COLUSA 2 SSW, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 53.0 60.2 64.9 71.9 81.4 89.2 94.7 93.3 87.8 77.9 62.5 53.2 74.2
Highest Mean Max. Temperature (F) 58.5 65.8 72.9 80.6 86.7 94.7 99.2 98.7 92.4 85.5 70.3 59.6 76.3
Year Highest Occurred 1976 1988 1972 1987 1973 1981 1988 1967 1974 1978 1986 1976 1988
Lowest Mean Max. Temperature (F) 48.9 53.1 59.7 58.4 72.1 83.0 90.0 88.0 81.1 71.9 56.8 46.4 71.3
Year Lowest Occurred 1961 1969 1983 1967 1977 1980 1982 1976 1986 1984 1982 1972 1982
Mean Temperature (F) 44.3 49.7 53.3 58.0 66.3 72.8 76.6 75.3 70.6 62.7 51.5 44.6 60.5
Highest Mean Temperature (F) 49.5 55.6 58.5 63.4 70.3 78.0 81.2 80.0 74.1 66.6 54.7 48.7 61.7
Year Highest Occurred 1978 1963 1986 1990 1973 1981 1988 1967 1979 1987 1986 1977 1988
Lowest Mean Temperature (F) 40.2 45.7 50.1 48.5 59.8 67.9 72.2 72.4 65.6 59.1 48.0 39.3 58.8
Year Lowest Occurred 1963 1969 1985 1967 1977 1980 1987 1976 1986 1984 1982 1972 1982
Mean Min. Temperature (F) 35.5 39.1 41.5 44.0 51.3 56.3 58.6 57.3 53.3 47.4 40.4 36.0 46.7
Highest Mean Min. Temperature (F) 44.2 46.2 49.4 49.2 54.0 61.2 63.2 61.2 56.7 50.6 44.5 42.7 48.9
Year Highest Occurred 1978 1963 1986 1990 1984 1981 1988 1967 1967 1987 1970 1983 1983
Lowest Mean Min. Temperature (F) 28.7 34.2 36.1 38.6 47.5 52.8 53.2 54.8 49.7 43.2 36.2 29.3 45.0
Year Lowest Occurred 1963 1989 1976 1967 1977 1980 1987 1989 1965 1971 1978 1990 1975
Mean Precipitation (in.) 3.23 2.52 2.24 0.88 0.31 0.23 0.04 0.07 0.34 1.03 2.51 2.47 15.87
Highest Precipitation (in.) 8.03 7.10 7.38 4.81 2.14 1.48 0.96 0.86 2.95 6.24 6.31 7.97 35.68
Year Highest Occurred 1973 1980 1983 1967 1990 1967 1974 1965 1989 1962 1984 1983 1983
Lowest Precipitation (in.) 0.01 0.00 0.35 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.18 0.00 4.20
Year Lowest Occurred 1976 1964 1972 1987 1989 1990 1990 1990 1988 1985 1986 1989 1976
Heating Degree Days (F) 642. 428. 363. 239. 61. 6. 0. 0. 11. 108. 405. 632. 2895.
Cooling Degree Days (F) 0. 0. 0. 29. 102. 240. 360. 319. 179. 36. 0. 0. 1265.

Western Regional Climate Center, wrcc@dri.edu