IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 1 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. AVERAGE OF MEAN DAILY TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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AVERAGE OF MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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AVERAGE OF MAXIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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MONTHLY MEAN OF MIXING RATIO AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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MONTHLY MEAN OF MIXING RATIO AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 ****** ****** ****** ****** ****** ****** ****** ****** 7.59 4.88 5.20 4.75 ****** 1956 4.04 5.25 4.93 6.79 7.34 11.09 13.44 14.23 11.75 6.53 5.68 4.48 7.96 1957 3.00 4.10 6.90 8.46 11.37 13.98 12.27 10.74 7.47 10.15 8.04 5.76 8.52 1958 5.09 5.05 6.12 9.55 13.61 12.92 16.16 14.95 11.74 9.85 5.51 5.09 9.64 1959 4.93 4.75 6.17 7.19 10.33 12.73 17.34 15.93 12.41 8.69 4.49 4.45 9.12 1960 5.70 5.78 5.68 7.22 9.16 8.68 8.91 9.70 8.18 7.34 6.34 5.72 7.37 1961 5.37 5.42 4.83 7.47 10.22 14.62 15.13 9.29 7.80 7.95 6.25 6.07 8.37 1962 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1963 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1964 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1965 ****** ****** ****** ****** ****** ****** ****** 11.15 7.96 8.71 6.22 4.51 ****** 1966 6.83 6.13 6.80 7.91 11.44 14.09 19.40 ****** 9.90 8.42 4.32 3.59 ****** 1967 4.19 4.51 3.51 3.93 6.03 4.27 5.83 4.62 5.24 5.47 5.38 4.26 4.77 1968 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1969 4.13 4.43 5.32 4.99 6.19 5.72 4.72 5.83 4.64 5.41 4.60 3.98 5.00 1970 3.79 3.77 3.89 4.49 4.49 4.67 6.50 5.53 5.36 3.83 3.93 4.06 4.53 1971 ****** 4.91 4.64 4.43 4.90 4.68 5.01 5.37 4.41 3.92 4.97 4.21 ****** 1972 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1973 3.45 4.53 4.42 4.26 4.55 5.33 6.77 6.55 5.70 4.69 3.62 4.11 4.83 1974 3.02 3.46 5.63 4.59 7.39 9.75 11.07 9.88 8.80 9.17 7.71 4.59 7.09 1975 4.66 4.47 6.87 8.54 12.07 16.65 10.51 9.80 7.52 5.22 4.77 4.45 7.96 1976 4.70 4.30 4.39 4.99 4.80 4.37 5.34 5.09 6.17 6.10 4.92 4.90 5.01 1977 3.53 3.90 4.70 4.89 6.81 9.75 8.46 10.55 11.71 9.19 7.59 5.14 7.18 1978 4.35 5.32 5.64 6.11 8.43 8.51 10.81 11.69 10.42 7.34 4.71 4.97 7.36 1979 4.47 4.87 5.00 5.81 8.27 9.63 12.45 ****** 8.92 7.91 6.18 4.35 ****** 1980 4.40 4.33 6.15 8.62 10.67 12.85 16.04 15.23 12.50 8.31 6.85 5.42 9.28 1981 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 4.60 4.59 6.88 8.31 9.35 12.61 10.72 ****** 7.68 7.42 6.65 5.01 ****** MEAN 4.44 4.70 5.43 6.43 8.38 9.85 10.85 9.79 8.36 7.12 5.64 4.73 7.14 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 7 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. MONTHLY MEAN OF MIXING RATIO AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 ****** ****** ****** ****** ****** ****** ****** ****** 6.31 5.16 5.10 4.90 ****** 1956 3.72 4.81 4.85 6.87 7.15 11.52 12.44 12.30 10.37 5.93 5.45 4.16 7.46 1957 2.55 2.84 6.13 6.42 8.15 9.59 9.83 9.36 9.91 8.96 7.18 5.26 7.18 1958 4.60 4.62 5.30 7.61 10.93 11.12 11.09 8.73 8.50 8.36 5.07 4.69 7.55 1959 4.29 4.01 5.14 5.95 6.55 10.58 12.93 12.07 9.63 8.22 4.26 3.64 7.27 1960 5.52 5.97 5.23 5.98 5.93 7.48 7.90 6.68 7.16 4.68 5.41 5.21 6.10 1961 3.87 4.46 4.89 5.96 6.10 9.01 8.58 9.17 7.69 5.51 5.87 5.67 6.40 1962 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1963 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1964 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1965 ****** ****** ****** ****** ****** ****** ****** 9.11 7.62 8.42 5.70 4.26 ****** 1966 5.98 5.10 5.94 7.60 9.10 11.11 15.22 ****** 6.84 6.76 4.33 3.21 ****** 1967 3.32 3.21 3.41 3.60 5.43 3.74 4.45 3.22 5.38 5.37 4.96 3.55 4.14 1968 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1969 3.48 3.52 4.94 4.58 5.52 5.25 4.36 5.17 4.98 4.88 4.44 4.13 4.60 1970 3.64 3.79 4.08 4.20 4.22 4.13 5.53 4.92 4.90 3.80 4.09 3.44 4.23 1971 ****** 3.67 4.43 4.52 4.63 4.35 4.99 4.94 4.35 3.94 4.66 3.84 ****** 1972 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1973 2.82 4.56 4.37 4.24 4.70 5.67 6.19 6.05 5.17 4.45 3.83 4.22 4.69 1974 2.41 3.12 5.41 4.46 6.70 8.49 9.62 8.90 8.07 7.66 7.39 4.27 6.37 1975 4.19 4.02 6.31 7.65 10.06 12.58 8.32 8.45 6.73 4.69 4.73 4.27 6.83 1976 4.52 4.13 4.18 4.60 4.46 4.11 4.69 4.69 5.68 5.56 4.84 4.83 4.69 1977 2.65 3.64 4.59 4.84 6.09 9.30 8.15 10.37 11.88 9.00 7.26 5.02 6.90 1978 4.61 5.26 5.50 5.97 7.85 8.76 9.14 10.67 10.21 7.30 4.55 4.97 7.07 1979 4.43 4.71 5.00 5.71 8.53 10.09 10.84 ****** 9.09 8.15 6.01 4.52 ****** 1980 3.96 4.35 5.15 6.31 7.90 9.63 10.79 10.06 8.53 6.47 6.21 4.67 7.00 1981 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 3.39 4.18 5.69 7.23 8.52 10.01 8.62 ****** 5.79 5.51 5.22 4.02 ****** MEAN 3.90 4.20 5.03 5.72 6.93 8.33 8.69 8.05 7.50 6.31 5.30 4.40 6.19 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 8 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 5.0 13 0.0 24 -3.0 25 -7.5 20 ***** 1956 -18.0 19 -9.0 12 -9.0 25 -8.0 1 0.0 8 4.0 4 11.0 10 8.0 12 0.0 24 -3.0 30 -4.0 5 -13.0 26 -18.0 1957 -20.0 25 -28.0 9 -1.0 1 0.0 6 4.0 2 4.0 8 10.0 5 9.0 29 5.0 29 1.0 14 -5.0 25 -10.0 28 -28.0 1958 -9.0 1 -18.0 2 -4.0 1 -2.0 13 1.0 2 6.0 25 8.0 11 10.0 9 5.0 25 1.0 10 -12.0 24 -8.0 1 -18.0 1959 -9.0 3 -12.0 17 -10.0 9 0.0 1 3.0 12 5.0 5 7.0 19 7.0 26 2.0 23 1.0 8 -24.0 29 -17.0 2 -24.0 1960 -7.0 5 -9.0 1 -19.0 14 0.0 1 2.0 1 6.0 1 10.0 13 5.0 28 3.0 28 -2.0 25 -5.0 22 -8.0 20 -19.0 1961 -11.0 10 -19.0 5 -8.0 12 -1.0 17 4.0 1 6.0 1 12.0 3 9.0 31 3.0 30 0.0 14 -10.0 27 -7.0 1 -19.0 1962 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1963 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1964 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1965 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** -2.0 22 -13.0 30 -21.0 23 ***** 1966 -15.0 16 -12.0 5 -12.0 24 -6.0 5 0.0 7 10.0 1 12.0 8 ***** ** 9.0 10 4.0 23 -4.0 30 -5.0 14 ***** 1967 ***** ** ***** ** ***** ** ***** ** 6.0 1 ***** ** ***** ** 11.0 9 10.0 8 5.0 13 -4.0 28 -14.0 25 ***** 1968 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1969 ***** ** ***** ** ***** ** ***** ** ***** ** 13.0 1 16.0 4 14.0 29 ***** ** ***** ** ***** ** ***** ** ***** 1970 -10.5 29 -5.0 8 -2.0 4 4.0 24 8.5 8 13.0 11 19.0 25 16.0 28 12.0 17 7.5 27 -1.0 30 -11.0 17 -11.0 1971 ***** ** ***** ** -7.0 16 -1.0 2 8.0 1 15.0 4 15.0 31 11.5 1 8.0 21 4.0 26 0.5 13 -14.0 21 ***** 1972 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1973 -18.0 1 -9.0 6 -8.0 9 -1.0 10 3.0 1 3.0 9 9.0 1 9.0 26 4.0 22 3.0 18 -8.0 29 -12.0 13 -18.0 1974 -19.0 30 -26.0 6 -8.0 2 -2.5 1 3.5 19 5.0 3 6.0 8 6.0 12 5.0 5 -1.0 19 -5.0 30 -14.0 29 -26.0 1975 -13.5 29 -20.0 13 -6.5 8 -1.5 4 2.0 7 7.0 15 9.5 3 9.0 25 6.0 24 0.0 8 -7.0 30 -12.0 8 -20.0 1976 -9.5 2 -17.0 29 -19.0 1 0.0 5 3.5 3 10.5 30 8.5 4 11.0 18 8.0 29 3.0 24 -5.0 30 -5.0 1 -19.0 1977 -19.0 25 -16.0 2 -5.0 4 1.5 1 6.0 11 10.0 4 12.0 2 11.0 19 8.0 19 1.0 23 -2.0 14 -7.0 30 -19.0 1978 -9.0 16 -5.5 13 -3.5 15 0.0 1 3.5 2 6.5 4 11.0 2 10.5 21 8.0 26 5.0 13 -7.0 20 -3.5 18 -9.0 1979 -9.5 13 -3.0 5 -6.5 6 -0.5 29 5.0 1 10.5 1 13.5 9 ***** ** 10.5 22 3.0 30 -3.0 26 -9.0 24 ***** 1980 -13.0 9 -11.5 1 -8.0 5 -2.0 18 4.5 6 10.5 9 16.5 2 14.0 17 5.5 23 2.0 31 -3.0 30 -10.0 14 -13.0 1981 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1982 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1983 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1984 -19.5 18 -11.0 1 -5.0 17 1.0 4 -1.5 2 7.2 1 16.0 26 ***** ** 9.5 21 0.0 20 -4.0 28 -3.5 23 ***** LOW. -20.0 25 -28.0 9 -19.0 14 -8.0 1 -1.5 2 3.0 9 6.0 8 5.0 28 0.0 24 -3.0 30 -24.0 29 -21.0 23 -28.0 YEAR 57 57 60 56 84 73 74 60 56 56 59 65 57 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 9 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 34.0 14 30.0 1 22.0 1 15.0 1 ***** 1956 10.0 11 16.0 27 19.0 15 24.0 25 33.0 31 38.0 30 39.0 1 39.0 5 35.6 2 28.0 2 23.0 6 16.0 4 39.0 1957 5.0 6 9.0 28 18.0 6 24.0 15 27.0 31 34.0 22 40.0 29 38.0 7 34.0 8 29.0 1 18.0 1 13.0 3 40.0 1958 14.0 13 15.0 24 21.0 21 30.0 28 32.0 16 36.0 28 39.0 30 39.0 1 36.0 14 30.0 2 21.0 1 13.0 5 39.0 1959 13.0 30 14.0 1 24.0 16 28.0 27 32.0 28 38.0 21 39.0 7 40.0 13 37.0 1 34.0 1 23.0 12 13.0 24 40.0 1960 16.0 19 19.0 15 18.0 31 23.0 7 30.0 30 40.0 27 40.0 17 39.0 1 36.0 3 29.0 12 23.0 1 13.0 13 40.0 1961 9.0 20 11.0 23 20.0 25 26.0 27 30.0 18 38.0 30 40.0 23 38.0 1 32.0 1 30.0 3 21.0 1 13.0 3 40.0 1962 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1963 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1964 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1965 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 38.0 4 33.0 4 27.0 16 17.0 16 14.0 2 ***** 1966 16.0 3 15.0 16 17.0 10 24.0 27 28.0 21 34.0 13 36.0 12 ***** ** 34.0 1 25.0 6 22.0 17 20.0 5 ***** 1967 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1968 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1969 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1970 9.5 1 14.0 19 20.0 31 26.0 16 30.0 23 36.0 29 36.0 30 37.0 14 33.0 28 31.0 1 21.0 1 12.0 5 37.0 1971 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1972 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1973 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1974 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1975 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1976 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1977 ***** ** ***** ** 20.0 20 23.0 30 28.0 13 34.5 11 38.0 29 39.0 2 33.0 13 30.0 1 20.0 4 17.0 4 ***** 1978 13.5 3 17.5 16 21.5 29 25.0 10 30.0 26 36.0 30 39.0 17 38.0 12 34.0 14 29.0 10 21.0 1 18.5 25 39.0 1979 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1980 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1981 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1982 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1983 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1984 9.0 3 15.0 12 25.4 10 25.5 15 28.0 26 38.0 14 39.0 30 ***** ** 39.0 4 33.5 2 18.0 6 10.5 31 ***** HIG. 16.0 19 19.0 15 25.4 10 30.0 28 33.0 31 40.0 27 40.0 29 40.0 13 39.0 4 34.0 1 23.0 6 20.0 5 40.0 YEAR 60 60 84 58 56 60 57 59 84 59 56 66 57 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 10 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 0.0 ** 0.0 ** 30.0 23 92.0 25 ***** 1956 33.0 13 17.8 7 7.0 28 7.0 12 0.0 ** 0.0 ** 0.0 ** 0.0 ** 5.0 3 0.0 ** 15.0 10 44.0 18 44.0 1957 19.5 30 24.0 27 34.5 14 29.2 28 11.3 7 0.0 ** 0.0 ** 0.0 ** 0.0 ** 27.0 18 28.2 18 11.3 20 34.5 1958 16.5 30 22.2 23 13.0 22 19.2 5 18.0 31 5.0 1 0.0 ** 0.0 ** 0.0 ** 5.0 29 4.0 7 40.0 1 40.0 1959 7.0 20 9.2 8 14.0 23 48.0 6 14.0 9 0.0 ** 0.0 ** 0.0 ** 0.0 ** 12.0 23 40.0 25 4.0 22 48.0 1960 34.0 7 4.6 5 24.0 13 38.4 28 4.2 8 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 19.0 28 18.0 20 38.4 1961 15.4 21 12.0 2 15.0 12 57.0 30 3.0 12 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 7.0 6 24.0 14 57.0 1962 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1963 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1964 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1965 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** 0.0 ** 0.0 ** 9.0 7 21.5 8 0.0 ** ***** 1966 15.0 31 33.0 2 18.0 14 14.0 22 18.0 4 0.0 ** 0.0 ** ***** ** 0.0 ** 13.0 24 0.0 ** 15.0 13 ***** 1967 1.0 4 20.5 12 2.5 5 19.0 5 28.0 18 0.0 ** 0.0 ** 0.0 ** 0.0 ** 7.0 13 21.0 25 8.0 7 28.0 1968 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1969 89.0 20 22.5 20 38.0 20 27.6 11 27.4 6 0.0 ** 0.0 ** 0.0 ** 0.0 ** 7.0 30 29.5 2 11.0 14 89.0 1970 7.8 27 20.8 6 17.4 11 49.4 29 9.0 5 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 14 9.0 28 45.0 13 49.4 1971 ***** ** 12.0 13 48.0 15 38.0 2 6.0 6 0.0 ** 9.0 30 14.0 2 