 8.4 10.2 12.0 6.6 7.4 10.6 6.8 7.6 9.9 9.8 29 YEAR - DAY 1970- 3 1974-26 1975- 8 1972-30 1972- 1 2000-13 1964-11 2000-12 1999-26 1993-10 1999-11 1963-26 DAY BY DAY MIN. 14.5 10.0 10.0 11.0 9.4 9.1 9.5 7.0 7.5 8.4 12.0 9.5 30 YEAR - DAY 1964-20 1973- 7 1971-16 1965-11 1997- 6 1994-26 1972- 8 1969-24 1981-24 1999- 7 1992-27 1963-31 DAY BY DAY MAX. 15.5 9.5 11.5 15.5 8.5 8.0 7.5 4.5 10.8 12.5 9.5 12.5 31 YEAR - DAY 1964-20 1964- 1 1971-15 1992-18 1967- 9 1961- 1 1988-27 1982- 1 1969-11 1961-24 1989- 1 1978- 3 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 1.7 3.5 8.5 11.4 19.4 22.8 26.0 23.6 22.2 14.4 7.8 3.8 13.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.7 -3.3 1.8 5.4 11.2 14.0 16.9 14.4 12.3 5.5 0.4 -3.4 5.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.1 10.4 15.2 17.5 27.5 31.6 35.1 32.8 32.0 23.3 15.0 11.1 21.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.8 13.7 13.4 12.1 16.3 17.6 18.2 18.4 19.7 17.8 14.6 14.5 15.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.52 2.97 4.44 5.33 6.65 7.26 6.61 5.63 6.52 4.94 3.95 1.85 4.89 MEAN OF MIXING RATIO AT 09 GMT. 3.93 5.53 4.99 5.71 4.54 4.91 5.48 6.12 5.64 4.81 4.32 3.65 4.97 MEAN OF MIXING RATIO AT 15 GMT. 4.02 5.25 5.55 5.42 4.73 5.52 7.30 7.70 6.77 4.47 4.68 4.16 5.46 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.0 -12.5 -7.0 -0.5 6.0 6.5 14.0 12.5 8.5 -0.5 -5.5 -5.0 -12.5 DAY 10 3 5 4 31 3 29 19 30 29 27 18 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 15.5 20.5 27.0 32.0 36.0 39.0 38.0 37.0 31.0 21.5 13.0 39.0 DAY 19 26 31 29 25 21 11 11 14 1 5 4 24 HOUR MAXIMUM PRECIPITATION IN MM. 29.5 7.0 16.0 19.0 4.0 0.0 2.0 0.0 0.0 0.0 9.0 10.0 29.5 DAY 21 2 13 8 30 ** 18 ** ** ** 23 14 MONTHLY TOTAL PRECIPITATION IN MM. 44.0 21.0 32.0 58.0 4.0 0.0 2.0 0.0 0.0 0.0 24.0 10.0 195.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 49.7 31.8 1.0 17.4 NO. OF DAYS WITH PRECIPITATION. 6 4 3 9 1 0 1 0 0 0 5 1 30 NO. OF DAYS PRECIPITATION EQUAL 6 4 3 9 1 0 1 0 0 0 5 1 30 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 2 1 0 0 0 0 0 0 0 1 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 70 77 79 77 63 55 42 42 52 67 76 48 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 68 42 45 18 15 15 18 18 24 37 38 33 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 66 78 57 51 23 19 20 24 24 30 50 55 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 19 14 1 0 0 0 0 0 0 0 5 13 52 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 4 0 0 0 0 0 4 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 8 25 31 30 27 2 0 0 123 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. 27 23 8 1 0 0 0 0 0 3 8 31 101 DATE OF START AND END FREEZING START = 29 OCT. END = 4 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 2.0 6.9 11.5 12.6 19.0 23.7 25.4 24.1 20.2 15.8 7.3 4.3 14.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.4 -0.7 2.9 4.2 10.4 14.8 16.6 15.2 10.3 6.9 -0.7 -2.9 6.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.4 14.6 20.1 21.0 27.5 32.5 34.2 32.9 30.1 24.8 15.3 11.5 22.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.8 15.3 17.2 16.8 17.1 17.7 17.6 17.7 19.8 17.9 15.9 14.4 16.7 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.69 3.59 3.95 4.65 4.98 4.62 5.09 4.54 4.40 4.73 3.42 3.04 4.06 MEAN OF MIXING RATIO AT 09 GMT. 3.66 3.40 3.60 4.98 4.03 4.24 5.80 5.12 4.87 4.60 4.19 3.84 4.36 MEAN OF MIXING RATIO AT 15 GMT. 4.04 4.02 3.97 5.47 4.48 4.89 5.54 5.59 5.25 4.96 4.25 4.18 4.72 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.5 -5.0 -3.0 1.0 5.0 9.0 14.0 11.5 3.0 4.0 -8.5 -8.5 -9.5 DAY 2 10 12 19 1 11 27 10 29 12 28 2 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 22.0 28.0 24.5 32.5 35.0 37.0 36.0 33.5 30.0 21.5 17.0 37.0 DAY 31 18 23 3 25 15 3 24 5 3 1 23 24 HOUR MAXIMUM PRECIPITATION IN MM. 8.0 3.0 9.0 42.5 8.0 0.0 0.0 0.0 0.0 0.0 10.0 13.0 42.5 DAY 9 3 1 21 3 ** ** ** ** ** 8 10 MONTHLY TOTAL PRECIPITATION IN MM. 21.0 11.0 12.0 73.5 10.0 0.0 0.0 0.0 0.0 0.0 10.0 35.0 172.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 25.5 48.4 0.0 26.1 NO. OF DAYS WITH PRECIPITATION. 4 5 2 8 2 0 0 0 0 0 1 3 25 NO. OF DAYS PRECIPITATION EQUAL 4 5 2 8 2 0 0 0 0 0 1 3 25 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 2 0 0 0 0 0 0 1 3 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 46 75 64 69 44 32 31 31 42 58 70 74 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 46 31 24 31 17 13 16 15 17 22 35 43 26 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 63 48 30 43 22 16 17 18 20 29 45 58 34 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 21 5 0 0 0 0 0 0 0 0 10 11 47 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 13 26 31 29 20 1 0 0 120 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. 29 17 7 0 0 0 0 0 0 0 16 26 95 DATE OF START AND END FREEZING START = 12 NOV. END = 17 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 5.6 7.4 8.7 13.9 17.2 25.1 25.3 25.4 21.5 12.9 5.9 0.2 14.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.9 0.4 0.9 5.8 8.9 14.6 15.0 14.8 11.2 5.2 0.2 -7.0 5.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.0 14.4 16.4 22.0 25.5 35.6 35.6 35.8 31.9 20.7 11.6 7.3 22.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.9 14.0 15.5 16.2 16.6 21.0 20.6 21.0 20.7 15.5 11.4 14.3 16.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.39 3.91 3.67 4.30 4.87 4.55 4.63 4.77 4.53 4.45 3.84 0.93 3.99 MEAN OF MIXING RATIO AT 09 GMT. 3.71 4.08 4.17 4.54 5.48 5.12 5.25 5.19 5.49 4.60 4.50 3.83 4.66 MEAN OF MIXING RATIO AT 15 GMT. 3.98 3.62 4.50 4.84 5.64 6.26 5.72 5.31 5.64 4.75 4.70 3.52 4.87 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.0 -6.5 -7.0 3.5 3.0 10.0 12.5 12.5 5.5 4.5 -4.5 -15.5 -15.5 DAY 8 7 9 16 4 1 24 2 30 9 30 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 19.0 21.0 20.0 26.5 32.0 37.0 37.5 37.5 35.5 27.5 17.5 15.0 37.5 DAY 31 25 15 21 31 15 9 19 1 2 1 16 24 HOUR MAXIMUM PRECIPITATION IN MM. 0.0 7.0 26.0 3.0 15.0 0.0 0.0 0.0 0.0 0.0 5.0 11.5 26.0 DAY ** 12 27 24 13 ** ** ** ** ** 11 31 MONTHLY TOTAL PRECIPITATION IN MM. 0.0 9.0 56.0 5.0 24.0 0.0 0.0 0.0 0.0 0.0 9.0 27.5 130.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 49.8 22.2 0.0 28.0 NO. OF DAYS WITH PRECIPITATION. 0 2 4 2 6 0 0 0 0 0 3 5 22 NO. OF DAYS PRECIPITATION EQUAL 0 2 4 2 6 0 0 0 0 0 3 5 22 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 3 0 1 0 0 0 0 0 0 1 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 78 76 68 57 50 31 30 32 42 63 76 31 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 37 37 33 25 26 13 13 13 17 27 47 49 28 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 51 37 43 31 36 18 17 15 19 32 59 60 35 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 9 4 4 0 0 0 0 0 0 0 2 31 50 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 4 4 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 9 30 31 30 23 0 0 0 123 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. 23 16 12 0 0 0 0 0 0 0 14 31 96 DATE OF START AND END FREEZING START = 17 NOV. END = 18 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. -6.0 8.7 14.0 14.1 22.3 25.5 28.4 26.0 20.3 13.0 5.7 -3.2 14.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -12.7 2.1 8.8 6.8 13.5 16.8 19.3 17.2 12.1 3.8 -1.1 -10.6 6.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 0.7 15.3 19.2 21.4 31.1 34.1 37.5 34.7 28.5 22.2 12.6 4.3 21.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.4 13.2 10.4 14.6 17.6 17.3 18.2 17.5 16.4 18.4 13.7 14.9 15.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 0.80 4.10 5.04 4.87 5.22 5.42 7.40 6.24 6.16 4.65 3.80 1.23 4.58 MEAN OF MIXING RATIO AT 09 GMT. 3.60 4.48 5.00 4.71 5.53 6.03 8.76 9.04 5.36 5.05 4.75 4.67 5.58 MEAN OF MIXING RATIO AT 15 GMT. 2.28 4.60 4.96 4.52 5.41 5.95 9.10 8.37 5.37 4.83 4.87 3.44 5.31 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -18.5 -8.0 5.0 2.0 6.0 13.5 13.0 14.0 9.0 0.5 -9.0 -15.5 -18.5 DAY 20 1 2 11 1 22 1 30 29 29 29 19 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 10.5 18.5 24.5 26.5 33.5 35.0 40.0 39.0 32.0 26.0 18.5 8.5 40.0 DAY 19 29 31 28 23 13 2 18 2 1 1 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 3.0 3.0 9.0 8.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 33.0 33.0 DAY 26 3 16 16 ** ** ** ** ** ** 25 13 MONTHLY TOTAL PRECIPITATION IN MM. 8.0 5.0 29.0 8.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0 62.5 117.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 35.7 6.8 0.0 57.4 NO. OF DAYS WITH PRECIPITATION. 4 2 4 1 0 0 0 0 0 0 2 3 16 NO. OF DAYS PRECIPITATION EQUAL 4 2 4 1 0 0 0 0 0 0 2 3 16 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 0 0 0 0 0 0 0 2 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 38 67 54 59 40 29 35 35 52 76 83 52 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 75 37 32 27 17 16 20 23 19 26 46 77 35 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 63 48 42 37 22 19 23 24 22 31 56 80 39 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 5 0 0 0 0 0 0 0 0 4 31 71 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 4 1 0 0 0 0 5 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 11 0 0 0 0 0 0 0 0 0 0 2 13 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 25 30 31 30 11 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. 31 8 0 0 0 0 0 0 0 0 16 31 86 DATE OF START AND END FREEZING START = 15 NOV. END = 10 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. -2.1 7.5 9.5 13.3 22.2 26.6 27.3 24.5 18.5 12.6 10.0 7.4 14.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -9.3 1.4 2.7 6.0 12.9 17.7 17.3 14.8 7.3 5.1 3.1 -0.1 6.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.1 13.6 16.4 20.5 31.4 35.5 37.3 34.1 29.8 20.1 16.9 15.0 23.0 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.4 12.2 13.7 14.5 18.5 17.8 20.0 19.3 22.5 15.0 13.8 15.1 16.4 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.86 4.41 4.69 4.74 5.88 4.90 5.64 5.36 5.34 4.86 4.69 4.19 4.71 MEAN OF MIXING RATIO AT 09 GMT. 4.85 5.14 5.05 5.43 5.47 5.24 5.20 4.75 4.64 5.26 4.99 4.74 5.06 MEAN OF MIXING RATIO AT 15 GMT. 4.42 4.91 5.10 5.07 5.71 5.32 5.56 5.47 4.98 5.54 4.98 4.78 5.15 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -16.0 -5.0 -5.0 -6.0 6.5 15.0 15.5 10.0 5.5 1.0 0.0 -7.5 -16.0 DAY 4 4 16 10 1 8 12 19 23 19 11 21 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 10.0 16.5 20.0 27.0 34.5 37.5 39.0 37.0 35.0 25.0 21.5 22.0 39.0 DAY 27 13 7 21 24 29 30 26 1 6 2 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 26.0 10.0 6.0 3.0 4.0 0.0 0.0 0.0 0.0 3.0 4.0 2.0 26.0 DAY 1 2 22 20 3 ** ** ** ** 3 9 8 MONTHLY TOTAL PRECIPITATION IN MM. 76.0 10.0 6.0 5.0 4.0 0.0 0.0 0.0 0.0 8.0 4.0 6.0 119.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 77.3 7.6 0.0 15.1 NO. OF DAYS WITH PRECIPITATION. 8 1 1 2 1 0 0 0 0 3 1 3 20 NO. OF DAYS PRECIPITATION EQUAL 8 1 1 2 1 0 0 0 0 3 1 3 20 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 3 1 0 0 0 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 66 82 77 59 46 25 30 34 49 67 77 82 58 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 76 48 39 32 18 14 12 13 17 32 37 40 32 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 84 67 55 43 24 16 15 17 22 41 50 59 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 27 4 3 4 0 0 0 0 0 0 0 4 42 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 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 0 24 30 31 31 16 0 0 0 132 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. 