CLOVERDALE, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 57.5 61.8 64.2 70.2 77.7 85.0 90.8 90.1 86.2 77.9 65.0 57.2 73.6
Highest Mean Max. Temperature (F) 62.5 69.0 73.0 79.2 83.7 91.1 95.5 95.0 94.1 83.8 72.2 63.7 76.0
Year Highest Occurred 1962 1988 1988 1987 1987 1981 1961 1969 1984 1978 1986 1976 1988
Lowest Mean Max. Temperature (F) 52.2 52.7 59.6 56.5 67.9 77.8 87.2 83.8 78.6 71.2 58.8 50.8 71.0
Year Lowest Occurred 1969 1969 1975 1967 1977 1969 1966 1976 1986 1972 1973 1972 1963
Mean Temperature (F) 47.3 51.0 52.9 57.1 62.9 68.7 72.2 71.7 69.1 63.1 53.9 47.3 59.8
Highest Mean Temperature (F) 51.1 56.6 58.1 63.3 67.8 74.1 76.4 74.0 74.9 67.2 58.9 51.2 61.6
Year Highest Occurred 1986 1963 1988 1987 1987 1981 1961 1969 1984 1965 1967 1969 1988
Lowest Mean Temperature (F) 43.6 45.3 49.0 46.9 56.3 64.0 69.2 68.4 64.0 58.3 50.7 42.3 58.1
Year Lowest Occurred 1969 1969 1967 1967 1977 1965 1965 1976 1986 1984 1985 1972 1975
Mean Min. Temperature (F) 36.9 40.2 41.6 44.1 48.1 52.4 53.5 53.3 51.9 48.2 42.7 37.4 45.9
Highest Mean Min. Temperature (F) 42.8 46.8 46.7 51.0 51.9 57.1 57.3 56.3 56.4 51.8 46.4 43.3 47.8
Year Highest Occurred 1978 1963 1978 1990 1987 1981 1961 1990 1983 1987 1981 1981 1983
Lowest Mean Min. Temperature (F) 33.5 36.1 36.9 37.2 44.4 49.3 50.5 49.2 47.8 42.6 38.6 32.6 44.1
Year Lowest Occurred 1963 1964 1976 1967 1964 1972 1962 1973 1965 1971 1978 1990 1971
Mean Precipitation (in.) 8.98 6.67 6.06 2.54 0.61 0.18 0.06 0.18 0.61 2.71 6.86 7.54 43.00
Highest Precipitation (in.) 25.72 22.13 20.76 7.91 5.24 2.12 1.35 1.49 3.31 12.24 19.67 18.22 93.78
Year Highest Occurred 1970 1986 1983 1965 1990 1967 1974 1983 1977 1962 1973 1969 1983
Lowest Precipitation (in.) 0.53 0.33 0.16 0.15 0.00 0.00 0.00 0.00 0.00 0.00 0.19 0.00 14.51
Year Lowest Occurred 1976 1971 1988 1977 1976 1987 1990 1990 1988 1978 1986 1989 1976
Heating Degree Days (F) 549. 392. 375. 267. 113. 28. 0. 0. 25. 115. 333. 549. 2746.
Cooling Degree Days (F) 0. 0. 0. 30. 48. 139. 226. 210. 148. 56. 0. 0. 857.

Western Regional Climate Center, wrcc@dri.edu