0.0 ** 16.0 25 24.0 19 20.0 6 ***** 1972 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1973 8.5 31 14.0 22 6.0 16 23.0 16 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 1.5 24 15.4 19 23.0 1974 35.2 15 17.5 28 10.5 1 15.0 11 4.5 4 0.0 ** 2.0 15 0.0 ** 0.0 ** 0.0 ** 5.5 21 15.0 21 35.2 1975 19.5 3 14.3 24 21.2 18 17.6 27 26.2 12 0.0 ** 0.0 ** 0.0 ** 0.0 ** 2.0 1 23.0 11 16.8 28 26.2 1976 23.5 29 8.0 24 20.0 31 12.3 4 14.1 20 0.0 ** 0.0 ** 0.0 ** 8.0 24 4.0 15 14.0 1 9.0 7 23.5 1977 27.0 29 13.5 7 29.0 4 33.0 25 13.0 24 1.0 1 0.0 ** 0.0 ** 0.0 ** 21.0 26 15.0 13 29.0 14 33.0 1978 18.0 4 18.0 25 17.0 6 5.0 25 7.0 1 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 3.0 17 25.0 12 25.0 1979 17.0 24 17.0 8 16.0 27 25.0 23 28.0 9 4.0 4 0.0 ** ***** ** 0.0 ** 0.0 ** 14.0 29 13.0 7 ***** 1980 19.0 22 24.0 25 22.0 2 11.0 2 17.0 5 0.0 ** 0.0 ** 0.0 ** 0.0 ** 0.0 ** 16.0 7 21.0 21 24.0 1981 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1982 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1983 ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** ** ***** 1984 45.0 13 14.5 23 15.0 25 16.0 23 8.0 5 0.0 ** 0.0 ** ***** ** 0.0 ** 8.0 31 11.0 1 6.1 24 ***** HIG. 89.0 20 33.0 2 48.0 15 57.0 30 28.0 18 5.0 1 9.0 30 14.0 2 8.0 24 27.0 18 40.0 25 92.0 25 92.0 YEAR 69 66 71 61 67 58 71 71 76 57 59 55 55 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 11 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. MONTHLY TOTAL PRECIPITATION WITH SEASONAL PERCENT. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL SEASONAL-PERCENT ----------------------- 1955 ****** ****** ****** ****** ****** ****** ****** ****** 0.0 0.0 100.5 178.0 ****** ***** ***** 0.0 100.0 1956 67.0 37.9 51.2 36.9 0.0 0.0 0.0 0.0 5.0 0.0 21.5 95.5 315.0 49.6 11.7 1.6 37.1 1957 81.4 67.0 105.7 104.3 55.5 0.0 0.0 0.0 0.0 69.8 114.6 25.7 624.0 40.7 25.6 0.0 33.7 1958 67.7 22.2 49.9 34.3 43.0 9.3 0.0 0.0 0.0 5.4 6.6 88.4 326.8 42.8 26.5 0.0 30.7 1959 9.8 30.6 51.4 67.6 29.0 0.0 0.0 0.0 0.0 12.0 40.0 4.4 244.8 37.5 39.5 0.0 23.0 1960 38.0 7.2 82.0 112.6 6.4 0.0 0.0 0.0 0.0 0.0 56.6 30.0 332.8 38.2 35.8 0.0 26.0 1961 63.4 38.2 49.4 131.6 5.0 0.0 0.0 0.0 0.0 0.0 14.0 60.0 361.6 41.8 37.8 0.0 20.5 1962 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1963 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1964 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1965 ****** ****** ****** ****** ****** ****** ****** 0.0 0.0 9.0 29.0 0.0 ****** ***** ***** 0.0 100.0 1966 54.0 36.0 59.0 27.0 36.5 0.0 0.0 ****** 0.0 43.0 0.0 28.5 ****** 52.5 22.4 0.0 25.2 1967 2.5 60.5 4.0 23.0 50.5 0.0 0.0 0.0 0.0 11.0 65.0 13.0 229.5 29.2 32.0 0.0 38.8 1968 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1969 222.6 38.5 112.5 107.5 38.4 0.0 0.0 0.0 0.0 24.3 35.3 26.7 605.8 61.7 24.1 0.0 14.2 1970 35.1 23.3 47.4 88.5 28.0 0.0 0.0 0.0 0.0 3.0 15.4 99.9 340.6 31.1 34.2 0.0 34.7 1971 ****** 31.0 135.5 106.0 18.0 0.0 17.0 16.0 0.0 16.0 88.0 41.0 ****** 35.5 26.5 7.0 30.9 1972 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1973 22.5 37.5 12.5 51.5 0.0 0.0 0.0 0.0 0.0 0.0 1.5 33.4 158.9 45.6 32.4 0.0 22.0 1974 115.1 74.5 57.3 20.0 4.5 0.0 2.0 0.0 0.0 0.0 5.5 45.5 324.4 76.1 7.6 0.6 15.7 1975 40.3 46.6 31.2 40.4 35.2 0.0 0.0 0.0 0.0 2.0 68.4 46.1 310.2 38.1 24.4 0.0 37.6 1976 81.4 19.2 61.9 46.4 29.5 0.0 0.0 0.0 8.0 7.6 33.5 29.5 317.0 51.3 23.9 2.5 22.3 1977 44.9 18.2 74.2 57.5 30.0 1.0 0.0 0.0 0.0 70.0 28.0 70.0 393.8 34.9 22.5 0.0 42.7 1978 25.5 39.0 46.5 17.0 12.5 0.0 0.0 0.0 0.0 0.0 7.0 88.5 236.0 47.0 12.5 0.0 40.5 1979 65.0 43.0 56.0 50.0 58.0 5.0 0.0 ****** 0.0 0.0 21.0 68.0 ****** 44.8 30.9 0.0 24.3 1980 85.0 90.0 78.0 38.0 17.0 0.0 0.0 0.0 0.0 0.0 49.0 69.0 426.0 59.4 12.9 0.0 27.7 1981 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ***** ***** ***** ***** 1984 211.0 20.0 49.0 30.5 35.0 0.0 0.0 ****** 0.0 8.0 62.0 17.7 ****** 64.6 15.1 0.0 20.2 MEAN 70.1 39.0 60.7 59.5 26.6 0.8 1.0 0.9 0.6 12.8 39.2 52.7 363.9 46.7 23.9 0.6 28.8 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 12 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 *** *** *** *** *** *** *** *** 0 0 9 8 *** 1956 4 6 10 8 0 0 0 0 1 0 4 5 38 1957 13 8 8 12 10 0 0 3 0 5 9 5 73 1958 9 1 6 3 4 2 0 0 0 2 3 7 37 1959 3 9 7 5 3 0 0 0 0 1 1 2 31 1960 2 2 13 11 2 0 0 0 0 0 8 2 40 1961 9 6 5 14 2 0 0 0 0 0 3 5 44 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 0 0 1 2 0 *** 1966 7 2 6 4 3 0 0 *** 0 8 0 6 *** 1967 3 7 2 4 5 0 0 0 0 2 8 3 34 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 10 5 12 13 5 2 0 2 0 8 3 5 65 1970 10 2 8 8 5 0 0 0 0 1 2 5 41 1971 *** 6 10 11 6 0 2 2 0 1 13 7 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 5 4 3 4 0 0 0 0 0 2 1 5 24 1974 13 8 10 2 1 0 1 0 0 0 1 7 43 1975 7 6 5 5 4 0 0 0 0 1 7 6 41 1976 7 4 6 10 5 0 0 0 1 3 3 7 46 1977 9 3 6 4 5 1 0 0 0 10 5 7 50 1978 4 6 7 4 3 0 0 0 0 0 3 10 37 1979 8 8 10 6 6 2 0 *** 0 0 2 9 *** 1980 8 8 6 4 1 0 0 0 0 0 5 5 37 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 8 4 7 5 6 0 0 *** 0 1 12 5 *** MEAN 7 5 7 7 4 0 0 0 0 2 5 6 43 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 13 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 *** *** *** *** *** *** *** *** 0 0 9 8 *** 1956 4 6 10 8 0 0 0 0 1 0 3 5 37 1957 12 7 8 12 10 0 0 0 0 5 9 5 68 1958 9 1 6 2 4 2 0 0 0 1 2 7 34 1959 2 8 7 5 3 0 0 0 0 1 1 1 28 1960 2 2 13 11 2 0 0 0 0 0 8 2 40 1961 9 6 5 14 2 0 0 0 0 0 3 5 44 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 0 0 1 2 0 *** 1966 7 2 6 4 3 0 0 *** 0 8 0 4 *** 1967 2 7 2 4 5 0 0 0 0 2 8 3 33 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 10 5 8 12 4 0 0 0 0 7 3 5 54 1970 9 2 6 7 5 0 0 0 0 1 2 5 37 1971 *** 5 10 9 5 0 2 2 0 1 9 6 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 5 4 3 4 0 0 0 0 0 0 1 4 21 1974 13 8 10 2 1 0 1 0 0 0 1 7 43 1975 6 5 5 5 4 0 0 0 0 1 7 6 39 1976 7 4 6 10 5 0 0 0 1 3 3 7 46 1977 8 2 6 4 5 1 0 0 0 10 5 7 48 1978 3 6 7 4 3 0 0 0 0 0 3 10 36 1979 8 8 10 6 