SAN GABRIEL FIRE DEP, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 69.6 71.4 71.7 75.5 77.8 82.8 89.2 89.9 87.6 82.7 74.6 69.6 78.5
Highest Mean Max. Temperature (F) 78.0 78.4 79.1 83.1 87.2 91.9 93.0 93.6 96.5 88.4 81.0 75.9 81.2
Year Highest Occurred 1961 1977 1988 1987 1984 1981 1984 1981 1984 1990 1976 1976 1984
Lowest Mean Max. Temperature (F) 64.1 62.7 65.9 65.8 72.7 74.2 85.2 87.0 81.3 77.4 69.8 61.7 76.2
Year Lowest Occurred 1974 1962 1973 1967 1980 1965 1987 1975 1965 1979 1965 1971 1965
Mean Temperature (F) 55.7 57.6 58.9 62.1 65.6 70.1 75.2 76.1 73.7 68.4 60.6 55.6 65.0
Highest Mean Temperature (F) 62.6 62.0 63.6 68.0 72.0 77.0 79.5 80.1 82.0 72.1 64.2 60.2 67.4
Year Highest Occurred 1986 1963 1988 1989 1984 1981 1984 1983 1984 1987 1976 1980 1984
Lowest Mean Temperature (F) 52.4 52.2 53.9 54.2 61.3 64.5 71.5 72.6 68.3 65.1 57.8 50.2 62.9
Year Lowest Occurred 1979 1969 1962 1967 1977 1965 1962 1975 1965 1969 1971 1971 1975
Mean Min. Temperature (F) 41.7 43.8 45.9 48.7 53.4 57.4 61.3 62.2 59.8 54.1 46.5 41.5 51.4
Highest Mean Min. Temperature (F) 48.5 49.2 51.1 54.5 56.7 62.1 66.0 66.6 67.5 59.6 51.5 47.1 53.8
Year Highest Occurred 1980 1963 1978 1989 1987 1981 1984 1984 1984 1987 1967 1977 1983
Lowest Mean Min. Temperature (F) 37.7 38.6 40.3 42.5 49.2 54.3 57.2 58.1 55.3 49.4 43.7 37.7 49.4
Year Lowest Occurred 1972 1964 1977 1967 1964 1967 1962 1975 1965 1971 1964 1978 1975
Mean Precipitation (in.) 3.65 3.84 3.24 1.21 0.23 0.07 0.01 0.11 0.54 0.49 2.22 2.29 17.90
Highest Precipitation (in.) 18.16 17.50 13.34 6.77 2.97 0.38 0.14 1.06 3.86 3.40 12.12 6.85 43.85
Year Highest Occurred 1969 1980 1983 1965 1977 1987 1987 1983 1976 1987 1965 1971 1983
Lowest Precipitation (in.) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 7.08
Year Lowest Occurred 1976 1984 1972 1985 1986 1990 1990 1989 1980 1990 1980 1963 1989
Heating Degree Days (F) 293. 216. 204. 142. 69. 29. 0. 0. 12. 27. 145. 296. 1433.
Cooling Degree Days (F) 0. 9. 15. 55. 87. 182. 316. 344. 273. 133. 13. 0. 1427.

Western Regional Climate Center, wrcc@dri.edu