28 9 5 5 0 0 0 0 0 0 1 16 64 DATE OF START AND END FREEZING START = 11 NOV. END = 10 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 8.1 7.5 10.7 14.0 19.4 25.1 26.8 24.5 17.9 15.1 9.7 4.8 15.3 AVERAGE OF MINIMUM TEMPERATURE IN C. 3.5 0.9 3.6 7.8 11.5 16.3 16.9 15.4 7.3 7.9 2.3 -3.2 7.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.8 14.1 17.9 20.1 27.3 33.9 36.7 33.7 28.5 22.2 17.2 12.7 23.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 9.3 13.2 14.3 12.3 15.8 17.6 19.8 18.3 21.2 14.3 14.9 15.9 15.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 4.96 4.22 4.90 5.41 5.74 5.11 5.61 5.74 5.35 5.72 4.64 3.34 5.06 MEAN OF MIXING RATIO AT 09 GMT. 5.39 5.10 4.42 5.63 5.63 4.41 6.31 6.22 5.36 6.85 4.99 5.02 5.44 MEAN OF MIXING RATIO AT 15 GMT. 5.12 5.06 4.70 5.74 5.64 5.17 7.05 5.72 5.30 5.79 4.98 5.35 5.47 ABSOLUTE OF MINIMUM TEMPERATURE IN C. 1.0 -5.0 -3.0 3.5 4.0 12.5 14.0 10.5 5.5 5.5 -5.0 -6.5 -6.5 DAY 26 12 2 2 8 2 30 8 23 24 28 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 18.0 23.0 27.0 32.5 36.0 37.5 35.5 33.0 26.0 21.5 15.5 37.5 DAY 1 2 12 16 22 11 11 11 6 2 2 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 7.0 49.0 12.0 0.0 4.0 0.0 0.0 0.0 0.0 15.0 0.0 6.0 49.0 DAY 21 9 2 ** 6 ** ** ** ** 14 ** 20 MONTHLY TOTAL PRECIPITATION IN MM. 19.0 58.0 28.0 0.0 4.0 0.0 0.0 0.0 0.0 39.0 0.0 7.0 155.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 67.7 2.6 0.0 29.7 NO. OF DAYS WITH PRECIPITATION. 4 4 5 0 1 0 0 0 0 5 0 2 21 NO. OF DAYS PRECIPITATION EQUAL 4 4 5 0 1 0 0 0 0 5 0 2 21 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 0 0 0 0 0 0 2 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 80 76 70 56 46 27 31 34 49 68 81 86 59 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 52 47 34 37 23 13 15 17 19 37 36 50 32 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 68 55 42 41 27 16 19 18 22 39 47 64 38 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 3 0 0 0 0 0 0 0 0 3 15 21 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 9 30 31 31 11 0 0 0 112 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. 0 11 5 0 0 0 0 0 0 0 3 26 45 DATE OF START AND END FREEZING START = 28 NOV. END = 25 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 2.0 3.5 7.1 10.9 17.8 23.6 28.3 26.6 18.9 13.3 6.4 1.1 13.3 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.1 -3.9 -0.7 3.2 9.9 15.0 20.5 18.6 11.4 5.2 -0.0 -6.6 5.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.0 10.9 15.0 18.5 25.7 32.3 36.2 34.5 26.3 21.3 12.8 8.8 20.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.1 14.8 15.7 15.3 15.8 17.3 15.7 15.9 14.9 16.1 12.7 15.4 15.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.92 2.70 3.83 4.39 4.83 4.65 5.74 6.16 5.68 4.62 4.33 1.81 4.31 MEAN OF MIXING RATIO AT 09 GMT. 4.94 4.35 3.45 6.15 6.59 4.76 5.03 6.55 4.68 4.95 4.76 4.12 5.03 MEAN OF MIXING RATIO AT 15 GMT. 4.84 4.47 3.85 5.59 5.84 5.42 5.45 6.54 5.07 5.53 4.91 4.32 5.15 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.5 -9.0 -4.0 -4.5 5.5 11.0 18.0 15.0 8.0 1.5 -5.0 -12.0 -12.0 DAY 23 2 3 2 1 1 8 31 23 25 27 25 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.5 15.5 20.0 24.5 30.5 35.5 37.5 36.5 31.0 27.5 16.5 11.0 37.5 DAY 16 7 7 22 25 28 18 14 1 13 1 14 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.0 9.0 0.0 7.0 8.0 0.0 0.0 0.0 0.0 1.0 14.0 3.0 14.0 DAY 4 19 ** 1 8 ** ** ** ** 22 19 6 MONTHLY TOTAL PRECIPITATION IN MM. 12.5 23.2 0.0 13.0 10.0 0.0 0.0 0.0 0.0 1.0 33.0 3.0 95.7 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 37.3 24.0 0.0 38.7 NO. OF DAYS WITH PRECIPITATION. 4 6 0 3 2 0 0 0 0 1 6 1 23 NO. OF DAYS PRECIPITATION EQUAL 3 6 0 3 2 0 0 0 0 1 6 1 22 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 0 0 0 0 0 0 1 0 1 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 72 82 68 49 33 28 32 50 62 87 53 58 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 66 50 32 43 30 15 12 17 20 29 46 53 34 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 75 60 41 49 32 18 15 19 25 43 57 65 42 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 14 12 4 1 0 0 0 0 0 0 4 27 62 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 12 0 0 0 0 0 12 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 2 28 31 31 5 0 0 0 97 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. 31 28 21 5 0 0 0 0 0 0 12 29 126 DATE OF START AND END FREEZING START = 11 NOV. END = 9 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 0.1 2.4 8.2 13.1 19.5 24.9 27.9 26.7 20.0 15.1 9.2 5.4 14.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -8.1 -3.6 0.9 7.4 11.8 17.2 20.3 19.4 11.9 8.1 2.8 -0.8 7.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.3 8.3 15.5 18.9 27.1 32.5 35.5 34.0 28.2 22.1 15.6 11.6 21.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 16.4 11.9 14.6 11.5 15.3 15.3 15.2 14.6 16.3 14.0 12.8 12.4 14.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 1.31 3.36 4.14 5.12 5.35 5.54 5.41 6.05 5.79 5.04 4.86 3.66 4.64 MEAN OF MIXING RATIO AT 09 GMT. 4.11 4.10 4.04 4.65 3.48 4.18 4.92 5.82 5.93 5.38 5.57 5.14 4.78 MEAN OF MIXING RATIO AT 15 GMT. 4.35 4.40 4.13 5.07 4.33 4.69 5.50 5.55 6.46 5.33 5.32 4.99 5.01 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.5 -14.0 -5.0 5.0 6.0 10.5 17.5 17.0 9.0 5.0 -2.5 -3.5 -14.5 DAY 24 7 25 1 1 14 5 29 28 17 25 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.5 12.5 24.0 27.0 31.0 37.5 38.5 35.5 32.0 28.0 21.0 14.5 38.5 DAY 14 21 26 15 23 29 4 3 1 19 13 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 10.0 12.0 13.0 12.0 6.0 4.0 5.0 0.0 0.0 1.0 6.0 10.0 13.0 DAY 20 3 6 2 25 24 12 ** ** 31 1 1 MONTHLY TOTAL PRECIPITATION IN MM. 11.0 14.5 39.0 53.0 12.0 4.0 5.0 0.0 0.0 1.0 13.5 23.0 176.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 36.6 39.2 2.8 21.3 NO. OF DAYS WITH PRECIPITATION. 2 3 4 10 3 1 1 0 0 1 4 4 33 NO. OF DAYS PRECIPITATION EQUAL 2 3 4 10 3 1 1 0 0 1 3 4 32 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 3 1 0 0 0 0 0 0 0 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 43 78 75 61 45 32 27 32 49 56 78 76 54 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 53 57 35 34 15 13 12 16 23 29 47 53 32 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 69 71 46 47 24 18 16 18 31 36 56 63 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 27 8 3 0 0 0 0 0 0 0 0 0 38 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 12 8 0 0 0 0 20 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 5 28 31 31 7 0 0 0 102 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. 31 23 8 0 0 0 0 0 0 0 8 21 91 DATE OF START AND END FREEZING START = 19 NOV. END = 26 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. -0.5 4.8 12.3 14.0 20.1 25.0 27.8 25.4 19.9 17.6 6.5 5.9 14.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -6.6 -1.3 4.2 6.3 11.8 16.8 19.7 17.0 9.5 8.6 -1.7 -2.2 6.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.5 11.0 20.3 21.6 28.4 33.2 35.8 33.9 30.2 26.6 14.8 14.1 22.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.1 12.3 16.1 15.3 16.6 16.4 16.1 16.9 20.7 18.0 16.5 16.3 16.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.07 2.99 4.61 5.13 6.23 6.15 6.02 7.99 5.10 4.79 3.58 3.24 4.82 MEAN OF MIXING RATIO AT 09 GMT. 4.49 4.23 5.19 5.67 5.42 4.05 4.69 7.34 6.16 4.86 4.71 3.76 5.05 MEAN OF MIXING RATIO AT 15 GMT. 3.82 4.41 4.93 6.06 5.37 4.07 5.15 7.05 6.00 5.25 4.32 4.25 5.06 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -18.0 -9.0 0.0 -1.0 7.5 10.5 16.5 10.5 5.0 3.5 -6.5 -5.5 -18.0 DAY 9 5 19 14 11 1 11 30 14 31 19 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 13.0 19.0 27.0 26.5 32.5 35.5 37.5 36.5 33.5 29.5 25.5 18.0 37.5 DAY 22 28 31 4 15 29 2 2 3 5 1 13 24 HOUR MAXIMUM PRECIPITATION IN MM. 25.0 0.0 12.0 13.0 13.5 0.0 0.0 0.0 0.0 0.0 3.0 3.0 25.0 DAY 24 ** 21 27 7 ** ** ** ** ** 2 16 MONTHLY TOTAL PRECIPITATION IN MM. 102.0 0.0 27.1 41.5 18.0 0.0 0.0 0.0 0.0 0.0 6.0 5.0 199.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 64.7 29.8 0.0 5.5 NO. OF DAYS WITH PRECIPITATION. 8 0 6 7 3 0 0 0 0 0 4 2 30 NO. OF DAYS PRECIPITATION EQUAL 8 0 5 7 3 0 0 0 0 0 2 2 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 5 0 1 1 1 0 0 0 0 0 0 0 8 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 57 61 68 63 47 32 32 43 46 49 75 74 54 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 46 32 33 22 12 11 24 25 21 45 39 32 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 74 63 44 47 27 14 14 26 28 31 54 57 40 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 21 7 0 0 0 0 0 0 0 0 10 9 47 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 8 0 0 0 0 0 8 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 6 0 0 0 0 0 0 0 0 0 0 0 6 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 15 28 31 30 23 0 0 0 127 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. 29 17 1 1 0 0 0 0 0 0 20 26 94 DATE OF START AND END FREEZING START = 11 NOV. END = 14 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 2.3 6.2 9.8 16.1 20.4 25.3 27.0 26.8 21.3 15.4 11.0 2.9 15.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.7 -0.9 2.5 7.6 11.9 15.6 18.8 17.4 12.4 5.5 2.1 -3.8 7.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.2 13.3 17.3 24.6 29.0 35.1 35.2 36.3 30.3 25.3 19.9 9.7 23.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.9 14.2 14.8 17.0 17.1 19.5 16.4 18.9 17.9 19.8 17.8 13.5 16.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.10 3.49 4.22 4.83 4.99 5.34 7.11 6.18 5.25 3.22 3.30 3.14 4.51 MEAN OF MIXING RATIO AT 09 GMT. 3.74 4.01 4.62 4.57 4.07 5.13 7.00 8.46 5.48 4.67 3.62 3.85 4.93 MEAN OF MIXING RATIO AT 15 GMT. 3.93 3.81 4.07 4.97 4.07 6.62 7.02 7.19 5.69 5.27 3.74 3.59 5.00 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.0 -8.0 -1.5 3.5 6.5 12.0 15.0 10.5 7.5 0.5 -1.5 -9.9 -9.9 DAY 29 1 9 10 8 12 7 16 22 24 26 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.6 16.5 25.0 29.5 35.5 38.0 38.5 39.0 35.0 31.0 24.5 17.5 39.0 DAY 3 22 31 18 31 15 1 4 5 3 1 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 13.5 15.0 6.0 21.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 15.5 21.0 DAY 12 23 20 30 2 ** ** ** ** ** ** 12 MONTHLY TOTAL PRECIPITATION IN MM. 30.5 28.0 9.5 35.5 4.5 0.0 0.0 0.0 0.0 0.0 0.0 36.0 144.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 47.2 27.8 0.0 25.0 NO. OF DAYS WITH PRECIPITATION. 4 2 3 4 3 0 0 0 0 0 0 3 19 NO. OF DAYS PRECIPITATION EQUAL 3 2 2 4 2 0 0 0 0 0 0 3 16 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 2 0 1 0 0 0 0 0 0 0 2 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 80 74 70 50 38 30 36 34 40 41 56 76 52 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 55 43 39 23 17 14 18 21 20 22 25 51 29 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 70 48 39 33 21 21 20 20 23 31 34 63 35 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 16 3 0 0 0 0 0 0 0 0 0 17 36 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 9 0 0 0 0 11 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 0 0 0 0 1 1 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 16 30 31 31 13 3 0 0 124 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. 27 18 5 0 0 0 0 0 0 0 4 27 81 DATE OF START AND END FREEZING START = 25 NOV. END = 27 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 2.3 3.6 10.0 12.0 20.2 24.5 27.8 27.3 20.3 13.9 9.9 3.7 14.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.9 -3.3 2.1 4.8 12.4 15.5 19.4 19.8 11.4 4.4 3.4 -3.2 6.