6 2 0 *** 0 0 2 9 *** 1980 8 8 6 4 1 0 0 0 0 0 5 5 37 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 8 3 7 5 6 0 0 *** 0 1 12 5 *** MEAN 7 5 7 7 4 0 0 0 0 2 4 5 41 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 14 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 *** *** *** *** *** *** *** *** 0 0 4 5 *** 1956 2 1 0 0 0 0 0 0 0 0 1 4 8 1957 1 3 4 3 1 0 0 0 0 3 4 1 20 1958 3 1 1 2 2 0 0 0 0 0 0 3 12 1959 0 0 3 1 2 0 0 0 0 1 1 0 8 1960 1 0 1 3 0 0 0 0 0 0 2 2 9 1961 2 1 3 3 0 0 0 0 0 0 0 3 12 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 0 0 0 1 0 *** 1966 2 1 2 1 2 0 0 *** 0 1 0 1 *** 1967 0 3 0 1 1 0 0 0 0 0 2 0 7 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 6 1 4 6 1 0 0 0 0 0 1 1 20 1970 0 1 2 2 0 0 0 0 0 0 0 4 9 1971 *** 1 4 3 0 0 0 1 0 1 3 2 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 0 2 0 2 0 0 0 0 0 0 0 2 6 1974 3 4 2 1 0 0 0 0 0 0 0 2 12 1975 1 2 1 1 1 0 0 0 0 0 3 2 11 1976 3 0 3 1 1 0 0 0 0 0 2 0 10 1977 1 1 3 2 1 0 0 0 0 2 1 3 14 1978 1 1 2 0 0 0 0 0 0 0 0 3 7 1979 3 2 1 2 2 0 0 *** 0 0 1 2 *** 1980 4 5 4 2 1 0 0 0 0 0 3 4 23 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 8 1 3 1 0 0 0 *** 0 0 3 0 *** MEAN 2 2 2 2 1 0 0 0 0 0 1 2 12 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 15 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 03 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 *** *** *** *** *** *** *** *** 53 60 78 76 *** 1956 76 83 73 63 59 60 62 61 71 75 78 78 70 1957 78 64 81 80 81 74 66 75 74 77 81 75 76 1958 77 72 77 78 82 76 60 66 77 79 72 74 74 1959 74 57 72 80 72 69 61 60 70 71 73 70 69 1960 76 75 79 82 79 59 46 50 70 84 83 80 72 1961 76 75 74 81 66 58 56 54 63 70 74 73 68 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 42 45 81 75 65 *** 1966 85 84 80 82 71 60 50 *** 41 58 53 56 *** 1967 70 76 70 66 62 43 26 24 44 57 69 78 57 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 80 72 70 64 48 41 33 31 42 55 76 74 57 1970 76 71 70 49 42 24 27 24 37 43 61 65 49 1971 *** 72 76 69 38 28 21 24 28 47 77 71 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 *** 77 76 60 45 42 32 32 43 55 66 64 *** 1974 53 69 79 65 52 53 49 49 59 67 78 77 63 1975 76 73 78 72 76 66 49 48 53 67 80 83 68 1976 78 79 76 68 45 24 22 22 36 55 66 83 55 1977 62 64 67 64 57 57 35 47 64 79 87 79 64 1978 82 79 76 70 67 58 45 48 56 57 76 79 66 1979 84 79 82 63 72 59 43 *** 50 61 60 82 *** 1980 88 83 75 62 61 49 43 50 51 60 82 81 65 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 79 76 69 69 73 61 59 *** 53 54 77 71 *** MEAN 76 74 75 69 62 53 44 45 54 64 74 74 64 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 16 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 09 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 *** *** *** *** *** *** *** *** 23 24 39 57 *** 1956 71 54 49 50 31 30 29 33 38 28 39 69 43 1957 80 79 61 61 65 50 32 27 22 56 73 71 56 1958 72 67 46 54 57 38 39 33 33 42 49 68 50 1959 60 67 57 45 48 36 39 36 34 37 43 76 48 1960 59 47 62 48 41 24 19 21 22 32 53 73 42 1961 84 85 50 54 42 41 34 22 25 37 51 66 49 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 31 37 68 59 62 *** 1966 82 79 79 73 62 47 61 *** 45 70 36 44 *** 1967 66 77 43 32 33 15 15 12 34 37 52 66 40 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 80 81 51 40 32 19 13 15 18 31 46 43 39 1970 60 41 41 31 23 15 18 15 21 19 31 67 32 1971 *** 76 52 38 23 17 13 16 16 22 51 66 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 79 64 51 31 21 16 17 17 19 22 37 59 36 1974 72 77 67 39 32 32 33 30 36 49 60 80 51 1975 84 77 74 53 65 54 26 26 25 28 49 76 53 1976 72 76 60 42 26 15 14 13 21 30 38 58 39 1977 74 59 39 39 34 33 22 29 41 59 67 62 47 1978 59 59 53 37 38 28 27 29 32 34 46 50 41 1979 63 47 47 34 42 31 28 *** 26 37 38 60 *** 1980 78 65 55 48 45 36 37 36 39 39 54 63 50 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 82 56 58 52 52 38 26 *** 20 41 72 70 *** MEAN 72 67 55 45 41 31 27 25 29 38 49 64 45 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 17 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. MONTHLY MEAN OF RELATIVE HUMIDITY AT HOUR 15 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 *** *** *** *** *** *** *** *** 28 32 47 67 *** 1956 76 65 57 58 41 47 45 42 43 34 47 71 52 1957 80 75 71 72 72 49 34 35 48 64 78 75 63 1958 75 78 54 59 63 55 39 37 44 57 57 80 58 1959 79 81 65 54 56 55 41 41 48 51 48 81 58 1960 73 64 74 61 47 47 32 26 36 38 59 79 53 1961 83 86 69 72 58 42 35 39 44 47 64 74 59 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 29 40 70 59 67 *** 1966 82 77 82 82 67 54 57 *** 34 62 53 56 *** 1967 74 80 52 36 39 16 14 9 40 42 61 74 45 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 84 77 62 50 34 21 14 17 24 34 52 55 44 1970 68 50 50 37 28 21 23 18 25 25 45 71 38 1971 *** 77 68 53 29 22 17 19 20 28 64 71 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 76 68 56 34 26 22 19 19 22 25 45 69 40 1974 65 74 72 39 34 34 35 34 41 52 66 82 52 1975 84 79 75 61 68 57 29 32 32 36 59 81 58 1976 80 81 66 46 31 17 16 16 25 35 49 74 45 1977 69 63 43 44 37 37 24 33 51 68 71 68 51 1978 68 64 59 44 42 35 27 34 42 41 54 59 47 1979 74 54 58 41 54 44 31 *** 36 50 50 77 *** 1980 84 80 61 46 44 35 32 31 35 41 63 71 52 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 83 66 64 56 62 42 29 *** 23 46 80 77 *** MEAN 77 72 63 52 47 38 30 28 36 44 58 72 51 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 18 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 *** *** *** *** *** *** *** *** 0 0 0 12 *** 1956 26 9 5 2 0 0 0 0 0 0 2 19 63 1957 30 23 0 0 0 0 0 0 0 0 1 13 67 1958 13 24 1 0 0 0 0 0 0 0 10 15 63 1959 30 27 12 0 0 0 0 0 0 0 13 27 109 1960 20 25 29 0 0 0 0 0 0 0 3 25 102 1961 25 22 13 0 0 0 0 0 0 0 7 15 82 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** *** *** 0 8 28 *** 1966 18 27 24 6 0 0 0 *** 0 0 1 15 *** 1967 *** *** *** *** 0 *** *** 0 0 0 2 19 *** 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 *** *** *** *** *** 