IMPERIAL, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 69.3 74.1 77.9 84.7 92.8 102.2 106.0 104.5 99.3 89.3 77.4 69.1 87.2
Highest Mean Max. Temperature (F) 75.6 79.6 86.3 92.9 99.7 107.3 108.5 109.2 103.8 95.0 81.3 76.1 89.1
Year Highest Occurred 1986 1963 1972 1989 1984 1978 1978 1969 1979 1988 1977 1980 1989
Lowest Mean Max. Temperature (F) 62.8 68.9 72.0 75.2 86.0 95.8 103.3 101.0 93.2 81.6 73.2 63.5 85.7
Year Lowest Occurred 1979 1966 1973 1967 1977 1965 1984 1983 1976 1972 1964 1971 1971
Mean Temperature (F) 55.7 60.1 64.1 70.2 77.5 86.0 91.8 91.1 85.4 75.1 63.7 55.7 73.0
Highest Mean Temperature (F) 61.0 65.2 70.4 76.9 82.7 90.6 94.6 95.6 89.6 80.1 67.4 61.0 75.0
Year Highest Occurred 1986 1968 1972 1989 1984 1978 1980 1969 1979 1988 1967 1980 1981
Lowest Mean Temperature (F) 51.6 55.6 59.3 62.9 72.3 80.3 89.5 88.2 80.5 69.5 60.1 51.4 71.3
Year Lowest Occurred 1964 1966 1962 1967 1977 1965 1987 1968 1985 1971 1972 1990 1971
Mean Min. Temperature (F) 42.0 46.2 50.3 55.6 62.2 69.8 77.6 77.5 71.4 60.9 49.9 42.2 58.8
Highest Mean Min. Temperature (F) 48.4 51.7 54.9 60.8 65.7 73.9 80.7 82.0 77.7 66.0 53.9 47.1 60.8
Year Highest Occurred 1980 1968 1978 1989 1984 1981 1980 1969 1983 1987 1967 1977 1981
Lowest Mean Min. Temperature (F) 37.1 41.2 44.8 50.4 57.8 64.7 73.9 74.1 67.0 55.7 45.9 36.8 56.9
Year Lowest Occurred 1972 1964 1962 1975 1962 1965 1987 1976 1985 1971 1961 1990 1975
Mean Precipitation (in.) 0.35 0.29 0.27 0.07 0.01 0.00 0.11 0.35 0.34 0.28 0.27 0.41 2.75
Highest Precipitation (in.) 1.59 1.41 1.64 0.72 0.09 0.01 1.31 3.87 2.84 2.59 1.51 2.40 5.72
Year Highest Occurred 1980 1980 1983 1965 1979 1988 1968 1977 1976 1986 1969 1982 1983
Lowest Precipitation (in.) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.75
Year Lowest Occurred 1976 1989 1988 1989 1990 1990 1990 1980 1989 1989 1990 1990 1989
Heating Degree Days (F) 295. 154. 102. 38. 0. 0. 0. 0. 0. 6. 81. 294. 970.
Cooling Degree Days (F) 6. 16. 74. 194. 388. 630. 831. 809. 612. 319. 42. 5. 3926.

Western Regional Climate Center, wrcc@dri.edu