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.6 10.4 17.9 19.3 28.1 33.5 36.1 34.8 29.3 23.5 16.4 10.7 22.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.5 13.7 15.8 14.5 15.7 18.0 16.7 15.0 17.9 19.1 13.0 13.9 15.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.87 3.28 4.16 5.40 7.22 5.83 6.34 5.73 5.76 3.31 4.70 3.00 4.80 MEAN OF MIXING RATIO AT 09 GMT. 3.67 3.90 4.18 5.47 6.12 4.59 4.19 5.27 6.37 4.81 4.74 4.12 4.79 MEAN OF MIXING RATIO AT 15 GMT. 3.94 3.67 4.15 4.94 6.50 4.88 4.79 5.36 6.43 4.69 5.22 4.10 4.89 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.5 -10.0 -4.5 -1.5 8.5 11.0 17.5 18.0 5.5 1.0 -0.8 -9.0 -10.5 DAY 31 2 16 3 1 6 8 28 27 15 15 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 17.0 28.0 25.0 32.5 37.5 37.5 36.0 35.0 28.0 23.0 19.5 37.5 DAY 7 27 14 28 28 23 5 2 3 1 4 14 24 HOUR MAXIMUM PRECIPITATION IN MM. 12.5 19.0 7.5 10.0 2.0 0.0 0.0 0.0 0.0 0.0 10.0 4.5 19.0 DAY 31 13 23 13 9 ** ** ** ** ** 9 13 MONTHLY TOTAL PRECIPITATION IN MM. 17.5 34.0 8.5 36.5 5.0 0.0 0.0 0.0 0.0 0.0 20.5 11.0 133.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 45.1 31.2 0.0 23.7 NO. OF DAYS WITH PRECIPITATION. 4 3 2 9 5 0 0 0 0 0 6 4 33 NO. OF DAYS PRECIPITATION EQUAL 4 3 2 8 2 0 0 0 0 0 6 4 29 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 0 1 0 0 0 0 0 0 1 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 79 80 70 69 54 34 31 28 47 46 75 73 57 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 50 52 31 39 24 13 10 14 25 27 40 51 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 66 63 43 44 31 16 14 16 30 33 57 65 40 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 22 11 1 0 0 0 0 0 0 0 0 13 47 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 3 5 0 0 0 0 8 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 10 27 31 31 14 0 0 0 113 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. 31 25 6 1 0 0 0 0 0 0 1 26 90 DATE OF START AND END FREEZING START = 15 NOV. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. -0.8 -1.4 7.1 14.3 17.6 25.8 29.3 25.4 20.0 15.7 8.3 0.5 13.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -7.2 -7.2 1.8 7.8 11.2 19.0 22.3 18.3 10.7 6.3 -0.4 -5.8 6.4 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.7 4.4 12.3 20.9 24.0 32.7 36.2 32.4 29.3 25.0 16.9 6.9 20.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.9 11.6 10.5 13.2 12.8 13.7 13.9 14.1 18.6 18.7 17.3 12.7 14.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.45 2.26 4.50 5.78 6.46 6.10 6.62 6.79 6.06 3.98 3.86 2.88 4.81 MEAN OF MIXING RATIO AT 09 GMT. 4.25 4.10 5.35 5.90 6.08 4.71 5.52 6.01 4.56 4.51 4.45 4.12 4.96 MEAN OF MIXING RATIO AT 15 GMT. 3.63 3.39 4.99 5.44 5.76 5.44 5.76 6.16 5.32 4.88 4.77 3.83 4.95 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -15.5 -16.5 -3.0 2.0 7.5 13.5 13.0 15.5 7.0 -0.5 -4.5 -16.0 -16.5 DAY 21 3 11 4 7 1 7 27 27 31 25 26 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.0 14.5 16.5 24.5 30.0 37.0 38.5 35.5 34.0 27.5 23.5 14.0 38.5 DAY 25 17 14 28 29 29 9 1 3 19 3 12 24 HOUR MAXIMUM PRECIPITATION IN MM. 12.0 11.0 12.5 10.0 7.5 0.0 0.0 0.0 3.0 0.0 6.5 6.0 12.5 DAY 29 7 2 2 28 ** ** ** 10 ** 20 1 MONTHLY TOTAL PRECIPITATION IN MM. 32.0 27.0 50.0 30.0 24.5 0.0 0.0 0.0 5.0 0.0 14.5 12.0 195.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 55.9 27.9 2.6 13.6 NO. OF DAYS WITH PRECIPITATION. 8 4 6 4 6 0 0 0 2 0 4 4 38 NO. OF DAYS PRECIPITATION EQUAL 7 4 6 4 6 0 0 0 2 0 4 4 37 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 2 1 0 0 0 0 0 0 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 73 79 66 58 34 29 38 50 44 70 76 58 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 71 73 56 36 31 14 14 18 16 21 36 62 37 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 79 75 62 42 36 19 18 23 25 32 54 72 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 25 21 0 0 0 0 0 0 0 0 3 22 71 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 5 29 5 0 0 0 0 39 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 5 8 0 0 0 0 0 0 0 0 0 3 16 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 1 30 31 30 19 0 0 0 111 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. 31 26 6 0 0 0 0 0 0 1 18 29 111 DATE OF START AND END FREEZING START = 31 OCT. END = 13 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. -1.0 6.1 10.6 15.9 21.0 25.9 30.0 26.7 20.9 12.0 6.6 2.6 14.8 AVERAGE OF MINIMUM TEMPERATURE IN C. -8.7 -0.5 3.9 8.4 13.6 17.6 23.0 20.1 15.0 6.7 0.4 -3.6 8.0 AVERAGE OF MAXIMUM TEMPERATURE IN C. 6.6 12.7 17.4 23.4 28.3 34.1 37.0 33.4 26.9 17.2 12.8 8.9 21.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.3 13.2 13.5 15.0 14.7 16.5 14.0 13.3 11.9 10.5 12.4 12.5 13.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.52 3.78 4.64 4.65 5.33 5.08 4.99 5.76 5.29 5.12 4.41 3.36 4.58 MEAN OF MIXING RATIO AT 09 GMT. 3.93 4.36 4.67 4.29 4.14 3.90 2.99 5.19 5.33 4.93 4.93 4.89 4.46 MEAN OF MIXING RATIO AT 15 GMT. 3.75 4.37 4.95 4.36 4.55 4.23 4.24 5.73 5.74 4.99 4.86 4.81 4.71 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -14.0 -8.5 -5.0 3.0 9.5 15.5 20.5 17.5 11.5 4.0 -5.5 -7.5 -14.0 DAY 1 7 9 10 7 1 24 31 30 26 29 27 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 19.0 21.5 28.5 32.5 36.5 39.0 36.5 30.5 23.5 19.5 11.5 39.0 DAY 30 19 18 29 29 28 20 1 1 1 17 12 24 HOUR MAXIMUM PRECIPITATION IN MM. 0.0 32.0 10.5 7.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.5 32.0 DAY ** 10 2 16 ** ** ** ** ** ** ** 30 MONTHLY TOTAL PRECIPITATION IN MM. 0.0 41.5 21.5 7.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.5 73.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 86.3 10.3 0.0 3.4 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 1 0 0 0 0 0 0 0 0 0 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 75 69 51 42 29 21 30 39 67 88 83 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 65 50 37 23 16 11 7 14 21 35 47 61 32 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 74 59 49 30 21 13 12 18 27 43 59 74 40 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 28 5 2 0 0 0 0 0 0 0 3 15 53 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 3 27 11 0 0 0 0 41 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 0 9 30 31 31 5 0 0 0 106 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. 31 16 5 0 0 0 0 0 0 0 13 29 94 DATE OF START AND END FREEZING START = 6 NOV. END = 10 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. -1.9 -1.7 6.8 15.4 20.9 24.2 26.9 26.4 21.1 12.3 5.5 1.5 13.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -7.7 -7.3 1.2 10.5 15.2 18.7 19.5 19.7 14.8 6.1 0.1 -5.5 7.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 3.9 4.0 12.3 20.3 26.5 29.7 34.4 33.0 27.4 18.5 10.9 8.6 19.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 11.6 11.3 11.1 9.8 11.3 11.0 14.9 13.3 12.6 12.4 10.8 14.1 12.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.21 2.48 4.54 5.64 6.08 7.16 9.31 8.52 7.22 5.10 4.26 2.95 5.46 MEAN OF MIXING RATIO AT 09 GMT. 4.13 4.08 4.91 4.93 4.51 4.31 5.08 5.48 5.44 4.20 3.79 3.94 4.57 MEAN OF MIXING RATIO AT 15 GMT. 3.60 3.41 4.92 5.06 4.52 5.17 5.74 5.80 5.71 4.61 4.59 3.36 4.71 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.0 -17.0 -6.0 6.0 13.5 17.0 16.5 18.0 11.0 0.0 -3.5 -9.5 -17.0 DAY 13 5 10 2 1 1 26 24 29 22 29 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 9.5 12.0 17.5 24.0 28.5 34.0 38.0 34.5 31.0 24.0 16.0 13.5 38.0 DAY 1 28 30 30 27 30 11 3 3 13 28 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 17.0 18.0 14.5 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 18.0 18.0 DAY 31 20 1 ** ** ** ** ** ** 12 ** 5 MONTHLY TOTAL PRECIPITATION IN MM. 61.0 46.5 23.5 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 49.3 182.3 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 71.9 0.0 0.0 28.1 NO. OF DAYS WITH PRECIPITATION. 8 6 3 0 0 0 0 0 0 1 0 8 26 NO. OF DAYS PRECIPITATION EQUAL 8 6 3 0 0 0 0 0 0 1 0 8 26 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 2 1 0 0 0 0 0 0 0 0 1 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 78 81 56 42 37 43 43 51 60 81 77 61 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 70 69 48 29 19 15 14 16 21 29 41 56 36 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 75 78 62 41 26 21 18 18 26 40 68 62 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 31 24 2 0 0 0 0 0 0 0 0 26 83 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 6 8 0 0 0 0 14 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 4 1 0 0 0 0 0 0 0 0 0 0 5 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 11 31 31 6 0 0 0 79 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. 31 25 9 0 0 0 0 0 0 1 11 30 107 DATE OF START AND END FREEZING START = 22 OCT. END = 12 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 1.0 3.2 6.7 12.5 19.2 25.2 29.4 25.4 20.0 14.4 9.0 1.5 13.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.9 -3.6 0.5 5.6 12.0 17.7 22.0 18.3 10.6 5.2 2.7 -4.9 6.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.9 10.0 12.8 19.4 26.4 32.6 36.7 32.4 29.3 23.6 15.3 7.8 21.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.8 13.6 12.3 13.8 14.4 14.9 14.7 14.1 18.7 18.4 12.6 12.7 14.5 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.72 2.80 3.87 4.78 5.97 8.51 9.29 6.79 5.99 4.67 4.67 2.86 5.24 MEAN OF MIXING RATIO AT 09 GMT. 4.23 4.31 4.20 4.81 7.15 6.15 5.78 6.02 4.77 4.74 4.61 4.17 5.08 MEAN OF MIXING RATIO AT 15 GMT. 3.56 3.55 4.24 5.18 7.34 7.80 6.83 6.25 5.23 4.92 4.84 4.35 5.34 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.0 -9.5 -4.5 0.0 5.5 15.0 19.5 15.5 7.0 3.0 0.5 -9.5 -9.5 DAY 15 13 5 4 7 2 2 27 23 18 15 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.0 16.5 19.5 26.0 34.0 35.5 38.0 35.5 34.0 28.0 23.0 12.5 38.0 DAY 4 23 26 13 30 30 19 1 3 1 4 13 24 HOUR MAXIMUM PRECIPITATION IN MM. 14.0 1.5 12.0 10.0 9.0 0.0 0.0 0.0 0.0 0.0 0.0 9.5 14.0 DAY 18 25 31 17 12 ** ** ** ** ** ** 23 MONTHLY TOTAL PRECIPITATION IN MM. 29.0 1.5 31.0 25.0 16.0 0.0 0.0 0.0 0.0 0.0 0.0 33.0 135.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 45.4 30.3 0.0 24.4 NO. OF DAYS WITH PRECIPITATION. 3 1 4 4 3 0 0 0 0 0 0 7 22 NO. OF DAYS PRECIPITATION EQUAL 3 1 4 4 3 0 0 0 0 0 0 7 22 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 1 1 0 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 64 69 60 54 48 42 38 50 64 77 76 60 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 63 52 44 33 33 19 14 18 17 26 39 56 35 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 69 60 49 40 41 27 19 24 24 33 52 69 42 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 25 19 3 0 0 0 0 0 0 0 0 21 68 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 28 5 0 0 0 0 33 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 0 8 29 31 30 19 0 0 0 117 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. 31 22 15 1 0 0 0 0 0 0 0 30 99 DATE OF START AND END FREEZING START = 2 DEC. END = 4 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 1.1 1.9 4.3 12.3 20.1 23.8 26.9 25.3 21.1 12.8 6.5 3.5 13.3 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.3 -4.1 -0.8 7.9 15.0 18.5 19.4 17.7 14.8 6.9 1.9 -1.8 7.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.4 7.9 9.4 16.8 25.2 29.0 34.4 33.0 27.3 18.6 11.0 8.9 19.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.7 12.0 10.2 8.9 10.2 10.5 15.0 15.3 12.5 11.7 9.1 10.7 11.