0 0 0 *** *** *** *** *** 1970 13 3 0 0 0 0 0 0 0 0 0 15 31 1971 *** *** 1 0 0 0 0 0 0 0 0 9 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 30 6 9 0 0 0 0 0 0 0 13 22 80 1974 30 19 8 0 0 0 0 0 0 0 3 18 78 1975 22 17 5 0 0 0 0 0 0 0 2 16 62 1976 21 21 6 0 0 0 0 0 0 0 1 11 60 1977 24 19 1 0 0 0 0 0 0 0 0 8 52 1978 10 2 0 0 0 0 0 0 0 0 8 0 20 1979 10 0 5 0 0 0 0 *** 0 0 0 7 *** 1980 17 11 4 0 0 0 0 0 0 0 0 24 56 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 25 12 2 0 0 0 0 *** 0 0 1 0 *** MEAN 21 16 7 0 0 0 0 0 0 0 4 15 63 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 19 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 *** *** *** *** *** *** *** *** 0 0 0 0 *** 1956 0 0 0 0 0 0 1 1 0 0 0 0 2 1957 0 0 0 0 0 0 0 0 0 0 0 0 0 1958 0 0 0 0 0 0 0 1 0 0 0 0 1 1959 0 0 0 0 0 0 0 0 0 0 0 0 0 1960 0 0 0 0 0 0 0 0 0 0 0 0 0 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** *** *** 0 0 0 *** 1966 0 0 0 0 0 0 21 *** 1 0 0 0 *** 1967 *** *** *** *** 0 *** *** 1 0 0 0 0 *** 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 *** *** *** *** *** 2 3 8 *** *** *** *** *** 1970 0 0 0 0 1 9 25 21 0 0 0 0 56 1971 *** *** 0 0 0 5 24 0 0 0 0 0 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 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 17 9 0 0 0 0 26 1978 0 0 0 0 0 0 5 5 0 0 0 0 10 1979 0 0 0 0 0 0 9 *** 0 0 0 0 *** 1980 0 0 0 0 0 0 14 2 0 0 0 0 16 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 0 0 0 0 0 0 1 *** 0 0 0 0 *** MEAN 0 0 0 0 0 1 6 3 0 0 0 0 10 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 20 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 *** *** *** *** *** *** *** *** 0 0 0 0 *** 1956 7 0 0 0 0 0 0 0 0 0 0 8 15 1957 19 7 0 0 0 0 0 0 0 0 0 0 26 1958 1 2 0 0 0 0 0 0 0 0 0 0 3 1959 0 1 2 0 0 0 0 0 0 0 5 0 8 1960 0 0 1 0 0 0 0 0 0 0 0 1 2 1961 0 4 1 0 0 0 0 0 0 0 0 0 5 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 0 0 0 0 2 *** 1966 0 0 0 0 0 0 0 *** 0 0 0 0 *** 1967 *** *** *** *** *** *** *** *** *** *** *** *** *** 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 *** *** *** *** *** *** *** *** *** *** *** *** *** 1970 2 0 0 0 0 0 0 0 0 0 0 6 8 1971 *** *** *** *** *** *** *** *** *** *** *** *** *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 *** *** *** *** *** *** *** *** *** *** *** *** *** 1974 *** *** *** *** *** *** *** *** *** *** *** *** *** 1975 *** *** *** *** *** *** *** *** *** *** *** *** *** 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1978 1 0 0 0 0 0 0 0 0 0 0 0 1 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 *** *** *** *** *** *** *** *** *** *** *** *** *** 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 6 0 0 0 0 0 0 *** 0 0 0 0 *** MEAN 4 1 0 0 0 0 0 0 0 0 0 1 6 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 21 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 *** *** *** *** *** *** *** *** 14 2 0 0 *** 1956 0 0 0 0 5 28 31 31 21 0 0 0 116 1957 0 0 0 0 0 14 31 31 25 0 0 0 101 1958 0 0 0 1 11 28 30 29 27 1 0 0 127 1959 0 0 0 0 6 24 31 31 30 8 0 0 130 1960 0 0 0 0 1 28 30 31 27 0 0 0 117 1961 0 0 0 0 2 24 31 30 28 1 0 0 116 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 28 11 0 0 0 *** 1966 0 0 0 0 0 13 26 *** 10 0 0 0 *** 1967 *** *** *** *** *** *** *** *** *** *** *** *** *** 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 *** *** *** *** *** *** *** *** *** *** *** *** *** 1970 0 0 0 0 3 18 28 29 7 3 0 0 88 1971 *** *** *** *** *** *** *** *** *** *** *** *** *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 *** *** *** *** *** *** *** *** *** *** *** *** *** 1974 *** *** *** *** *** *** *** *** *** *** *** *** *** 1975 *** *** *** *** *** *** *** *** *** *** *** *** *** 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** 0 0 0 20 31 31 25 2 0 0 *** 1978 0 0 0 0 2 21 31 31 28 0 0 0 113 1979 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 *** *** *** *** *** *** *** *** *** *** *** *** *** 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 0 0 0 0 0 26 30 *** 27 6 0 0 *** MEAN 0 0 0 0 3 22 30 30 22 2 0 0 109 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 22 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 *** *** *** *** *** *** *** *** 0 0 0 0 *** 1956 0 0 0 0 0 0 0 0 0 0 0 0 0 1957 0 0 0 0 0 0 1 0 0 0 0 0 1 1958 0 0 0 0 0 0 0 0 0 0 0 0 0 1959 0 0 0 0 0 0 0 1 0 0 0 0 1 1960 0 0 0 0 0 4 2 0 0 0 0 0 6 1961 0 0 0 0 0 0 2 0 0 0 0 0 2 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1966 0 0 0 0 0 0 0 *** 0 0 0 0 *** 1967 *** *** *** *** *** *** *** *** *** *** *** *** *** 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 *** *** *** *** *** *** *** *** *** *** *** *** *** 1970 0 0 0 0 0 0 0 0 0 0 0 0 0 1971 *** *** *** *** *** *** *** *** *** *** *** *** *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 *** *** *** *** *** *** *** *** *** *** *** *** *** 1974 *** *** *** *** *** *** *** *** *** *** *** *** *** 1975 *** *** *** *** *** *** *** *** *** *** *** *** *** 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 *** *** *** *** *** *** *** *** *** *** *** *** *** 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 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 23 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 *** *** *** *** *** *** *** *** 0 0 0 0 *** 1956 0 0 0 0 0 0 0 0 0 0 0 0 0 1957 0 0 0 0 0 0 0 0 0 0 0 0 0 1958 0 0 0 0 0 0 0 0 0 0 0 0 0 1959 0 0 0 0 0 0 0 0 0 0 0 0 0 1960 0 0 0 0 0 0 0 0 0 0 0 0 0 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1966 0 0 0 0 0 0 0 *** 0 0 0 0 *** 1967 *** *** *** *** *** *** *** *** *** *** *** *** *** 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 *** *** *** *** *** *** *** *** *** *** *** *** *** 1970 0 0 0 0 0 0 0 0 0 0 0 0 0 1971 *** *** *** *** *** *** *** *** *** *** *** *** *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 *** *** *** *** *** *** *** *** *** *** *** *** *** 1974 *** *** *** *** *** *** *** *** *** *** *** *** *** 1975 *** *** *** *** *** *** *** *** *** *** *** *** *** 