PORTERVILLE, CALIFORNIA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 56.4 63.7 68.8 75.9 84.7 92.8 98.3 96.8 91.1 81.8 67.5 56.6 77.9
Highest Mean Max. Temperature (F) 63.5 70.1 76.6 84.5 90.0 97.5 101.9 102.5 97.1 87.5 72.0 64.2 79.9
Year Highest Occurred 1986 1988 1972 1987 1984 1961 1967 1967 1974 1978 1980 1979 1988
Lowest Mean Max. Temperature (F) 48.7 57.9 61.9 61.8 75.1 86.9 93.7 89.4 85.8 75.9 59.8 48.0 75.0
Year Lowest Occurred 1972 1969 1973 1967 1977 1965 1987 1976 1986 1984 1972 1963 1963
Mean Temperature (F) 46.4 52.1 56.3 61.8 69.3 76.5 81.8 80.3 74.7 66.2 54.7 46.5 63.9
Highest Mean Temperature (F) 53.4 57.1 61.4 68.6 74.5 81.5 85.1 85.3 79.6 70.9 59.7 52.4 65.8
Year Highest Occurred 1986 1963 1972 1987 1973 1981 1988 1967 1984 1987 1967 1977 1981
Lowest Mean Temperature (F) 40.0 48.2 51.7 51.7 61.9 71.6 77.3 74.4 69.9 60.4 50.2 41.4 62.3
Year Lowest Occurred 1972 1971 1973 1967 1977 1965 1987 1968 1965 1969 1964 1963 1971
Mean Min. Temperature (F) 36.4 40.5 43.8 47.7 53.7 60.2 65.2 63.8 58.3 50.5 42.0 36.2 49.9
Highest Mean Min. Temperature (F) 43.3 46.6 49.5 52.9 59.1 65.5 69.9 68.0 64.5 55.5 47.8 42.1 52.3
Year Highest Occurred 1986 1963 1986 1989 1973 1981 1985 1967 1984 1987 1967 1977 1981
Lowest Mean Min. Temperature (F) 29.6 35.4 37.9 41.6 48.7 56.3 60.8 55.5 52.2 42.9 37.0 29.2 47.8
Year Lowest Occurred 1963 1964 1977 1967 1977 1980 1987 1968 1968 1969 1971 1990 1964
Mean Precipitation (in.) 1.90 1.83 1.83 1.09 0.37 0.06 0.02 0.03 0.40 0.62 1.43 1.45 11.03
Highest Precipitation (in.) 7.92 6.55 5.32 4.78 2.93 0.46 0.17 0.26 3.24 2.55 3.39 5.60 20.00
Year Highest Occurred 1969 1962 1978 1967 1971 1963 1982 1977 1976 1972 1970 1966 1978
Lowest Precipitation (in.) 0.03 0.10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5.25
Year Lowest Occurred 1976 1977 1972 1977 1986 1990 1990 1990 1989 1990 1962 1989 1989
Heating Degree Days (F) 577. 361. 277. 175. 38. 0. 0. 0. 0. 63. 309. 574. 2374.
Cooling Degree Days (F) 0. 0. 8. 79. 171. 349. 521. 474. 296. 100. 0. 0. 1998.

Western Regional Climate Center, wrcc@dri.edu