MOUNT HEBRON RNG STN, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 40.7 46.9 51.8 58.6 65.6 74.0 83.0 82.2 74.9 64.8 49.2 41.8 61.1
Highest Mean Max. Temperature (F) 48.1 56.5 64.2 71.2 73.0 82.3 88.3 90.0 82.1 74.6 58.7 47.9 65.8
Year Highest Occurred 1986 1988 1988 1987 1987 1986 1988 1988 1974 1988 1976 1981 1987
Lowest Mean Max. Temperature (F) 35.5 38.5 43.2 44.8 54.7 66.3 77.5 71.4 66.8 54.6 41.1 33.4 57.4
Year Lowest Occurred 1969 1969 1975 1967 1977 1980 1963 1976 1986 1989 1985 1967 1975
Mean Temperature (F) 27.9 33.2 37.4 42.3 48.9 56.5 62.7 61.7 54.4 46.0 35.1 29.1 44.6
Highest Mean Temperature (F) 35.9 42.0 44.2 50.4 54.2 62.8 67.0 66.2 58.5 52.3 40.4 36.3 47.7
Year Highest Occurred 1986 1986 1984 1987 1987 1986 1985 1986 1975 1988 1976 1981 1987
Lowest Mean Temperature (F) 20.5 25.0 32.1 33.4 42.8 51.8 58.3 56.5 50.2 40.9 27.4 19.8 42.8
Year Lowest Occurred 1977 1989 1964 1967 1977 1980 1966 1976 1986 1969 1985 1967 1971
Mean Min. Temperature (F) 15.1 19.6 23.0 25.9 32.2 39.0 42.3 41.1 33.9 27.1 20.9 16.3 28.0
Highest Mean Min. Temperature (F) 23.6 28.9 30.1 31.6 36.8 44.1 46.6 46.5 39.3 32.6 28.1 24.7 30.8
Year Highest Occurred 1986 1963 1983 1965 1963 1977 1985 1961 1963 1979 1970 1981 1986
Lowest Mean Min. Temperature (F) 5.1 7.4 18.5 21.5 28.3 32.3 37.4 37.7 28.4 19.7 12.9 6.1 25.4
Year Lowest Occurred 1977 1989 1969 1964 1988 1988 1966 1969 1972 1972 1972 1967 1972
Mean Precipitation (in.) 1.41 1.13 1.12 0.76 0.95 0.93 0.33 0.55 0.57 1.04 1.89 1.91 12.59
Highest Precipitation (in.) 3.87 4.29 3.02 2.69 3.55 2.28 1.80 3.21 2.76 4.81 5.74 8.07 19.85
Year Highest Occurred 1970 1986 1989 1965 1971 1964 1987 1976 1985 1962 1981 1964 1981
Lowest Precipitation (in.) 0.01 0.01 0.04 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.26 0.07 6.65
Year Lowest Occurred 1985 1964 1965 1987 1976 1973 1989 1987 1988 1965 1967 1989 1988
Heating Degree Days (F) 1150. 890. 856. 681. 499. 267. 108. 142. 324. 589. 897. 1113. 7516.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 12. 37. 40. 6. 0. 0. 0. 95.

Western Regional Climate Center, wrcc@dri.edu