1976 *** *** *** *** *** *** *** *** *** *** *** *** *** 1977 *** *** 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1980 *** *** *** *** *** *** *** *** *** *** *** *** *** 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 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 NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 -------------- 1955 *** *** *** *** *** *** *** *** 0 7 10 24 *** 10 24 12 31 1956 31 17 20 5 1 0 0 0 2 10 21 26 133 9 24 5 8 1957 30 28 12 1 0 0 0 0 0 0 6 22 99 11 13 4 6 1958 27 28 18 3 0 0 0 0 0 0 17 24 117 11 1 4 19 1959 31 27 23 5 0 0 0 0 0 0 27 31 144 11 2 4 10 1960 28 28 30 5 0 0 0 0 0 13 16 30 150 10 14 4 29 1961 28 27 21 8 0 0 0 0 0 9 19 26 138 10 14 4 19 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1965 *** *** *** *** *** *** *** *** *** 6 14 31 *** 10 17 12 31 1966 28 28 31 17 2 0 0 *** 0 0 6 27 *** 11 25 5 8 1967 *** *** *** *** 0 *** *** 0 0 0 16 31 *** 11 15 12 31 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1969 *** *** *** *** *** 0 0 0 *** *** *** *** *** ** ** ** ** 1970 30 14 5 0 0 0 0 0 0 0 1 25 75 11 30 3 27 1971 *** *** 9 2 0 0 0 0 0 0 0 21 *** 12 3 4 4 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1973 31 22 26 4 0 0 0 0 0 0 18 31 132 11 6 4 13 1974 31 28 13 9 0 0 0 0 0 2 11 31 125 10 19 4 30 1975 29 22 16 2 0 0 0 0 0 4 23 29 125 10 8 4 4 1976 30 28 18 1 0 0 0 0 0 0 6 30 113 11 20 4 5 1977 30 23 7 0 0 0 0 0 0 0 13 16 89 11 14 3 15 1978 24 11 8 1 0 0 0 0 0 0 18 13 75 11 3 4 1 1979 16 11 10 1 0 0 0 *** 0 0 8 21 *** 11 20 4 29 1980 27 27 12 1 0 0 0 0 0 0 3 30 100 11 26 4 18 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** ** ** ** ** 1984 30 25 7 0 1 0 0 *** 0 1 7 18 *** 10 20 5 2 MEAN 28 23 16 4 0 0 0 0 0 2 12 26 111 9 24 5 8 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 25 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 ****** ****** ****** ****** ****** ****** ****** ****** 20.8 15.5 10.6 4.6 ****** 1956 -1.0 5.6 7.2 12.6 17.3 23.2 27.0 26.7 20.6 15.4 10.5 1.3 13.9 1957 -6.8 -5.3 8.2 10.0 13.3 20.3 25.1 24.3 20.9 14.3 8.4 4.0 11.4 1958 2.6 1.2 9.6 13.5 17.0 21.9 25.6 25.1 20.8 15.4 7.6 2.7 13.6 1959 1.6 -0.2 6.0 11.5 14.6 20.5 25.5 25.5 20.3 16.0 5.2 -2.1 12.0 1960 4.8 6.6 3.7 10.8 14.8 20.7 25.9 25.5 21.4 13.5 8.4 2.8 13.2 1961 -0.2 -0.1 5.7 9.4 15.6 22.3 26.6 25.4 19.1 13.2 7.9 5.1 12.5 1962 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1963 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1964 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1965 ****** ****** ****** ****** ****** ****** ****** 28.2 21.3 13.0 9.6 4.0 ****** 1966 5.8 3.6 5.0 9.8 16.7 23.2 26.4 ****** 20.4 12.2 9.0 3.8 ****** 1967 -0.1 -0.8 4.1 10.1 16.8 23.2 28.6 28.9 17.7 15.0 8.2 0.8 12.7 1968 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1969 -2.0 0.1 8.8 11.0 19.0 24.0 27.2 27.5 20.6 16.5 7.1 5.5 13.8 1970 0.9 6.1 7.2 14.1 18.6 24.0 26.7 27.0 21.0 17.1 10.6 0.2 14.5 1971 ****** 0.3 5.4 9.5 19.0 22.9 28.8 26.5 22.4 15.5 7.4 1.1 ****** 1972 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1973 -4.5 3.9 5.7 12.8 18.5 23.9 28.8 28.3 22.1 17.8 7.3 2.1 13.9 1974 -4.2 -3.5 6.1 11.6 19.5 23.3 25.7 24.4 19.7 15.1 10.0 0.3 12.3 1975 -0.4 -0.4 6.7 13.2 15.5 22.4 26.3 25.7 22.0 13.9 7.1 0.8 12.7 1976 1.6 -0.1 3.6 10.4 16.8 24.4 27.6 28.2 23.5 17.3 10.6 4.5 14.0 1977 -4.4 0.7 10.7 11.8 17.7 23.0 29.3 27.8 22.0 14.0 8.9 5.2 13.9 1978 3.9 6.7 8.9 14.1 18.8 23.5 28.5 27.1 22.6 17.8 6.7 7.6 15.5 1979 3.1 7.8 8.0 15.6 17.9 23.5 29.9 ****** 24.5 18.1 12.8 3.3 ****** 1980 -0.2 2.1 8.5 15.5 19.6 25.9 29.8 28.3 23.2 17.0 10.4 4.1 15.4 1981 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 -1.7 4.1 9.6 14.1 15.7 24.8 28.0 ****** 25.1 15.9 5.8 3.3 ****** MEAN -0.1 1.9 6.9 12.1 17.1 23.0 27.4 26.7 21.5 15.4 8.6 3.0 13.6 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 26 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 ****** ****** ****** ****** ****** ****** ****** ****** 1.2 -0.6 0.7 -1.5 ****** 1956 -5.5 -0.6 -0.8 3.7 3.8 9.7 13.0 13.2 9.1 2.0 0.7 -3.4 3.7 1957 -9.9 -9.6 2.9 4.8 8.3 10.8 10.8 10.1 7.3 7.4 4.5 -0.5 3.9 1958 -1.6 -3.4 1.2 6.2 10.6 11.6 12.3 11.3 8.9 6.5 -0.6 -1.7 5.1 1959 -3.3 -5.5 -0.6 3.3 6.1 9.8 12.8 12.3 8.6 5.5 -4.3 -5.9 3.2 1960 -0.7 -0.7 -1.3 3.6 5.2 6.1 6.9 6.4 6.2 2.0 1.5 -0.9 2.9 1961 -3.0 -2.8 -1.2 3.6 6.2 10.0 11.4 8.9 5.1 2.6 0.9 -0.0 3.5 1962 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1963 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1964 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1965 ****** ****** ****** ****** ****** ****** ****** 6.8 5.2 7.4 2.8 -3.0 ****** 1966 2.9 0.2 1.7 6.0 9.9 12.9 16.6 ****** 5.4 4.6 -2.5 -7.1 ****** 1967 -5.6 -4.5 -5.4 -2.6 3.1 -0.7 0.9 -2.1 1.0 2.3 0.6 -4.0 -1.4 1968 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1969 -5.4 -3.8 1.0 0.2 2.6 2.6 0.3 1.8 -0.1 1.0 -1.4 -3.0 -0.4 1970 -4.7 -3.3 -2.5 -1.2 -1.0 -1.4 3.1 0.9 0.8 -2.4 -2.0 -5.7 -1.6 1971 ****** -3.3 -1.1 -0.4 0.3 -0.5 0.4 0.8 -1.3 -2.1 0.3 -4.6 ****** 1972 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1973 ****** -1.4 -1.8 -1.0 -0.3 1.8 4.2 4.0 1.5 0.1 -3.8 -4.4 ****** 1974 -11.0 -6.8 1.2 -0.5 4.6 7.9 10.2 8.1 6.8 5.9 4.1 -3.0 2.3 1975 -3.3 -4.3 2.5 5.7 9.7 13.6 8.4 8.3 5.5 0.4 -0.5 -2.4 3.6 1976 -2.2 -3.5 -2.3 0.2 0.0 -1.7 0.0 0.1 2.9 2.8 0.3 -0.4 -0.3 1977 -8.3 -6.0 -0.3 0.7 4.1 8.9 7.3 9.5 11.1 7.8 4.5 -0.3 3.3 1978 -1.1 1.2 1.4 3.1 6.9 8.0 9.8 10.4 8.8 4.7 -0.9 0.6 4.4 1979 -1.7 -0.2 0.2 2.7 7.8 9.8 11.7 ****** 8.0 6.5 1.8 -1.3 ****** 1980 -2.7 -2.0 1.4 5.2 8.4 10.9 13.3 12.5 9.1 4.8 3.8 -0.9 5.3 1981 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 -4.6 -1.9 2.4 5.6 8.1 11.9 11.0 ****** 4.9 3.3 1.9 -1.3 ****** MEAN -4.0 -3.1 -0.1 2.5 5.2 7.1 8.2 6.8 5.3 3.3 0.6 -2.5 2.4 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 27 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 ****** ****** ****** ****** ****** ****** ****** ****** 6.15 4.60 4.98 4.34 ****** 