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.47 2.85 3.96 6.09 6.18 7.29 9.31 8.61 7.22 5.29 4.96 3.73 5.66 MEAN OF MIXING RATIO AT 09 GMT. 4.48 5.07 4.63 5.45 4.82 4.75 5.03 5.48 5.43 4.46 4.79 4.88 4.94 MEAN OF MIXING RATIO AT 15 GMT. 4.44 4.34 4.76 5.07 5.31 5.69 5.74 5.80 5.71 4.76 4.93 4.34 5.08 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.5 -11.5 -10.5 5.0 12.5 17.0 16.5 14.0 11.0 3.0 -1.5 -7.5 -11.5 DAY 17 17 4 3 1 1 26 29 29 27 20 23 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 9.5 9.5 12.5 21.0 27.5 32.5 38.0 34.5 31.0 24.0 12.5 10.0 38.0 DAY 23 14 20 30 23 30 11 3 3 13 4 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.0 9.0 15.0 18.0 6.0 0.0 0.0 0.0 0.0 39.0 6.2 10.2 39.0 DAY 11 28 22 6 14 ** ** ** ** 30 29 22 MONTHLY TOTAL PRECIPITATION IN MM. 15.0 29.2 41.0 32.0 21.5 0.0 0.0 0.0 0.0 56.0 7.7 18.2 220.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 38.6 24.3 0.0 37.1 NO. OF DAYS WITH PRECIPITATION. 3 6 4 3 5 0 0 0 0 2 2 4 29 NO. OF DAYS PRECIPITATION EQUAL 3 6 4 3 5 0 0 0 0 2 2 4 29 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 2 1 0 0 0 0 0 2 0 1 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 73 79 81 69 44 39 43 43 51 62 82 81 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 61 67 55 41 22 17 14 16 21 31 51 60 38 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 71 69 64 45 33 24 18 18 26 42 67 66 45 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 30 12 9 0 0 0 0 0 0 0 0 7 58 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 5 3 0 0 0 0 8 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 0 10 31 31 6 0 0 0 78 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. 31 29 11 0 0 0 0 0 0 0 3 25 99 DATE OF START AND END FREEZING START = 20 NOV. END = 12 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. -0.9 6.8 11.5 13.8 19.5 25.8 29.6 24.8 22.1 14.8 8.5 5.3 15.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -7.3 -2.3 3.2 6.2 11.1 17.2 21.1 18.1 15.6 7.9 1.5 -1.1 7.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.6 15.9 19.8 21.4 27.8 34.3 38.2 31.4 28.5 21.6 15.5 11.7 22.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.9 18.2 16.6 15.2 16.7 17.1 17.1 13.3 12.9 13.7 14.0 12.8 15.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.31 3.04 4.51 5.49 6.13 7.08 6.05 6.64 5.56 5.49 4.40 4.01 5.06 MEAN OF MIXING RATIO AT 09 GMT. 3.96 3.38 4.71 5.52 5.81 4.40 4.72 4.14 5.37 5.68 5.18 5.36 4.85 MEAN OF MIXING RATIO AT 15 GMT. 3.16 3.45 4.82 5.91 6.66 5.57 4.84 5.29 5.45 5.22 5.19 5.11 5.06 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -13.0 -7.0 -1.0 2.5 9.0 10.0 16.5 15.5 13.5 1.5 -2.0 -8.0 -13.0 DAY 14 2 8 16 6 1 30 2 26 24 29 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 11.0 21.5 25.0 27.5 32.5 38.0 40.5 33.5 32.0 26.5 20.0 18.5 40.5 DAY 2 28 8 14 14 30 15 5 10 2 8 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 5.0 2.0 4.0 19.5 13.0 0.0 0.8 0.0 0.0 3.5 19.0 15.5 19.5 DAY 3 7 26 1 24 ** 29 ** ** 26 13 22 MONTHLY TOTAL PRECIPITATION IN MM. 16.4 2.0 4.0 48.0 14.5 0.0 0.8 0.0 0.0 9.0 31.4 50.0 176.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 12.7 35.5 0.5 51.3 NO. OF DAYS WITH PRECIPITATION. 6 1 1 10 2 0 1 0 0 4 4 6 35 NO. OF DAYS PRECIPITATION EQUAL 5 1 1 7 2 0 0 0 0 4 3 6 29 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 1 1 0 0 0 0 0 1 3 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 74 69 64 69 54 40 28 38 38 64 75 83 58 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 61 30 30 34 24 13 11 13 20 33 44 58 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 64 47 42 45 35 21 14 20 23 37 58 68 40 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 27 9 0 0 0 0 0 0 0 0 0 7 43 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 20 0 0 0 0 0 21 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 4 0 0 0 0 0 0 0 0 0 0 0 4 OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 6 26 31 30 9 0 0 0 102 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 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. 31 23 5 0 0 0 0 0 0 0 11 14 84 DATE OF START AND END FREEZING START = 15 NOV. END = 16 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 1.7 5.7 8.5 15.0 19.7 24.1 25.5 25.9 22.1 16.8 7.3 6.2 14.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.1 -0.7 2.1 6.2 10.8 14.8 16.4 17.0 11.7 7.3 0.3 -0.7 6.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 8.5 12.2 15.0 23.7 28.6 33.4 34.6 34.8 32.5 26.3 14.3 13.1 23.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.6 12.9 12.9 17.5 17.8 18.7 18.2 17.8 20.8 19.0 14.0 13.8 16.4 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.74 3.89 4.16 4.68 5.21 6.14 6.38 6.93 4.82 4.38 4.41 3.97 4.81 MEAN OF MIXING RATIO AT 09 GMT. 4.49 5.17 4.69 4.54 4.12 4.25 5.45 5.08 5.20 5.06 4.37 4.33 4.73 MEAN OF MIXING RATIO AT 15 GMT. 3.81 4.46 4.76 4.67 4.11 4.90 5.45 6.14 5.93 5.33 4.63 4.41 4.89 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -4.5 -2.0 0.0 3.5 7.5 12.0 13.0 9.0 5.0 -5.0 -5.0 -10.0 DAY 13 13 17 15 4 1 10 6 23 28 23 26 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.0 18.5 19.5 27.0 32.5 39.0 39.0 36.5 35.0 31.0 20.0 18.5 39.0 DAY 21 20 11 10 26 30 2 8 3 1 2 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 9.0 9.0 7.0 0.0 1.5 0.0 0.0 0.0 0.0 0.0 7.0 37.0 37.0 DAY 4 10 6 ** 2 ** ** ** ** ** 11 3 MONTHLY TOTAL PRECIPITATION IN MM. 13.0 16.0 17.0 0.0 1.5 0.0 0.0 0.0 0.0 0.0 21.3 70.4 139.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 33.0 1.1 0.0 65.9 NO. OF DAYS WITH PRECIPITATION. 2 3 4 0 1 0 0 0 0 0 5 4 19 NO. OF DAYS PRECIPITATION EQUAL 2 3 4 0 1 0 0 0 0 0 5 4 19 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 0 0 0 0 0 0 0 2 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 78 82 68 55 44 38 35 36 39 49 78 75 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 54 39 23 16 12 15 14 16 21 39 43 29 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 63 61 51 34 20 18 17 19 21 31 59 61 38 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 20 1 0 0 0 0 0 0 0 0 4 4 29 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 1 0 0 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 0 0 13 27 31 31 30 3 0 0 135 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. 29 19 4 1 0 0 0 0 0 0 14 18 85 DATE OF START AND END FREEZING START = 4 NOV. END = 15 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 3.8 6.7 8.3 16.1 17.9 23.7 27.3 23.3 21.7 17.6 9.6 3.7 15.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.3 -1.1 1.1 7.8 10.1 14.8 17.9 13.5 11.9 8.3 -0.4 -3.2 6.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.9 14.5 15.4 24.4 25.7 32.7 36.6 33.0 31.5 26.9 19.5 10.7 23.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.2 15.6 14.3 16.6 15.6 17.9 18.7 19.5 19.6 18.6 19.9 13.9 17.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.43 3.92 4.06 5.01 7.04 7.22 7.26 5.98 5.33 5.13 3.62 3.24 5.10 MEAN OF MIXING RATIO AT 09 GMT. 3.65 3.36 3.54 4.62 7.12 6.34 5.91 5.53 6.08 5.61 4.04 3.91 4.98 MEAN OF MIXING RATIO AT 15 GMT. 3.98 4.07 3.62 4.40 6.48 6.79 5.67 5.72 5.67 4.74 3.64 3.67 4.87 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.5 -4.5 -9.0 1.0 6.0 11.5 15.0 10.5 7.5 4.5 -6.5 -6.0 -9.5 DAY 29 6 5 30 1 2 30 31 30 27 22 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 18.0 21.0 29.0 31.5 35.5 39.0 35.5 35.0 32.0 25.5 17.5 39.0 DAY 2 27 24 6 30 26 9 3 14 3 3 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 17.0 4.6 13.5 0.0 16.0 3.5 0.0 0.0 0.0 0.0 0.0 20.0 20.0 DAY 23 9 28 ** 8 3 ** ** ** ** ** 15 MONTHLY TOTAL PRECIPITATION IN MM. 37.8 8.8 14.0 0.0 39.7 6.9 0.0 0.0 0.0 0.0 0.0 51.0 158.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 38.3 29.5 0.0 32.2 NO. OF DAYS WITH PRECIPITATION. 3 2 2 0 5 4 0 0 0 0 0 8 24 NO. OF DAYS PRECIPITATION EQUAL 3 2 1 0 5 3 0 0 0 0 0 8 22 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 1 0 2 0 0 0 0 0 0 2 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 77 69 52 58 42 33 38 43 56 68 77 58 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 42 32 31 22 34 19 14 16 19 23 26 45 27 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 59 54 44 29 37 25 16 19 22 32 40 59 36 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 9 1 3 0 0 0 0 0 0 0 8 14 35 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 0 0 2 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 5 25 31 31 24 2 0 0 118 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. 29 21 11 0 0 0 0 0 0 0 14 29 104 DATE OF START AND END FREEZING START = 17 NOV. END = 11 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 2.7 3.3 8.9 15.6 21.0 25.4 26.0 26.3 22.3 17.1 10.9 5.4 15.4 AVERAGE OF MINIMUM TEMPERATURE IN C. -5.3 -3.5 1.4 7.9 12.9 16.0 17.2 17.8 14.6 9.5 4.7 -0.7 7.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.8 10.0 16.4 23.3 29.2 34.7 34.9 34.8 30.1 24.6 17.1 11.6 23.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 16.1 13.5 15.0 15.4 16.3 18.7 17.7 17.0 15.5 15.1 12.4 12.3 15.4 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.87 3.17 4.36 5.43 5.28 5.87 7.09 6.85 5.88 5.29 4.88 3.66 5.05 MEAN OF MIXING RATIO AT 09 GMT. 3.63 4.09 4.93 5.59 4.77 5.55 5.83 6.74 6.31 6.24 5.65 4.04 5.28 MEAN OF MIXING RATIO AT 15 GMT. 3.46 3.72 4.27 5.60 4.68 5.11 5.25 6.46 6.46 5.72 4.55 3.97 4.94 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -10.0 -10.0 -8.0 1.0 5.0 12.0 15.5 15.0 10.5 2.0 0.0 -5.5 -10.0 DAY 17 2 6 18 1 2 3 30 24 31 27 14 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.5 14.5 22.5 29.0 32.5 38.0 37.5 37.0 33.0 30.0 21.5 15.0 38.0 DAY 6 8 26 24 21 27 30 21 6 4 12 5 24 HOUR MAXIMUM PRECIPITATION IN MM. 15.2 44.0 13.5 14.0 0.0 0.0 0.0 0.0 0.0 2.4 3.5 20.0 44.0 DAY 22 25 15 4 ** ** ** ** ** 30 20 18 MONTHLY TOTAL PRECIPITATION IN MM. 21.7 99.2 32.0 24.2 0.0 0.0 0.0 0.0 0.0 2.4 5.2 20.8 205.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 74.4 11.8 0.0 13.8 NO. OF DAYS WITH PRECIPITATION. 3 7 6 4 0 0 0 0 0 1 3 2 26 NO. OF DAYS PRECIPITATION EQUAL 3 6 5 4 0 0 0 0 0 1 2 1 22 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 3 1 1 0 0 0 0 0 0 0 1 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 77 72 57 39 33 33 35 43 54 71 77 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 41 48 39 30 18 15 15 17 21 30 42 44 30 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 55 57 49 39 22 17 15 20 27 35 45 54 36 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 25 14 5 0 0 0 0 0 0 0 0 5 49 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 12 29 31 31 18 1 0 0 122 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. 29 28 11 0 0 0 0 0 0 0 1 19 88 DATE OF START AND END FREEZING START = 27 NOV. END = 19 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 3.3 5.5 11.1 15.3 19.4 23.5 26.2 25.5 20.9 14.6 10.7 6.8 15.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.4 -1.1 3.3 7.1 11.1 15.3 18.0 16.4 11.5 6.4 2.1 -0.8 7.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.7 12.1 18.6 23.0 27.6 31.7 34.4 34.6 30.2 22.8 19.3 14.4 23.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.1 13.2 15.3 15.9 16.5 16.4 16.4 18.2 18.7 16.4 17.1 15.2 16.0 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.14 3.54 4.22 4.86 5.68 6.70 6.56 6.24 5.04 4.67 3.99 3.15 4.81 MEAN OF MIXING RATIO AT 09 GMT. 3.71 3.93 3.91 4.55 4.97 5.99 6.56 6.74 5.76 5.56 4.30 3.74 4.98 MEAN OF MIXING RATIO AT 15 GMT. 3.42 3.67 3.85 4.49 4.68 5.55 6.08 6.60 6.38 5.53 3.90 3.34 4.79 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -7.0 -5.5 -3.5 -2.0 5.0 10.0 12.5 12.0 4.5 2.5 -4.0 -5.0 -7.0 DAY 6 4 5 2 3 6 31 31 25 24 26 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.5 16.5 24.0 29.5 32.5 35.5 37.5 36.5 34.5 27.0 22.5 16.5 37.5 DAY 25 8 20 22 27 24 4 13 19 4 2 15 24 HOUR MAXIMUM PRECIPITATION IN MM. 14.0 20.0 6.2 12.0 1.5 2.5 0.0 0.0 0.0 3.0 4.2 10.2 20.0 DAY 12 11 28 17 16 22 ** ** ** 22 29 31 MONTHLY TOTAL PRECIPITATION IN MM. 22.5 27.5 14.2 12.0 2.0 2.5 0.0 0.0 0.0 3.8 10.5 10.8 105.8 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 60.7 15.6 0.0 23.7 NO. OF DAYS WITH PRECIPITATION. 