STOCKTON WSO, 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 60.7 65.5 72.9 81.6 89.1 94.4 92.9 87.9 78.3 63.4 52.8 74.4
Highest Mean Max. Temperature (F) 59.0 66.2 73.8 80.9 87.2 98.4 98.5 98.5 95.1 84.1 69.3 60.4 77.2
Year Highest Occurred 1976 1988 1972 1977 1984 1981 1961 1967 1979 1978 1986 1976 1981
Lowest Mean Max. Temperature (F) 47.5 52.5 60.4 58.9 75.3 83.7 87.7 87.5 79.8 73.2 56.9 43.1 71.4
Year Lowest Occurred 1972 1969 1975 1967 1977 1969 1987 1976 1986 1969 1972 1963 1963
Mean Temperature (F) 45.0 50.5 54.1 59.3 66.7 73.3 77.7 76.8 72.7 64.6 53.0 45.0 61.6
Highest Mean Temperature (F) 51.0 55.5 59.8 65.3 71.3 80.5 81.8 81.2 77.8 68.3 56.2 50.3 63.5
Year Highest Occurred 1986 1963 1972 1977 1973 1981 1984 1967 1979 1978 1976 1977 1981
Lowest Mean Temperature (F) 40.6 46.4 49.7 50.1 62.8 69.5 72.8 72.9 67.1 60.5 49.6 39.2 59.8
Year Lowest Occurred 1972 1969 1985 1967 1961 1965 1987 1968 1986 1969 1982 1963 1985
Mean Min. Temperature (F) 37.0 40.3 42.6 45.7 51.8 57.5 60.9 60.7 57.5 50.8 42.7 37.1 48.7
Highest Mean Min. Temperature (F) 44.5 46.9 48.9 50.9 56.0 62.5 65.4 64.5 61.8 54.7 46.3 43.7 50.7
Year Highest Occurred 1986 1968 1978 1990 1987 1981 1984 1983 1983 1987 1970 1983 1983
Lowest Mean Min. Temperature (F) 31.1 33.0 36.7 40.1 47.9 53.9 56.8 57.6 53.3 46.8 38.6 29.7 46.8
Year Lowest Occurred 1976 1964 1985 1976 1964 1982 1963 1985 1964 1981 1975 1990 1982
Mean Precipitation (in.) 2.84 1.97 2.17 1.08 0.26 0.08 0.06 0.07 0.35 0.79 2.17 2.11 13.95
Highest Precipitation (in.) 7.06 6.00 6.48 3.12 2.33 0.66 0.61 0.81 2.47 2.22 6.22 5.33 26.65
Year Highest Occurred 1970 1962 1982 1963 1990 1964 1974 1975 1982 1982 1972 1964 1983
Lowest Precipitation (in.) 0.14 0.05 0.07 0.07 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.03 5.60
Year Lowest Occurred 1976 1964 1972 1989 1985 1990 1990 1990 1990 1978 1986 1989 1976
Heating Degree Days (F) 620. 406. 341. 211. 53. 7. 0. 0. 10. 79. 360. 620. 2707.
Cooling Degree Days (F) 0. 0. 0. 40. 106. 256. 394. 366. 241. 67. 0. 0. 1470.

Western Regional Climate Center, wrcc@dri.edu