FORT ROSS, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 56.3 57.9 58.1 59.2 61.4 63.8 65.4 66.2 67.3 65.3 60.6 56.6 61.5
Highest Mean Max. Temperature (F) 60.2 62.8 63.3 65.9 65.8 68.7 69.8 71.0 73.1 69.3 66.3 59.9 63.9
Year Highest Occurred 1981 1988 1978 1987 1984 1981 1983 1983 1984 1967 1990 1980 1990
Lowest Mean Max. Temperature (F) 53.0 53.4 54.8 53.7 58.0 59.6 61.0 62.2 63.5 61.7 55.8 52.9 58.3
Year Lowest Occurred 1969 1969 1973 1975 1974 1975 1962 1973 1962 1975 1973 1972 1975
Mean Temperature (F) 48.3 49.8 50.1 50.5 52.7 55.3 56.6 57.5 57.8 55.9 52.0 48.6 52.9
Highest Mean Temperature (F) 52.9 53.9 55.7 53.9 55.9 60.3 60.0 60.9 61.1 59.2 55.0 52.9 55.4
Year Highest Occurred 1981 1963 1978 1989 1987 1981 1988 1983 1983 1965 1967 1969 1983
Lowest Mean Temperature (F) 44.4 45.6 46.3 46.8 50.2 53.3 53.9 53.6 53.2 52.1 45.3 43.1 51.1
Year Lowest Occurred 1988 1989 1976 1975 1964 1965 1986 1986 1986 1971 1985 1987 1975
Mean Min. Temperature (F) 40.2 41.7 42.0 41.7 43.9 46.7 47.7 48.8 48.3 46.5 43.4 40.5 44.3
Highest Mean Min. Temperature (F) 46.0 47.7 48.1 45.1 47.1 51.9 51.2 52.5 51.9 50.1 47.9 46.5 47.0
Year Highest Occurred 1978 1968 1978 1965 1987 1981 1988 1981 1983 1987 1965 1969 1983
Lowest Mean Min. Temperature (F) 30.9 33.9 37.4 33.8 37.9 42.7 41.1 42.5 40.6 40.7 33.3 30.8 39.7
Year Lowest Occurred 1988 1987 1985 1987 1986 1986 1986 1986 1986 1985 1985 1987 1986
Mean Precipitation (in.) 7.21 5.32 5.30 2.34 0.67 0.25 0.14 0.29 0.69 2.63 6.03 6.06 36.93
Highest Precipitation (in.) 18.42 12.37 19.65 6.43 5.91 2.67 2.53 2.15 2.66 7.23 18.15 15.02 71.27
Year Highest Occurred 1970 1975 1983 1963 1990 1967 1974 1976 1989 1962 1973 1981 1983
Lowest Precipitation (in.) 0.52 0.33 0.39 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.67 0.00 17.98
Year Lowest Occurred 1984 1964 1988 1964 1982 1983 1989 1988 1988 1978 1990 1989 1976
Heating Degree Days (F) 518. 426. 462. 435. 381. 291. 260. 233. 220. 282. 390. 508. 4406.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.

Western Regional Climate Center, wrcc@dri.edu