5 4 4 4 3 1 0 1 0 6 5 3 36 NO. OF DAYS PRECIPITATION EQUAL 4 2 3 1 1 1 0 0 0 1 3 1 17 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 0 1 0 0 0 0 0 0 0 1 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 73 65 55 47 42 36 39 42 59 64 66 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 48 41 27 26 19 19 17 17 20 29 29 33 27 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 51 48 34 32 23 20 18 20 27 36 36 39 32 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 12 3 0 0 0 0 0 0 0 0 1 1 17 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 0 0 0 0 0 2 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 10 23 31 31 20 0 0 0 115 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. 23 16 3 1 0 0 0 0 0 0 7 23 73 DATE OF START AND END FREEZING START = 23 NOV. END = 2 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 3.1 2.4 7.4 16.3 21.3 25.7 26.0 26.4 22.4 15.2 7.7 1.9 14.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.2 -4.7 0.4 7.9 13.3 16.4 16.9 16.8 13.0 8.0 0.4 -5.1 6.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.4 9.5 14.4 24.7 29.2 35.0 35.1 36.0 31.8 22.4 15.1 8.8 22.6 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.6 14.2 14.0 16.8 15.9 18.6 18.2 19.2 18.8 14.4 14.7 13.9 15.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.04 2.62 3.72 5.23 6.57 6.30 5.64 6.17 5.26 6.14 4.40 3.12 4.85 MEAN OF MIXING RATIO AT 09 GMT. 3.75 3.02 3.69 5.65 6.69 6.03 6.28 7.03 6.74 7.21 5.19 3.88 5.43 MEAN OF MIXING RATIO AT 15 GMT. 3.37 2.81 3.55 5.07 6.32 5.59 6.28 6.63 5.87 7.25 5.09 3.76 5.13 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.5 -9.5 -4.0 0.5 11.0 13.0 14.5 10.5 10.0 4.0 -4.5 -9.5 -9.5 DAY 21 19 6 1 11 2 21 29 27 30 28 12 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.5 14.0 19.0 28.5 32.5 38.0 38.5 39.5 34.5 28.0 19.0 14.0 39.5 DAY 25 28 24 24 19 12 30 5 5 1 8 28 24 HOUR MAXIMUM PRECIPITATION IN MM. 7.2 3.5 9.0 1.0 6.5 0.0 0.0 0.0 0.0 6.0 13.0 6.6 13.0 DAY 29 14 25 15 24 ** ** ** ** 9 1 14 MONTHLY TOTAL PRECIPITATION IN MM. 22.4 10.2 28.4 1.6 14.4 0.0 0.0 0.0 0.0 19.6 31.7 15.1 143.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 42.5 11.2 0.0 46.3 NO. OF DAYS WITH PRECIPITATION. 7 6 10 4 6 0 0 0 0 9 8 6 56 NO. OF DAYS PRECIPITATION EQUAL 6 4 7 1 3 0 0 0 0 7 5 4 37 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 0 0 0 0 0 0 0 2 0 2 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 75 71 69 58 50 37 33 36 42 70 80 85 59 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 47 38 34 27 24 16 17 17 21 40 43 50 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 54 45 41 30 30 18 19 19 23 54 61 64 38 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 10 17 1 0 0 0 0 0 0 0 2 19 49 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 4 0 0 0 0 4 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 26 0 0 0 129 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. 30 27 15 0 0 0 0 0 0 0 17 31 120 DATE OF START AND END FREEZING START = 12 NOV. END = 30 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 1.1 3.9 ***** 13.0 20.3 ***** ***** 28.1 ***** 15.2 11.2 4.9 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -5.5 -3.5 ***** 5.3 12.5 ***** ***** 18.5 ***** 4.9 1.5 -2.6 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.9 11.5 ***** 20.7 28.2 ***** ***** 37.5 ***** 25.6 20.9 12.1 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.4 15.0 ***** 15.4 15.7 ***** ***** 19.0 ***** 20.7 19.4 14.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.82 3.18 ***** 4.75 7.24 ***** ***** 7.00 ***** 3.41 3.28 3.23 ***** MEAN OF MIXING RATIO AT 09 GMT. 3.84 3.41 ***** 5.09 6.98 ***** ***** 7.63 ***** 5.26 4.92 4.22 ***** MEAN OF MIXING RATIO AT 15 GMT. 3.25 3.79 ***** 4.86 6.62 ***** ***** 7.02 ***** 4.13 3.61 3.64 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -12.0 -9.0 ***** 0.0 7.0 ***** ***** 15.0 ***** 0.0 -1.0 -8.5 ****** DAY 29 2 ** 2 7 ** ** 22 ** 23 27 22 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 13.5 16.0 ***** 25.0 32.0 ***** ***** 39.5 ***** 31.5 26.0 19.5 ****** DAY 2 25 ** 17 18 ** ** 2 ** 4 1 9 24 HOUR MAXIMUM PRECIPITATION IN MM. 14.2 0.0 ***** 14.5 4.5 ***** ***** 0.0 ***** 0.0 4.4 8.0 ****** DAY 15 ** ** 1 2 ** ** ** ** ** 11 18 MONTHLY TOTAL PRECIPITATION IN MM. 43.3 0.0 ***** 20.5 7.4 ***** ***** 0.0 ***** 0.0 4.4 14.5 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 48.1 31.0 0.0 21.0 NO. OF DAYS WITH PRECIPITATION. 7 2 *** 7 7 *** *** 0 *** 0 1 5 *** NO. OF DAYS PRECIPITATION EQUAL 6 0 *** 4 3 *** *** 0 *** 0 1 4 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 *** 1 0 *** *** 0 *** 0 0 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 84 81 *** 61 58 *** *** 38 *** 48 59 77 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 53 37 *** 31 26 *** *** 17 *** 23 29 45 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 62 59 *** 39 31 *** *** 19 *** 28 31 52 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 22 12 *** 0 0 *** *** 0 *** 0 0 11 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 *** 0 0 *** *** 6 *** 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 *** 0 0 *** *** 0 *** 0 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 *** 0 11 *** *** 30 *** 3 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 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 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 28 22 *** 2 0 *** *** 0 *** 1 9 22 *** DATE OF START AND END FREEZING START = 23 OCT. END = 3 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 3.3 3.8 10.3 15.4 17.1 25.2 26.1 28.1 22.9 14.7 10.2 2.2 14.9 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.4 -4.2 3.1 7.3 9.1 16.0 16.9 18.8 13.4 5.2 2.6 -4.2 6.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.9 11.7 17.4 23.6 25.1 34.3 35.3 37.4 32.4 24.2 17.9 8.8 23.2 DIFFERENCE BETWEEN AVERAGE MAXIMUM 15.3 15.9 14.3 16.3 16.0 18.3 18.4 18.6 19.0 19.0 15.3 13.0 16.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.90 3.11 4.66 4.88 5.82 7.27 7.09 6.74 5.02 3.83 4.54 2.95 4.90 MEAN OF MIXING RATIO AT 09 GMT. 3.48 3.58 5.11 5.10 6.46 8.00 8.31 9.34 7.50 5.25 5.89 3.85 5.99 MEAN OF MIXING RATIO AT 15 GMT. 3.50 3.65 5.35 5.41 6.21 7.66 8.68 9.75 7.12 5.16 5.23 3.70 5.95 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.0 -10.0 -3.5 3.0 3.5 10.0 14.0 16.5 6.0 -3.0 -1.5 -9.0 -10.0 DAY 31 20 1 1 2 3 10 30 30 23 22 21 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 17.0 22.0 26.5 27.5 30.0 37.5 37.0 39.5 36.5 29.5 22.0 16.0 39.5 DAY 6 13 10 20 27 22 27 15 1 6 4 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 20.0 6.4 22.6 10.0 10.3 1.0 0.0 0.0 0.0 0.7 9.0 5.5 22.6 DAY 17 24 20 17 10 2 ** ** ** 19 12 28 MONTHLY TOTAL PRECIPITATION IN MM. 25.1 11.4 60.8 10.0 24.7 1.0 0.0 0.0 0.0 0.7 15.1 12.7 161.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 60.2 22.1 0.0 17.6 NO. OF DAYS WITH PRECIPITATION. 4 3 12 3 4 1 0 0 0 1 4 6 38 NO. OF DAYS PRECIPITATION EQUAL 2 3 9 1 3 1 0 0 0 0 3 4 26 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 2 1 1 0 0 0 0 0 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 77 70 54 55 43 39 37 40 50 73 80 58 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 41 40 40 26 31 22 21 21 22 25 43 50 32 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 58 54 54 35 36 25 26 26 29 38 53 66 42 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 20 17 0 0 0 0 0 0 0 0 0 19 56 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 1 4 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 1 27 31 31 25 0 0 0 115 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. 30 27 2 0 0 0 0 0 0 5 4 30 98 DATE OF START AND END FREEZING START = 21 OCT. END = 17 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 5.6 5.7 ***** 16.3 20.2 26.5 28.8 25.1 23.9 16.8 11.1 4.9 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -2.8 -2.2 ***** 7.8 11.4 17.4 20.1 16.3 13.8 7.0 3.3 -1.8 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.0 13.6 ***** 24.8 29.1 35.8 37.5 33.9 33.9 26.6 18.8 11.7 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 16.8 15.8 ***** 16.9 17.7 18.3 17.4 17.6 20.1 19.6 15.5 13.5 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.09 3.03 ***** 4.76 4.92 6.08 6.16 6.28 5.01 4.23 4.75 3.42 ***** MEAN OF MIXING RATIO AT 09 GMT. 3.97 2.82 ***** 4.79 5.65 6.88 6.65 7.25 7.41 6.35 6.64 4.29 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.19 3.04 ***** 4.59 5.40 6.90 7.02 7.41 6.58 5.12 5.54 3.76 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.5 -7.0 ***** 2.0 4.5 13.5 18.5 13.5 11.5 2.0 -0.5 -7.5 ****** DAY 1 7 ** 7 5 10 5 13 20 25 30 31 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.0 21.0 ***** 29.5 35.5 39.0 39.5 37.5 35.5 32.5 24.0 19.0 ****** DAY 27 15 ** 21 31 25 22 3 7 3 4 1 24 HOUR MAXIMUM PRECIPITATION IN MM. 2.8 22.5 ***** 1.8 0.5 0.0 0.0 0.0 0.0 0.0 10.4 12.8 ****** DAY 2 1 ** 8 16 ** ** ** ** ** 13 19 MONTHLY TOTAL PRECIPITATION IN MM. 5.8 23.5 ***** 2.8 1.0 0.0 0.0 0.0 0.0 0.0 23.8 24.9 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 35.8 4.6 0.0 59.5 NO. OF DAYS WITH PRECIPITATION. 4 3 *** 2 2 0 0 1 0 0 8 4 *** NO. OF DAYS PRECIPITATION EQUAL 3 2 *** 2 0 0 0 0 0 0 5 4 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 *** 0 0 0 0 0 0 0 1 1 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 72 66 *** 54 42 34 28 39 38 50 71 75 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 37 27 *** 23 21 18 15 20 20 26 44 46 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 55 41 *** 28 24 21 18 25 23 31 52 55 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 12 6 *** 0 0 0 0 0 0 0 0 7 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 *** 0 0 1 8 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 14 29 31 30 30 3 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. 23 24 *** 0 0 0 0 0 0 0 1 25 *** DATE OF START AND END FREEZING START = 30 NOV. END = 28 FEB. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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.***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 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 NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 5.7 7.0 8.8 15.0 21.9 25.8 27.0 26.8 23.9 14.2 10.6 4.8 16.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.0 -2.0 1.0 6.4 13.0 16.6 18.1 17.7 14.6 7.6 3.0 -2.8 7.5 AVERAGE OF MAXIMUM TEMPERATURE IN C. 14.3 15.9 16.5 23.7 30.9 35.0 35.9 36.0 33.3 20.8 18.3 12.3 24.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 17.3 17.9 15.5 17.3 17.9 18.4 17.8 18.3 18.7 13.2 15.3 15.1 16.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.75 3.34 4.14 4.85 6.05 5.90 6.65 6.16 5.43 5.28 4.34 3.15 4.83 MEAN OF MIXING RATIO AT 09 GMT. 3.30 3.93 4.36 5.09 6.50 6.48 7.38 7.68 6.73 6.25 5.01 4.26 5.58 MEAN OF MIXING RATIO AT 15 GMT. 3.10 3.67 4.11 4.64 6.25 6.50 7.16 7.23 5.99 5.75 4.60 3.68 5.22 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 -6.0 -4.0 -1.0 9.0 13.0 15.5 15.0 10.5 3.5 -3.5 -7.0 -7.0 DAY 2 23 15 6 8 1 17 31 24 12 30 1 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.5 22.0 20.5 29.5 34.0 37.0 38.5 38.5 37.5 29.5 24.5 18.5 38.5 DAY 18 2 7 29 16 5 12 15 7 4 6 20 24 HOUR MAXIMUM PRECIPITATION IN MM. 6.0 8.0 27.0 7.5 4.0 0.0 7.0 0.0 0.0 9.5 2.5 10.0 27.0 DAY 6 14 30 4 20 ** 27 ** ** 27 3 24 MONTHLY TOTAL PRECIPITATION IN MM. 6.0 16.0 41.0 8.8 8.6 0.0 9.5 0.0 0.0 23.5 2.5 22.5 138.