WHISKEYTOWN RESERVOIR, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 54.0 57.6 61.1 67.8 77.3 86.6 95.2 94.6 87.4 76.0 60.5 53.5 72.6
Highest Mean Max. Temperature (F) 59.6 66.9 68.8 78.5 82.6 93.3 99.4 101.6 95.2 86.6 69.3 62.8 75.3
Year Highest Occurred 1984 1988 1988 1962 1973 1961 1988 1967 1974 1988 1976 1976 1988
Lowest Mean Max. Temperature (F) 47.7 48.0 55.1 53.4 67.3 79.2 88.4 84.5 78.9 66.9 51.8 44.9 69.5
Year Lowest Occurred 1969 1969 1983 1967 1977 1980 1983 1976 1985 1984 1973 1972 1983
Mean Temperature (F) 44.7 47.7 50.5 56.1 64.4 72.7 79.3 78.4 72.3 62.9 50.9 44.9 60.4
Highest Mean Temperature (F) 48.9 53.0 56.1 62.8 69.2 77.3 82.6 85.0 78.3 69.6 57.2 50.4 61.6
Year Highest Occurred 1984 1988 1986 1962 1973 1961 1984 1967 1974 1988 1976 1962 1988
Lowest Mean Temperature (F) 40.5 41.1 46.9 45.3 57.0 66.7 74.0 71.4 65.7 56.3 46.3 38.2 58.4
Year Lowest Occurred 1973 1969 1975 1967 1977 1980 1983 1976 1986 1984 1984 1972 1982
Mean Min. Temperature (F) 35.3 37.8 39.8 44.2 51.5 58.7 63.4 62.2 57.1 49.8 41.3 36.2 48.1
Highest Mean Min. Temperature (F) 40.8 43.5 45.5 49.7 55.8 61.9 67.0 68.4 61.5 53.9 45.6 41.5 49.6
Year Highest Occurred 1970 1963 1978 1990 1973 1977 1967 1967 1967 1987 1967 1962 1981
Lowest Mean Min. Temperature (F) 30.0 32.1 35.9 37.2 45.5 54.1 59.5 58.3 52.1 45.7 36.5 29.2 46.6
Year Lowest Occurred 1963 1989 1962 1967 1961 1980 1966 1976 1986 1984 1985 1990 1982
Mean Precipitation (in.) 10.84 8.55 9.38 4.18 1.95 0.72 0.39 0.41 1.46 3.26 9.58 9.40 60.12
Highest Precipitation (in.) 32.90 23.93 39.62 14.14 13.09 3.10 7.08 3.59 8.27 11.81 27.78 25.93 134.43
Year Highest Occurred 1970 1986 1983 1963 1990 1982 1974 1976 1977 1962 1973 1964 1983
Lowest Precipitation (in.) 0.52 0.13 0.36 0.13 0.00 0.00 0.00 0.00 0.00 0.00 0.54 0.00 27.98
Year Lowest Occurred 1976 1988 1988 1973 1976 1987 1989 1988 1988 1978 1990 1989 1976
Heating Degree Days (F) 629. 484. 450. 304. 105. 9. 0. 0. 21. 145. 423. 623. 3193.
Cooling Degree Days (F) 0. 0. 0. 37. 86. 240. 443. 415. 240. 80. 0. 0. 1541.

Western Regional Climate Center, wrcc@dri.edu