1956 3.38 4.69 4.53 6.26 6.35 9.63 11.69 11.83 9.31 5.48 5.02 3.87 6.84 1957 2.42 2.87 5.89 6.75 8.65 10.27 10.05 9.45 7.92 8.15 6.65 4.74 6.98 1958 4.33 3.97 5.21 7.58 10.32 10.74 11.62 10.66 8.93 7.71 4.76 4.31 7.51 1959 3.87 3.45 4.85 6.03 7.48 9.73 12.18 11.58 9.09 7.17 3.83 3.35 6.88 1960 4.69 4.75 4.55 6.13 6.95 7.31 7.67 7.56 7.26 5.54 5.32 4.59 6.03 1961 3.97 4.17 4.41 6.20 7.46 10.20 10.73 8.73 6.88 5.82 5.27 4.93 6.57 1962 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1963 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1964 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1965 ****** ****** ****** ****** ****** ****** ****** 10.07 7.35 8.20 5.84 4.07 ****** 1966 5.90 4.99 5.57 7.33 9.76 11.69 15.08 ****** 7.56 6.81 4.04 3.04 ****** 1967 3.36 3.51 3.27 3.90 6.03 4.61 5.08 4.04 5.25 5.58 4.98 3.63 4.44 1968 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1969 3.49 3.81 5.08 4.85 5.80 5.68 4.86 5.37 4.76 5.12 4.37 3.84 4.75 1970 3.43 3.70 3.95 4.34 4.48 4.26 5.83 4.98 4.93 3.93 4.07 3.37 4.27 1971 ****** 3.97 4.40 4.52 4.76 4.47 4.82 4.92 4.27 4.00 4.78 3.76 ****** 1972 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1973 ****** 4.28 4.15 4.32 4.58 5.41 6.35 6.19 5.17 4.76 3.61 3.60 ****** 1974 2.38 3.20 5.26 4.53 6.55 8.27 9.61 8.57 7.66 7.34 6.57 3.93 6.16 1975 3.90 3.86 5.84 7.22 9.58 12.51 8.57 8.43 6.92 4.81 4.53 4.04 6.68 1976 4.10 3.79 4.13 4.75 4.67 4.12 4.69 4.68 5.70 5.70 4.78 4.57 4.64 1977 2.92 3.46 4.62 4.91 6.34 8.80 7.86 9.52 10.36 8.28 6.60 4.74 6.53 1978 4.40 5.15 5.25 5.90 7.70 8.34 9.36 9.92 8.90 6.64 4.46 4.96 6.75 1979 4.26 4.64 4.87 5.75 8.23 9.30 10.67 ****** 8.33 7.45 5.52 4.30 ****** 1980 3.92 4.09 5.42 7.04 8.57 10.16 11.98 11.38 9.21 6.75 6.19 4.51 7.44 1981 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 3.54 4.18 5.78 7.18 8.40 10.91 10.07 ****** 7.16 6.10 5.56 4.33 ****** MEAN 3.79 4.03 4.85 5.77 7.13 8.32 8.94 8.22 7.23 6.18 5.08 4.13 6.14 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 28 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 ****** ****** ****** ****** ****** ****** ****** ****** 8.08 6.08 6.54 5.69 ****** 1956 4.42 6.15 5.94 8.22 8.37 12.67 15.38 15.56 12.25 7.23 6.60 5.06 8.99 1957 3.16 3.75 7.72 8.85 11.33 13.47 13.25 12.46 10.43 10.70 8.71 6.20 9.17 1958 5.67 5.19 6.84 9.94 13.51 14.10 15.27 14.03 11.76 10.14 6.25 5.65 9.86 1959 5.07 4.52 6.37 7.92 9.83 12.79 15.99 15.22 11.96 9.44 5.03 4.37 9.04 1960 6.15 6.23 5.96 8.06 9.13 9.65 10.15 10.00 9.58 7.30 6.98 6.01 7.93 1961 5.20 5.44 5.79 8.14 9.81 13.39 14.12 11.53 9.08 7.67 6.92 6.47 8.63 1962 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1963 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1964 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1965 ****** ****** ****** ****** ****** ****** ****** 13.11 9.68 10.74 7.66 5.34 ****** 1966 7.72 6.53 7.29 9.59 12.78 15.33 19.69 ****** 9.94 8.93 5.31 3.98 ****** 1967 4.40 4.59 4.29 5.14 7.95 6.12 6.76 5.38 6.93 7.35 6.54 4.75 5.85 1968 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1969 4.57 4.98 6.67 6.38 7.65 7.53 6.46 7.14 6.30 6.75 5.73 5.04 6.27 1970 4.49 4.86 5.19 5.72 5.93 5.66 7.73 6.63 6.53 5.20 5.35 4.41 5.64 1971 ****** 5.19 5.78 5.94 6.29 5.93 6.41 6.54 5.67 5.29 6.28 4.93 ****** 1972 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1973 ****** 5.61 5.44 5.69 6.07 7.17 8.43 8.22 6.86 6.29 4.74 4.72 ****** 1974 3.10 4.18 6.89 5.97 8.65 10.91 12.67 11.31 10.10 9.64 8.61 5.14 8.10 1975 5.10 5.05 7.65 9.48 12.55 16.37 11.32 11.14 9.14 6.35 5.95 5.29 8.78 1976 5.36 4.96 5.41 6.25 6.16 5.47 6.24 6.23 7.56 7.52 6.29 5.99 6.12 1977 3.81 4.53 6.08 6.46 8.36 11.60 10.42 12.56 13.61 10.86 8.65 6.21 8.60 1978 5.77 6.75 6.90 7.77 10.14 11.00 12.37 13.08 11.73 8.75 5.85 6.50 8.88 1979 5.58 6.10 6.40 7.58 10.82 12.25 14.08 ****** 11.00 9.81 7.26 5.63 ****** 1980 5.13 5.35 7.11 9.26 11.27 13.39 15.77 14.99 12.13 8.90 8.13 5.91 9.78 1981 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 4.62 5.48 7.59 9.43 11.02 14.34 13.29 ****** 9.46 8.04 7.29 5.67 ****** MEAN 4.96 5.27 6.37 7.59 9.38 10.96 11.79 10.84 9.53 8.13 6.67 5.41 8.08 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 29 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 ****** ****** ****** ****** ****** ****** ****** ****** 19.79 13.65 7.05 3.20 ****** 1956 1.74 3.44 4.87 7.10 13.67 19.21 23.68 22.65 15.48 13.30 7.38 2.44 11.25 1957 0.77 0.99 3.71 4.12 4.89 12.96 21.75 21.53 17.96 7.19 2.80 2.33 8.42 1958 2.01 2.26 5.93 6.75 7.93 15.02 21.18 21.94 16.82 9.69 5.33 2.10 9.75 1959 2.31 1.97 4.31 6.75 8.46 15.10 21.62 22.01 16.38 11.38 6.08 1.37 9.81 1960 3.24 4.85 2.95 5.64 9.50 18.63 27.45 26.61 19.71 10.60 4.88 1.98 11.34 1961 1.11 1.02 4.18 4.40 9.62 16.36 24.00 23.87 16.21 9.75 4.58 2.80 9.82 1962 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1963 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1964 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1965 ****** ****** ****** ****** ****** ****** ****** 26.04 17.06 4.92 4.53 3.32 ****** 1966 1.89 1.70 1.95 3.13 6.81 13.98 15.37 ****** 14.78 5.54 6.62 4.51 ****** 1967 2.06 1.38 4.43 7.84 12.01 24.17 34.11 36.86 15.01 10.08 4.90 2.15 12.92 1968 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1969 1.09 1.52 5.09 7.49 15.45 23.65 31.60 31.99 19.66 13.23 4.77 4.53 13.34 1970 2.32 5.00 5.45 11.33 16.55 25.48 28.47 30.47 19.64 15.41 8.11 2.20 14.20 1971 ****** 1.56 3.62 6.44 16.27 22.89 35.05 29.33 22.65 13.23 4.49 2.11 ****** 1972 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1973 ****** 2.75 4.14 9.82 16.37 25.36 33.35 32.12 21.94 15.44 6.38 2.77 ****** 1974 1.52 1.13 2.96 8.57 15.48 19.79 21.91 21.16 14.34 8.66 4.58 1.47 10.13 1975 1.11 1.46 2.79 6.58 6.34 12.68 25.98 24.44 19.15 10.89 4.70 1.46 9.80 1976 1.76 1.39 3.13 6.92 13.66 26.22 32.65 33.56 22.65 13.15 7.04 2.77 13.74 1977 1.32 2.98 7.33 7.80 12.67 18.12 32.12 27.10 14.50 6.40 3.36 3.03 11.39 1978 2.92 3.69 5.12 9.22 13.12 