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 45.5 12.6 6.9 35.0 NO. OF DAYS WITH PRECIPITATION. 1 4 4 2 3 0 3 0 0 5 1 4 27 NO. OF DAYS PRECIPITATION EQUAL 1 3 4 2 3 0 3 0 0 5 1 4 26 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. 63 64 67 57 44 35 38 37 41 63 67 71 54 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 30 34 38 26 22 17 19 19 20 39 36 43 29 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 41 41 44 31 27 20 23 22 22 44 42 47 34 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 15 11 1 0 0 0 0 0 0 0 0 9 36 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 0 2 0 0 0 0 2 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 24 30 28 31 29 0 0 0 142 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. 27 23 13 2 0 0 0 0 0 0 4 28 97 DATE OF START AND END FREEZING START = 27 NOV. END = 7 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 2.4 4.3 10.6 15.4 21.2 24.9 28.6 27.3 23.5 17.8 10.6 6.3 16.1 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.2 -2.2 3.3 7.5 12.6 15.4 19.6 18.4 13.8 8.4 2.1 -1.4 7.8 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.0 10.8 18.0 23.3 29.9 34.3 37.6 36.1 33.1 27.1 19.1 13.9 24.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.2 13.0 14.7 15.8 17.3 18.9 18.0 17.7 19.3 18.7 17.0 15.3 16.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.69 3.36 3.89 5.08 5.71 6.16 8.01 7.16 5.10 4.56 3.80 3.05 4.88 MEAN OF MIXING RATIO AT 09 GMT. 3.48 3.93 4.35 5.60 5.65 6.52 9.59 8.16 6.50 6.10 4.78 3.86 5.71 MEAN OF MIXING RATIO AT 15 GMT. 3.31 3.70 4.08 5.41 5.74 6.04 8.51 8.38 5.77 5.22 3.66 3.21 5.25 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.0 -7.5 -3.0 0.5 8.0 13.0 15.0 15.5 10.0 5.0 -5.0 -9.5 -9.5 DAY 1 7 6 2 8 8 28 12 25 23 24 30 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 17.0 23.5 28.5 34.0 37.5 42.0 38.0 37.0 30.0 26.0 19.0 42.0 DAY 17 24 30 18 28 14 25 4 9 7 8 8 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.5 15.5 16.5 10.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 0.0 16.5 DAY 18 3 9 26 ** ** ** ** ** ** 13 ** MONTHLY TOTAL PRECIPITATION IN MM. 5.5 32.9 37.0 15.5 0.0 0.0 0.0 0.0 0.0 0.0 4.5 0.0 95.4 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 79.0 16.2 0.0 4.7 NO. OF DAYS WITH PRECIPITATION. 2 4 4 3 0 0 0 0 0 0 2 0 15 NO. OF DAYS PRECIPITATION EQUAL 2 4 4 3 0 0 0 0 0 0 2 0 15 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 1 2 1 0 0 0 0 0 0 0 0 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 68 73 56 57 44 37 41 41 40 51 61 64 53 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 45 46 35 30 20 18 22 20 19 25 31 36 29 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 52 52 39 37 25 20 23 26 24 32 33 41 34 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 20 8 0 0 0 0 0 0 0 0 6 4 38 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 9 1 0 0 0 0 10 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 31 31 27 1 0 0 138 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 6 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. 30 25 4 0 0 0 0 0 0 0 12 23 94 DATE OF START AND END FREEZING START = 15 NOV. END = 25 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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.***** 3.0 9.6 15.2 20.3 26.5 28.5 27.0 23.1 18.2 10.0 6.5 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** -4.5 2.5 7.6 12.0 17.1 19.7 17.9 13.6 9.1 2.9 -0.5 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** 10.3 16.6 22.9 28.7 35.9 37.3 36.1 32.7 27.4 17.1 13.5 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** 14.8 14.1 15.3 16.7 18.8 17.6 18.2 19.1 18.3 14.2 14.0 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** 2.75 3.99 5.00 6.08 5.77 7.49 6.38 4.63 4.07 4.62 3.42 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** 3.90 4.91 5.32 5.96 6.63 8.08 7.78 6.10 5.67 6.00 4.30 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** 3.38 4.24 5.04 5.60 5.91 7.92 7.34 6.18 4.66 5.51 4.12 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** -9.0 -4.5 0.5 5.5 13.5 16.0 15.5 8.5 5.5 0.0 -3.5 ****** DAY ** 7 31 1 1 2 25 19 23 24 23 18 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** 18.5 22.0 28.5 36.5 39.5 41.0 38.5 36.5 33.0 20.0 18.0 ****** DAY ** 28 7 15 31 28 10 5 3 9 3 1 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** 5.0 12.5 4.5 2.0 0.0 0.0 0.0 0.0 0.0 11.5 52.5 ****** DAY ** 11 24 22 8 ** ** ** ** ** 2 4 MONTHLY TOTAL PRECIPITATION IN MM. ***** 12.0 28.7 12.5 2.0 0.0 0.0 0.0 0.0 0.0 33.0 66.3 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 26.3 9.4 0.0 64.3 NO. OF DAYS WITH PRECIPITATION. *** 5 5 5 2 0 0 0 0 0 5 3 *** NO. OF DAYS PRECIPITATION EQUAL *** 4 5 5 1 0 0 0 0 0 5 3 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** 0 1 0 0 0 0 0 0 0 1 2 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** 71 64 57 50 34 37 38 38 45 71 67 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** 47 39 29 24 17 19 19 19 23 45 42 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** 51 45 36 27 18 21 22 25 30 58 58 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** 14 2 0 0 0 0 0 0 0 0 0 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** 0 0 0 0 0 12 3 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 13 30 31 31 24 6 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** 0 0 0 0 0 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. *** 25 3 0 0 0 0 0 0 0 4 22 *** DATE OF START AND END FREEZING START = 23 NOV. END = 31 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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.***** ***** ***** 15.1 21.7 26.8 28.5 28.8 24.6 17.4 12.5 6.4 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** 7.0 12.9 17.6 20.4 19.9 14.8 8.5 3.4 -2.0 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** 23.3 30.6 35.9 36.5 37.6 34.4 26.3 21.5 14.7 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM ***** ***** ***** 16.3 17.7 18.3 16.1 17.7 19.6 17.8 18.1 16.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. ***** ***** ***** 4.78 5.78 6.21 7.97 6.96 4.52 4.47 3.61 2.98 ***** MEAN OF MIXING RATIO AT 09 GMT. ***** ***** ***** 4.94 6.29 7.53 8.91 8.77 6.76 5.99 5.68 4.33 ***** MEAN OF MIXING RATIO AT 15 GMT. ***** ***** ***** 4.98 6.54 7.77 9.67 10.02 5.25 6.03 5.52 4.32 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. ***** ***** ***** 2.0 7.5 11.5 16.0 15.5 11.5 4.0 0.0 -9.5 ****** DAY ** ** ** 6 14 1 19 16 20 30 30 28 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. ***** ***** ***** 30.5 35.0 38.5 39.0 39.5 37.5 31.5 25.5 22.0 ****** DAY ** ** ** 27 21 28 4 16 1 4 4 5 24 HOUR MAXIMUM PRECIPITATION IN MM. ***** ***** ***** 8.5 0.0 0.0 1.0 0.0 0.0 0.0 0.0 8.5 ****** DAY ** ** ** 3 ** ** 7 ** ** ** ** 21 MONTHLY TOTAL PRECIPITATION IN MM. ***** ***** ***** 8.5 0.0 0.0 1.0 0.0 0.0 0.0 0.0 12.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION ***** 39.5 4.7 55.8 NO. OF DAYS WITH PRECIPITATION. *** *** *** 1 0 0 1 0 0 0 0 2 *** NO. OF DAYS PRECIPITATION EQUAL *** *** *** 1 0 0 1 0 0 0 0 2 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL *** *** *** 0 0 0 0 0 0 0 0 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. *** *** *** 56 44 35 40 36 34 51 57 65 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. *** *** *** 27 21 19 22 20 18 26 32 40 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. *** *** *** 34 28 24 28 29 20 39 52 60 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** 0 0 0 0 0 0 0 0 6 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL *** *** *** 0 0 3 16 9 0 0 0 0 *** OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** 0 0 0 0 0 0 0 0 1 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL *** *** *** 1 19 29 31 31 30 5 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. *** *** *** 0 0 0 0 0 0 0 1 20 *** DATE OF START AND END FREEZING START = 30 NOV. END = 31 DEC. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 4.4 4.1 9.6 16.2 20.5 25.7 28.7 27.3 23.4 16.4 11.1 4.9 16.0 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.3 -3.6 2.6 8.0 12.0 16.7 19.7 18.0 13.5 8.2 3.1 -0.9 7.9 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.0 11.9 16.5 24.4 29.0 34.6 37.7 36.7 33.2 24.6 19.1 10.8 24.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.3 15.5 13.9 16.4 17.0 17.9 18.0 18.7 19.7 16.4 16.0 11.7 16.2 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.27 3.04 4.85 5.33 5.29 6.89 7.95 6.86 5.01 5.98 4.40 3.93 5.23 MEAN OF MIXING RATIO AT 09 GMT. 3.98 3.72 6.26 6.32 6.37 8.37 10.33 9.32 6.62 7.72 6.21 4.32 6.63 MEAN OF MIXING RATIO AT 15 GMT. 4.20 3.84 6.19 6.52 6.07 8.25 11.04 10.91 7.24 7.87 6.22 4.78 6.93 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.5 -9.5 -1.5 3.5 6.5 13.5 18.0 14.5 6.5 5.5 -1.5 -7.0 -9.5 DAY 7 14 8 14 4 1 29 26 28 31 28 20 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 18.5 22.5 30.0 34.5 37.5 40.2 40.0 38.0 28.0 25.5 15.0 40.2 DAY 23 26 22 22 30 29 10 8 9 10 1 13 24 HOUR MAXIMUM PRECIPITATION IN MM. 8.0 5.0 25.0 2.0 0.0 1.0 0.0 0.0 1.5 14.5 8.0 14.5 25.0 DAY 14 21 6 4 ** 23 ** ** 29 16 16 4 MONTHLY TOTAL PRECIPITATION IN MM. 23.0 8.0 55.5 4.0 0.0 1.0 0.0 0.0 1.5 16.5 8.0 58.0 175.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 49.3 2.8 0.9 47.0 NO. OF DAYS WITH PRECIPITATION. 5 2 8 3 0 1 0 0 1 2 1 8 31 NO. OF DAYS PRECIPITATION EQUAL 5 2 8 3 0 1 0 0 1 2 1 8 31 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 2 0 0 0 0 0 0 1 0 1 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 74 70 77 59 42 41 42 41 41 69 72 80 59 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 47 40 51 31 25 23 24 22 20 37 40 49 34 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 64 54 62 40 28 27 29 32 30 56 63 71 46 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 10 16 0 0 0 0 0 0 0 0 0 10 36 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 7 1 0 0 0 0 8 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 12 30 31 31 24 0 0 0 132 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 4 2 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. 24 23 9 0 0 0 0 0 0 0 7 17 80 DATE OF START AND END FREEZING START = 17 NOV. END = 13 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. -0.5 3.5 6.3 13.9 18.0 24.5 28.4 25.7 21.3 16.6 11.4 5.5 14.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -6.9 -3.4 -0.5 6.4 10.5 16.2 19.9 17.0 11.7 7.2 3.3 -1.5 6.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 5.8 10.3 13.2 21.4 25.4 32.7 36.9 34.5 31.0 26.1 19.4 12.6 22.4 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.7 13.7 13.7 15.0 14.9 16.5 17.0 17.5 19.3 18.9 16.1 14.1 15.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.60 2.80 3.32 4.98 7.06 6.89 7.59 7.20 4.95 3.77 3.96 3.55 4.89 MEAN OF MIXING RATIO AT 09 GMT. 3.42 3.24 3.63 4.88 7.49 6.85 8.72 8.29 6.46 5.07 4.71 4.64 5.62 MEAN OF MIXING RATIO AT 15 GMT. 3.29 3.23 3.67 4.83 7.27 7.47 10.37 8.76 6.92 5.94 5.03 4.50 5.94 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -11.0 -8.0 -7.5 0.2 4.5 11.5 16.5 12.5 8.0 2.5 -7.0 -8.0 -11.0 DAY 26 13 11 2 5 6 27 31 13 2 27 29 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 12.5 16.5 21.0 34.0 31.5 37.5 39.5 38.5 33.5 30.0 25.0 19.0 39.5 DAY 17 20 30 17 30 29 6 6 15 3 1 6 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.5 17.5 18.5 6.5 31.0 9.5 0.0 0.0 0.0 0.0 0.0 3.5 31.0 DAY 21 25 31 26 6 14 ** ** ** ** ** 9 MONTHLY TOTAL PRECIPITATION IN MM. 40.5 17.5 24.0 10.5 58.5 9.5 0.0 0.0 0.0 0.0 0.0 12.0 172.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 47.5 45.5 0.0 7.0 NO. OF DAYS WITH PRECIPITATION. 6 1 4 3 5 1 0 0 0 0 0 7 27 NO. OF DAYS PRECIPITATION EQUAL 6 1 4 3 5 1 0 0 0 0 0 7 27 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 1 1 0 2 0 0 0 0 0 0 0 6 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 76 71 69 63 67 45 39 46 46 46 60 74 59 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 56 40 35 30 36 21 21 23 21 22 30 49 32 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 70 52 46 38 42 26 29 29 32 41 49 65 43 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 24 12 5 0 0 0 0 0 0 0 1 5 47 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 11 3 0 0 0 0 16 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 1 2 26 31 29 21 1 0 0 111 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. 31 26 16 0 0 0 0 0 0 0 6 23 102 DATE OF START AND END FREEZING START = 20 NOV. END = 28 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 1.7 5.6 8.3 15.1 19.3 25.4 27.9 ***** 21.6 15.8 10.4 7.2 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -4.4 -1.0 2.1 7.8 11.9 16.4 19.4 ***** 12.1 7.0 3.0 -0.6 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.7 12.2 14.6 22.5 26.6 34.4 36.3 ***** 31.2 24.7 17.9 15.1 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.1 13.2 12.5 14.7 14.7 18.0 16.9 ***** 19.1 17.7 14.9 15.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.89 3.40 3.97 5.46 7.47 7.22 8.74 ***** 4.23 3.92 3.87 2.84 ***** MEAN OF MIXING RATIO AT 09 GMT. 3.44 3.89 4.43 5.51 7.84 8.14 11.19 ***** 6.13 5.48 5.20 5.48 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.00 4.27 4.71 5.41 7.78 8.82 11.54 ***** 5.55 6.00 4.89 4.11 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.5 -6.0 -2.8 4.0 6.5 12.5 16.5 ***** 10.0 1.4 -3.5 -4.5 ****** DAY 16 18 17 13 1 5 23 ** 18 9 30 7 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 16.5 19.5 22.0 28.5 34.0 38.5 39.5 ***** 34.0 32.0 24.0 18.8 ****** DAY 30 27 31 18 27 18 15 ** 14 1 3 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 27.0 34.0 15.0 7.5 9.0 0.0 0.0 ***** 0.0 0.0 44.0 0.0 ****** DAY 8 3 9 9 6 ** ** ** ** ** 12 ** MONTHLY TOTAL PRECIPITATION IN MM. 40.5 50.0 41.5 7.5 17.0 0.0 0.0 ***** 0.0 0.0 56.3 0.0 ****** ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 62.0 11.5 0.0 26.5 NO. OF DAYS WITH PRECIPITATION. 5 4 4 1 3 0 0 *** 0 0 5 0 *** NO. OF DAYS PRECIPITATION EQUAL 5 4 4 1 3 0 0 *** 0 0 4 0 *** OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 2 0 0 0 0 *** 0 0 1 0 *** OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 77 70 68 63 65 44 46 *** 37 49 59 60 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 51 42 42 32 35 22 27 *** 19 26 39 49 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 78 60 54 39 41 29 34 *** 24 43 52 53 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 18 6 0 0 0 0 0 *** 0 0 0 2 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 9 *** 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 0 11 29 31 *** 15 4 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. 30 18 9 0 0 0 0 *** 0 0 6 20 *** DATE OF START AND END FREEZING START = 15 NOV. END = 25 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 5.6 6.0 10.6 16.4 20.0 25.6 29.7 29.2 20.7 16.2 11.6 4.2 16.3 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.4 -1.4 2.9 8.2 11.1 16.4 20.7 19.9 11.5 8.3 4.5 -3.0 8.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 12.5 13.4 18.3 24.6 29.0 34.9 38.6 38.4 29.9 24.1 18.7 11.4 24.5 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.9 14.8 15.4 16.4 17.9 18.5 17.9 18.5 18.4 15.8 14.2 14.4 16.3 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.02 2.84 4.02 5.13 5.98 5.94 7.35 7.95 5.04 5.46 4.96 2.47 5.01 MEAN OF MIXING RATIO AT 09 GMT. 4.38 4.08 4.07 6.00 6.10 7.50 7.95 11.04 7.25 7.99 6.73 3.75 6.40 MEAN OF MIXING RATIO AT 15 GMT. 4.06 3.67 4.22 6.12 7.16 7.30 10.11 11.61 7.73 8.04 6.23 3.62 6.66 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.8 -7.0 -1.2 2.5 1.0 9.5 16.0 16.0 5.5 4.5 -1.0 -10.5 -10.5 DAY 28 4 16 6 6 26 1 24 22 13 27 7 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 21.0 19.0 25.0 30.5 34.5 38.0 41.0 41.0 38.0 29.5 24.5 17.5 41.0 DAY 1 28 31 24 31 20 25 6 1 1 4 19 24 HOUR MAXIMUM PRECIPITATION IN MM. 18.0 7.1 20.0 4.0 5.5 0.0 1.5 0.0 0.8 7.2 21.0 6.5 21.0 DAY 24 1 12 2 26 ** 12 ** 29 7 17 3 MONTHLY TOTAL PRECIPITATION IN MM. 25.5 12.6 33.3 13.9 7.6 0.0 1.5 0.0 0.8 23.7 39.9 9.4 168.2 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 42.4 12.8 1.4 43.4 NO. OF DAYS WITH PRECIPITATION. 5 3 3 4 4 0 1 0 1 9 9 3 42 NO. OF DAYS PRECIPITATION EQUAL 4 2 3 4 1 0 1 0 0 8 6 3 32 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 0 1 0 0 0 0 0 0 0 1 0 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 65 63 65 58 56 41 39 43 46 62 71 61 56 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 45 43 32 30 24 21 18 24 25 38 48 39 32 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 58 49 40 37 32 21 24 32 39 59 63 58 43 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 10 4 0 0 0 0 0 0 0 0 0 14 28 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 13 12 0 0 0 0 27 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 11 30 31 30 14 0 0 0 118 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 13 12 0 0 0 0 25 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 22 9 0 0 0 0 0 0 0 4 25 83 DATE OF START AND END FREEZING START = 11 NOV. END = 19 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 7.0 ***** 10.7 15.4 19.8 24.2 29.6 28.0 23.6 16.8 11.8 3.1 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -1.1 ***** 3.2 8.0 12.1 16.0 20.5 18.4 14.3 7.6 2.5 -2.3 ****** AVERAGE OF MAXIMUM TEMPERATURE IN C. 15.1 ***** 18.3 22.8 27.5 32.4 38.7 37.5 32.9 26.0 21.1 8.4 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 16.2 ***** 15.1 14.8 15.4 16.4 18.2 19.1 18.6 18.4 18.6 10.7 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.28 ***** 3.82 5.82 6.84 7.86 7.41 6.49 5.79 4.50 3.32 3.17 ***** MEAN OF MIXING RATIO AT 09 GMT. 3.99 ***** 5.20 5.95 6.51 7.20 7.82 7.72 7.57 5.59 3.47 4.08 ***** MEAN OF MIXING RATIO AT 15 GMT. 4.17 ***** 5.11 5.83 7.40 7.28 8.63 9.17 7.73 5.87 3.80 3.74 ***** ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.0 ***** -3.4 3.2 8.4 9.8 16.6 16.0 9.2 2.4 -6.4 -6.8 ****** DAY 24 ** 1 7 15 2 6 19 22 21 27 15 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 19.0 ***** 23.5 27.5 32.0 37.0 41.5 39.5 36.5 32.5 26.0 17.0 ****** DAY 5 ** 25 30 21 12 14 6 9 4 1 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 1.7 2.0 9.0 11.5 16.0 10.0 0.0 0.0 0.0 6.0 0.0 14.5 16.0 DAY 12 23 14 23 30 2 ** ** ** 23 ** 12 MONTHLY TOTAL PRECIPITATION IN MM. 2.7 2.0 17.0 32.0 22.0 24.5 0.0 0.0 0.0 6.0 0.0 35.3 141.5 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 15.3 55.5 0.0 29.2 NO. OF DAYS WITH PRECIPITATION. 2 1 2 5 3 4 0 0 0 1 0 6 24 NO. OF DAYS PRECIPITATION EQUAL 2 1 2 4 3 4 0 0 0 1 0 6 23 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 0 1 1 1 0 0 0 0 0 1 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 72 *** 62 68 56 50 36 38 45 57 56 76 *** MEAN OF RELATIVE HUMIDITY AT 09 GMT. 34 *** 37 34 26 23 17 17 22 25 20 57 *** MEAN OF RELATIVE HUMIDITY AT 15 GMT. 55 *** 47 40 39 30 22 26 32 40 36 66 *** NO. OF DAYS MINIMUM TEMPERATURE EQUAL 4 *** 0 0 0 0 0 0 0 0 4 8 *** OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 *** 0 0 0 0 14 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 6 21 31 31 25 10 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 *** 0 0 0 0 7 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. 23 *** 7 0 0 0 0 0 0 0 6 25 *** DATE OF START AND END FREEZING START = 22 NOV. END = 8 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 0.8 7.9 8.8 15.0 21.1 25.4 ***** 27.2 25.0 ***** 10.6 7.5 ****** AVERAGE OF MINIMUM TEMPERATURE IN C. -5.5 1.1 2.5 7.6 13.2 16.8 18.5 18.5 15.9 8.0 2.9 -0.5 8.2 AVERAGE OF MAXIMUM TEMPERATURE IN C. 7.2 14.7 15.0 22.4 28.9 33.9 ***** 36.0 34.1 ***** 18.3 15.5 ****** DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.7 13.6 12.5 14.8 15.7 17.1 ***** 17.5 18.2 ***** 15.4 16.0 ****** AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.73 4.04 4.44 5.49 7.04 7.05 8.06 6.38 5.27 4.41 3.68 3.27 5.15 MEAN OF MIXING RATIO AT 09 GMT. 3.98 4.00 4.12 5.21 6.82 6.27 8.13 7.42 7.01 5.26 4.12 3.92 5.52 MEAN OF MIXING RATIO AT 15 GMT. 3.42 4.22 4.36 4.79 6.52 6.57 8.97 8.81 7.40 5.55 4.74 4.36 5.81 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -13.2 -4.0 -1.8 -0.2 9.4 12.4 15.2 15.0 13.0 3.6 -3.0 -4.8 -13.2 DAY 15 6 9 6 12 7 17 4 29 20 19 13 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 15.5 21.5 23.5 27.5 35.5 37.5 ***** 40.0 37.6 ***** 25.5 19.5 ****** DAY 30 9 31 23 27 3 ** 25 11 ** 3 26 24 HOUR MAXIMUM PRECIPITATION IN MM. 10.5 12.8 19.0 11.0 7.0 0.0 0.0 0.0 0.0 0.0 1.5 9.5 19.0 DAY 12 5 4 15 12 ** ** ** ** ** 28 23 MONTHLY TOTAL PRECIPITATION IN MM. 35.5 48.8 71.0 17.5 11.8 0.0 0.0 0.0 0.0 0.0 1.5 14.0 200.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 77.6 14.6 0.0 7.7 NO. OF DAYS WITH PRECIPITATION. 6 9 11 4 3 0 0 0 0 0 1 3 37 NO. OF DAYS PRECIPITATION EQUAL 6 9 11 3 2 0 0 0 0 0 1 2 34 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. 81 76 74 65 57 42 45 38 38 52 62 71 58 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 63 37 39 29 26 17 21 17 18 21 28 31 29 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 73 52 48 34 32 21 28 27 29 37 52 55 41 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 17 1 0 0 0 0 0 0 0 0 0 4 22 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 3 3 0 0 0 0 7 OR MORE THAN 21 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 2 0 0 0 0 0 *** 0 0 *** 0 0 *** OR LESS THAN 0 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 12 30 *** 31 30 *** 0 0 *** OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 *** 1 0 *** 0 0 *** OR MORE THAN 40 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 *** 0 0 *** 0 0 *** OR MORE THAN 45 NUMBER OF FREEZING DAYS. 28 12 6 1 0 0 0 0 0 0 5 18 70 DATE OF START AND END FREEZING START = 13 NOV. END = 6 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 5.9 5.9 8.1 14.8 20.2 25.9 30.9 28.4 24.1 19.4 10.6 5.6 16.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.4 -2.6 0.7 7.0 12.0 17.3 22.0 18.6 14.3 10.3 3.6 -1.8 8.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.2 14.4 15.5 22.5 28.4 34.5 39.8 38.2 33.8 28.4 17.6 13.1 24.9 DIFFERENCE BETWEEN AVERAGE MAXIMUM 14.6 17.0 14.8 15.5 16.4 17.2 17.8 19.6 19.5 18.1 14.0 14.9 16.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.88 2.49 3.90 5.09 6.80 8.02 8.24 6.63 5.68 5.75 5.35 3.56 5.37 MEAN OF MIXING RATIO AT 09 GMT. 3.05 2.30 3.92 5.57 6.75 7.80 8.26 6.87 6.69 6.54 4.93 3.51 5.52 MEAN OF MIXING RATIO AT 15 GMT. 3.42 2.55 3.77 5.61 7.02 8.35 10.29 7.63 5.60 7.14 4.55 3.98 5.83 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -5.2 -10.8 -5.4 -2.8 5.0 12.8 17.0 14.0 11.2 6.5 -2.4 -9.0 -10.8 DAY 20 8 9 12 6 1 1 30 10 28 26 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 20.0 23.0 29.0 35.0 37.5 42.0 41.0 37.5 33.0 22.5 18.0 42.0 DAY 9 18 3 27 28 16 14 15 1 4 1 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 4.0 0.0 12.0 11.0 4.0 5.0 0.0 0.0 0.0 1.5 6.5 17.0 17.0 DAY 17 ** 25 5 20 1 ** ** ** 21 9 21 MONTHLY TOTAL PRECIPITATION IN MM. 9.1 0.0 39.3 31.6 12.5 13.5 0.0 0.0 0.0 2.5 23.1 36.5 168.