19.89 28.65 25.34 18.21 12.98 4.90 4.55 12.38 1979 2.55 4.97 4.96 11.13 10.75 18.41 30.34 ****** 21.87 12.13 8.48 2.51 ****** 1980 1.28 1.98 4.77 9.23 12.85 21.67 27.86 25.84 18.29 11.91 5.01 3.02 11.97 1981 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1982 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1983 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1984 1.08 3.33 5.04 7.29 7.51 18.68 26.45 ****** 24.88 11.87 2.31 2.19 ****** MEAN 1.78 2.47 4.34 7.38 11.49 19.41 27.18 26.83 18.50 10.97 5.38 2.67 11.53 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 30 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 *** *** *** *** *** *** *** *** 35 39 54 66 *** 1956 74 67 60 57 44 45 45 45 51 46 54 73 55 1957 79 73 71 71 73 57 44 46 48 66 77 74 65 1958 75 73 59 64 67 56 46 45 51 59 59 74 61 1959 71 68 65 60 58 53 47 46 50 53 55 76 59 1960 69 62 72 64 56 43 32 33 42 52 65 77 56 1961 81 82 64 69 56 47 41 38 44 52 63 71 59 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 34 41 73 64 65 *** 1966 83 80 80 79 67 54 56 *** 40 63 47 52 *** 1967 70 78 55 45 45 25 18 15 39 45 61 72 47 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 82 77 61 51 38 27 20 21 28 40 58 58 47 1970 68 54 54 39 31 20 23 19 28 29 46 68 40 1971 *** 76 65 53 30 22 17 20 22 33 64 69 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 *** 70 61 42 31 27 22 23 28 34 49 64 *** 1974 63 75 72 48 39 40 39 38 45 56 68 80 55 1975 81 76 75 62 70 59 35 35 37 44 62 80 60 1976 77 79 68 52 34 19 17 17 27 40 51 72 46 1977 70 62 50 49 43 43 27 36 52 69 75 70 54 1978 69 69 63 50 49 40 33 37 43 44 59 63 52 1979 74 60 62 46 56 45 34 *** 37 49 49 73 *** 1980 83 76 64 52 50 40 37 39 42 47 67 72 56 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 82 66 63 59 63 47 38 *** 32 47 76 73 *** MEAN 75 71 64 56 50 40 34 33 39 49 60 70 53 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 31 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 *** *** *** *** *** *** *** *** 57 62 78 80 *** 1956 86 84 76 68 60 60 61 61 71 75 78 82 72 1957 85 83 83 81 83 74 66 75 75 78 83 82 79 1958 84 80 78 78 82 76 60 66 77 80 78 82 77 1959 82 81 77 80 72 69 61 60 70 71 76 85 74 1960 80 76 83 82 79 59 46 50 69 84 83 84 73 1961 86 89 79 82 67 58 56 54 63 71 76 79 72 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 46 52 88 76 75 *** 1966 91 91 90 88 76 62 65 *** 49 74 62 66 *** 1967 82 87 74 66 63 43 26 24 49 59 72 85 61 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 92 85 74 65 50 41 33 31 44 55 79 75 60 1970 79 72 73 50 42 25 28 24 38 43 62 83 52 1971 *** 86 79 69 39 28 22 24 29 47 79 83 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 *** 81 77 60 45 43 32 33 43 55 67 77 *** 1974 76 82 83 65 53 54 50 49 59 67 78 87 67 1975 89 84 82 74 77 67 49 48 54 67 80 87 72 1976 86 87 80 69 45 24 23 22 36 55 66 85 57 1977 82 75 68 65 58 57 35 49 64 81 87 83 67 1978 84 82 78 71 67 58 45 49 56 57 77 80 67 1979 87 81 86 64 72 59 45 *** 51 62 62 86 *** 1980 92 88 77 65 62 50 45 50 51 61 82 85 67 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 91 79 73 71 74 61 59 *** 53 60 85 81 *** MEAN 85 83 79 71 63 53 45 45 55 66 76 81 67 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 32 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 MET. AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1955 *** *** *** *** *** *** *** *** 18 22 38 55 *** 1956 62 52 45 46 30 30 29 32 37 27 38 65 41 1957 72 59 59 60 63 46 30 27 22 55 71 65 52 1958 66 63 43 51 56 38 33 33 32 40 44 64 47 1959 60 55 53 45 47 36 38 35 34 37 38 64 45 1960 58 47 60 48 40 24 19 21 22 30 52 69 41 1961 75 74 49 54 42 38 29 22 25 37 50 63 47 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 26 30 61 55 53 *** 1966 75 71 72 69 56 46 46 *** 33 49 34 38 *** 1967 58 67 39 30 31 15 13 9 31 34 50 61 37 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 69 67 48 38 29 19 13 14 18 30 42 43 36 1970 58 40 39 29 22 14 18 15 20 19 30 50 30 1971 *** 64 50 38 22 17 13 16 16 22 50 55 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 *** 60 50 30 21 16 16 16 19 21 36 52 *** 1974 50 67 63 36 31 30 31 29 34 48 59 71 46 1975 73 66 68 52 63 51 24 25 25 28 48 72 50 1976 67 70 56 40 25 14 14 13 21 30 38 58 37 1977 59 51 38 38 33 33 21 27 41 58 64 59 44 1978 58 58 52 36 36 27 25 28 32 34 45 49 40 1979 62 45 45 33 42 31 26 *** 26 37 36 59 *** 1980 75 64 53 43 41 33 30 31 33 36 54 60 46 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 72 53 54 47 52 36 25 *** 19 37 68 64 *** MEAN 65 60 52 43 39 30 25 23 27 36 47 59 42 IRANIAN METEOROLOGICAL ORGANIZATION ( IMO ) FORM 33 STATION NAHAVAND LATITUDE 34 12 N DATA PROCESSING CENTER LONGITUDE 48 22 E ELEVATION 1740 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 1955 *** *** *** *** *** *** *** *** 0 0 4 7 *** 1956 4 2 6 5 0 0 0 0 1 0 1 5 24 1957 8 3 6 7 5 0 0 0 0 3 7 2 41 1958 6 1 6 2 4 1 0 0 0 1 0 6 27 1959 1 1 4 3 3 0 0 0 0 1 1 0 14 1960 1 0 9 7 0 0 0 0 0 0 5 2 24 1961 5 4 4 6 0 0 0 0 0 0 1 4 24 1962 *** *** *** *** *** *** *** *** *** *** *** *** *** 1963 *** *** *** *** *** *** *** *** *** *** *** *** *** 1964 *** *** *** *** *** *** *** *** *** *** *** *** *** 1965 *** *** *** *** *** *** *** 0 0 1 2 0 *** 1966 5 1 5 3 2 0 0 *** 0 3 0 2 *** 1967 0 4 0 1 3 0 0 0 0 1 5 1 15 1968 *** *** *** *** *** *** *** *** *** *** *** *** *** 1969 9 2 7 9 1 0 0 0 0 3 1 2 34 1970 3 1 3 4 3 0 0 0 0 0 2 4 20 1971 *** 3 6 5 2 0 2 1 0 1 7 2 *** 1972 *** *** *** *** *** *** *** *** *** *** *** *** *** 1973 2 3 1 3 0 0 0 0 0 0 0 2 11 1974 7 6 6 2 0 0 0 0 0 0 1 3 25 1975 3 4 1 5 2 0 0 0 0 0 5 3 23 1976 5 2 5 5 2 0 0 0 1 0 3 2 25 1977 2 1 3 3 2 0 0 0 0 6 2 4 23 1978 1 2 4 2 1 0 0 0 0 0 0 9 19 1979 6 2 4 4 4 0 0 *** 0 0 2 7 *** 1980 7 8 6 4 1 0 0 0 0 0 4 4 34 1981 *** *** *** *** *** *** *** *** *** *** *** *** *** 1982 *** *** *** *** *** *** *** *** *** *** *** *** *** 1983 *** *** *** *** *** *** *** *** *** *** *** *** *** 1984 8 1 3 3 4 0 0 *** 0 1 4 2 *** MEAN 4 3 4 4 2 0 0 0 0 1 3 3 24