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 28.8 34.3 0.0 36.9 NO. OF DAYS WITH PRECIPITATION. 3 0 7 7 6 4 0 0 0 2 7 4 40 NO. OF DAYS PRECIPITATION EQUAL 3 0 6 6 6 4 0 0 0 2 6 4 37 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 0 0 2 1 0 0 0 0 0 0 0 2 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 67 62 76 65 61 49 39 39 45 60 87 85 61 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 32 22 36 32 27 22 17 15 19 25 37 35 27 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 50 32 42 41 37 29 25 21 22 43 50 63 38 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 4 12 2 0 0 0 0 0 0 0 0 7 25 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 22 1 0 0 0 0 23 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 9 30 31 31 29 10 0 0 140 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 22 4 0 0 0 0 26 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 22 15 1 0 0 0 0 0 0 3 24 91 DATE OF START AND END FREEZING START = 25 NOV. END = 12 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 3.8 7.1 11.2 16.6 20.9 25.9 29.1 28.2 24.7 18.1 13.7 10.2 17.5 AVERAGE OF MINIMUM TEMPERATURE IN C. -3.1 0.4 4.0 8.5 12.8 17.0 20.7 19.6 15.2 8.7 4.3 1.3 9.1 AVERAGE OF MAXIMUM TEMPERATURE IN C. 10.8 13.6 17.7 24.8 29.1 34.8 37.5 36.9 34.2 27.5 23.1 19.1 25.8 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.9 13.2 13.7 16.3 16.3 17.8 16.8 17.3 19.0 18.8 18.8 17.8 16.6 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.05 3.77 4.81 5.41 6.71 7.63 8.97 8.62 6.97 5.21 3.90 3.83 5.74 MEAN OF MIXING RATIO AT 09 GMT. 3.40 3.86 4.79 5.33 7.17 7.85 9.39 9.87 8.40 6.51 5.26 6.43 6.52 MEAN OF MIXING RATIO AT 15 GMT. 3.64 4.40 7.00 9.35 9.92 12.45 10.36 12.18 9.53 7.78 6.61 6.52 8.31 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -8.0 -5.4 -2.4 3.0 5.2 13.4 16.2 17.0 12.0 5.0 1.2 -2.8 -8.0 DAY 15 18 4 25 3 30 21 10 19 26 26 23 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 14.5 20.0 25.0 31.5 33.5 37.2 42.5 40.5 37.0 34.0 25.5 22.5 42.5 DAY 26 7 28 16 11 29 11 22 5 1 2 19 24 HOUR MAXIMUM PRECIPITATION IN MM. 11.5 21.6 21.6 0.5 10.3 0.0 0.0 1.0 0.0 7.2 0.0 3.0 21.6 DAY 5 10 18 5 14 ** ** 8 ** 11 ** 4 MONTHLY TOTAL PRECIPITATION IN MM. 20.2 42.5 46.3 0.9 20.0 0.0 0.0 1.0 0.0 11.2 0.0 5.5 147.6 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 73.8 14.2 0.7 11.3 NO. OF DAYS WITH PRECIPITATION. 5 5 3 2 2 0 0 1 0 2 0 3 23 NO. OF DAYS PRECIPITATION EQUAL 4 3 3 0 2 0 0 1 0 2 0 3 18 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 2 3 0 1 0 0 0 0 0 0 0 7 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 80 75 76 63 58 46 46 48 52 61 61 72 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 40 37 35 25 27 21 22 23 22 27 26 42 29 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 62 57 66 56 46 39 29 37 35 51 57 69 50 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 10 3 0 0 0 0 0 0 0 0 0 0 13 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 12 7 0 0 0 0 19 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 17 30 29 31 29 8 0 0 147 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 8 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. 26 17 4 0 0 0 0 0 0 0 0 14 61 DATE OF START AND END FREEZING START = 5 DEC. END = 5 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 5.3 8.9 10.0 16.3 22.5 27.4 28.6 26.4 25.5 19.7 10.4 5.6 17.2 AVERAGE OF MINIMUM TEMPERATURE IN C. -1.1 0.8 3.3 8.0 13.4 17.9 20.0 16.2 15.3 9.6 3.4 -1.8 8.7 AVERAGE OF MAXIMUM TEMPERATURE IN C. 11.7 16.9 16.7 24.7 31.6 37.0 37.3 36.6 35.7 29.7 17.4 13.0 25.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 12.8 16.1 13.4 16.7 18.2 19.1 17.3 20.4 20.4 20.1 14.0 14.8 16.9 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 3.73 3.78 5.00 5.40 5.68 5.76 8.48 10.30 5.54 5.10 5.30 3.33 5.62 MEAN OF MIXING RATIO AT 09 GMT. 4.93 5.57 6.42 5.34 5.53 5.67 8.06 7.14 6.00 5.25 5.70 4.05 5.81 MEAN OF MIXING RATIO AT 15 GMT. 5.21 5.72 6.14 5.09 6.34 5.99 8.74 8.17 6.84 5.91 6.31 4.72 6.26 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -6.4 -5.0 -2.4 3.6 9.6 15.0 15.6 9.0 10.4 4.6 -2.2 -8.8 -8.8 DAY 4 25 19 11 22 7 29 29 28 6 30 24 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 18.5 21.0 24.0 29.0 36.0 41.0 41.5 39.0 38.5 32.2 22.5 18.0 41.5 DAY 31 27 31 24 31 28 5 30 2 5 1 3 24 HOUR MAXIMUM PRECIPITATION IN MM. 12.5 14.0 17.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 5.0 17.0 DAY 25 6 2 ** ** ** ** ** ** ** 8 12 MONTHLY TOTAL PRECIPITATION IN MM. 23.9 19.5 58.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.0 5.0 111.1 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 91.9 0.0 0.0 8.1 NO. OF DAYS WITH PRECIPITATION. 9 4 7 0 0 0 0 0 0 0 2 1 23 NO. OF DAYS PRECIPITATION EQUAL 5 3 7 0 0 0 0 0 0 0 2 1 18 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 3 0 0 0 0 0 0 0 0 0 5 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 81 74 84 65 46 33 45 59 42 54 88 78 62 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 54 44 51 27 18 13 19 17 16 19 45 43 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 78 63 62 31 25 17 25 24 25 33 70 72 44 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 4 1 0 0 0 0 0 0 0 0 0 6 11 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 13 1 0 0 0 0 15 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 24 30 31 31 30 20 0 0 166 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 2 8 0 0 0 0 0 10 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. 21 11 4 0 0 0 0 0 0 0 3 23 62 DATE OF START AND END FREEZING START = 25 NOV. END = 19 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 5.3 6.6 10.1 19.8 25.0 27.0 29.5 28.2 25.8 18.8 10.4 5.3 17.6 AVERAGE OF MINIMUM TEMPERATURE IN C. -2.7 -1.0 2.9 11.3 16.4 19.1 21.0 19.3 16.7 10.0 3.1 -0.6 9.6 AVERAGE OF MAXIMUM TEMPERATURE IN C. 13.4 14.2 17.3 28.2 33.6 35.0 38.1 37.1 34.9 27.6 17.7 11.2 25.7 DIFFERENCE BETWEEN AVERAGE MAXIMUM 16.1 15.2 14.4 16.9 17.2 15.9 17.1 17.8 18.2 17.6 14.6 11.8 16.1 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.89 3.40 3.95 5.74 5.98 7.40 8.98 8.23 7.11 6.22 4.11 3.59 5.63 MEAN OF MIXING RATIO AT 09 GMT. 3.19 4.08 4.32 5.40 6.19 7.95 8.84 8.10 7.18 7.17 5.40 4.01 5.99 MEAN OF MIXING RATIO AT 15 GMT. 3.78 4.20 4.20 5.78 6.83 8.11 9.40 10.00 8.60 8.35 5.73 4.34 6.61 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -9.0 -4.8 -2.5 6.0 10.0 15.6 17.0 16.6 13.2 8.2 -1.4 -5.4 -9.0 DAY 15 23 2 2 12 25 25 23 21 15 29 17 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 20.0 18.2 21.2 32.0 38.0 38.8 41.0 39.2 37.2 33.6 25.6 15.0 41.0 DAY 1 11 19 30 31 11 10 27 11 1 2 2 24 HOUR MAXIMUM PRECIPITATION IN MM. 16.0 1.0 6.0 0.0 0.0 0.0 0.0 0.0 0.0 6.0 4.0 11.8 16.0 DAY 29 14 25 ** ** ** ** ** ** 16 5 15 MONTHLY TOTAL PRECIPITATION IN MM. 26.0 1.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0 22.5 17.5 31.0 108.0 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 34.3 0.0 0.0 65.7 NO. OF DAYS WITH PRECIPITATION. 2 1 4 0 0 0 0 0 0 7 7 5 26 NO. OF DAYS PRECIPITATION EQUAL 2 1 4 0 0 0 0 0 0 6 7 5 25 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 2 0 0 0 0 0 0 0 0 0 0 1 3 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 73 74 68 55 43 44 45 47 49 66 70 77 59 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 37 38 32 21 18 22 20 19 18 28 40 47 28 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 51 56 37 27 26 26 25 29 30 52 59 60 40 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 14 2 0 0 0 0 0 0 0 0 0 4 20 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 2 5 17 8 1 0 0 0 33 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 10 31 29 31 31 30 2 0 0 164 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. 22 19 7 0 0 0 0 0 0 0 5 20 73 DATE OF START AND END FREEZING START = 14 NOV. END = 11 MAR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 2.3 5.0 9.3 14.7 20.1 25.2 27.9 26.4 21.9 15.6 9.4 4.4 15.2 SD OF MEAN DAILY TEMPERATURE IN C. 2.92 2.44 1.91 1.70 1.58 1.06 1.44 1.45 1.95 2.02 2.05 2.47 1.92 AVERAGE OF MINIMUM TEMPERATURE IN C. -4.6 -2.1 2.3 7.1 12.1 16.6 19.3 17.7 12.8 7.2 2.0 -2.7 7.3 AVERAGE OF MAXIMUM TEMPERATURE IN C. 9.2 12.0 16.3 22.2 28.2 33.8 36.5 35.1 31.1 24.1 16.9 11.4 23.1 DIFFERENCE BETWEEN AVERAGE MAXIMUM 13.7 14.1 14.0 15.1 16.1 17.2 17.2 17.4 18.3 16.9 14.9 14.1 15.8 AND MINIMUM TEMPERATURE. MEAN OF MIXING RATIO AT 03 GMT. 2.76 3.29 4.25 5.13 6.01 6.34 7.09 6.71 5.50 4.77 4.23 3.14 4.93 MEAN OF MIXING RATIO AT 09 GMT. 3.95 4.04 4.56 5.26 5.82 5.92 6.83 7.00 6.09 5.58 4.96 4.30 5.35 MEAN OF MIXING RATIO AT 15 GMT. 3.83 3.97 4.61 5.32 5.97 6.37 7.33 7.39 6.23 5.62 4.90 4.18 5.47 ABSOLUTE OF MINIMUM TEMPERATURE IN C. -18.5 -17.0 -10.5 -6.0 1.0 6.5 12.0 9.0 3.0 -3.0 -9.0 -16.0 -18.5 YEAR - DAY 64-20 74- 5 76- 4 65-10 94- 6 61- 3 78-10 99-29 62-29 84-23 64-29 72-26 64-20 ABSOLUTE OF MAXIMUM TEMPERATURE IN C. 21.0 22.0 28.0 34.0 38.0 41.0 42.5 41.0 38.5 34.0 26.0 22.5 42.5 YEAR - DAY 94- 1 62-18 62-23 92-17 0-31 99-28 98-11 94- 6 99- 2 98- 1 83- 1 98-19 98-11 24 HOUR MAXIMUM PRECIPITATION IN MM. 29.5 49.0 27.0 42.5 31.0 10.0 7.0 1.0 3.0 39.0 44.0 52.5 52.5 YEAR - DAY 61-21 66- 9 87-30 62-21 92- 6 95- 2 87-27 98- 8 72-10 76-30 93-12 89- 4 89- 4 MONTHLY TOTAL PRECIPITATION IN MM. 25.5 21.6 30.2 18.1 10.8 1.7 0.5 0.0 0.2 6.4 12.3 23.6 150.9 ---------------- ---------------- ---------------- ---------------- SEASONAL PERCENT OF PRECIPITATION 51.4 20.2 0.4 28.0 NO. OF DAYS WITH PRECIPITATION. 4 3 4 4 3 0 0 0 0 2 3 4 27 NO. OF DAYS PRECIPITATION EQUAL 4 3 4 3 2 0 0 0 0 1 2 4 23 OR MORE THAN 1 MM. NO. OF DAYS PRECIPITATION EQUAL 1 1 1 0 0 0 0 0 0 0 0 1 4 OR MORE THAN10 MM. MEAN OF RELATIVE HUMIDITY AT 03 GMT. 72 73 71 60 50 38 36 38 44 57 72 72 57 MEAN OF RELATIVE HUMIDITY AT 09 GMT. 52 44 38 30 23 17 17 18 20 27 38 48 31 MEAN OF RELATIVE HUMIDITY AT 15 GMT. 64 56 48 38 30 21 21 23 26 38 52 61 40 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 18 9 1 0 0 0 0 0 0 0 2 11 41 OR LESS THAN -4 NO. OF DAYS MINIMUM TEMPERATURE EQUAL 0 0 0 0 0 1 9 3 0 0 0 0 13 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 1 11 27 31 31 20 2 0 0 123 OR MORE THAN 30 NO. OF DAYS MAXIMUM TEMPERATURE EQUAL 0 0 0 0 0 0 2 1 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 8 1 0 0 0 0 0 0 7 24 88 DATE OF START AND END FREEZING START = 21 OCT. END = 15 APR. IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) STATION NAJAFABAD LATITUDE 32 38 N DATA PROCESSING CENTER LONGITUDE 51 22 E ELEVATION 1649 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. 2.6 5.3 9.7 15.3 21.2 27.0 29.6 28.1 23.3 16.3 9.8 4.7 16.1 AVERAGE DEW POINT TEMPERATURE. IN C. -4.5 -3.4 -0.9 1.3 3.1 3.7 5.6 5.6 3.3 1.7 -0.2 -3.1 1.0 AVERAGE OF MIXING RATIO IN G/KG 3.51 3.77 4.47 5.23 5.93 6.21 7.08 7.03 5.93 5.32 4.69 3.87 5.25 AVERAGE OF VAPOUR PRESSURE HPA 4.65 5.00 5.94 6.97 7.92 8.31 9.48 9.41 7.94 7.09 6.23 5.13 7.01 AVERAGE OF SATURATION DEFICIT IN HPA 3.34 4.60 6.90 11.67 18.89 29.27 34.03 30.66 22.91 13.08 6.82 4.07 15.52 AVERAGE RELATIVE HUMIDITY IN PERCENT 63 58 52 43 34 25 24 26 30 41 54 60 43 AVERAGE OF MAXIMUM RELATIVE HUMIDITY(%) 78 75 71 61 50 38 36 39 44 58 73 76 58 AVERAGE OF MINIMUM RELATIVE HUMIDITY(%) 48 42 36 29 22 16 16 18 19 27 38 45 30 NO. OF DAYS PRECIPITATION EQUAL 2 1 2 2 1 0 0 0 0 0 1 2 11 OR MORE THAN 5 MM.