OAKVILLE, WASHINGTON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 46.6 51.0 55.5 60.2 66.3 71.4 76.6 77.2 72.2 62.6 52.3 45.9 61.5
Highest Mean Max. Temperature (F) 53.1 57.8 60.3 67.5 73.0 76.7 85.1 84.7 79.0 68.4 55.5 50.2 63.9
Year Highest Occurred 1961 1968 1986 1989 1983 1982 1985 1967 1967 1987 1966 1980 1987
Lowest Mean Max. Temperature (F) 38.5 44.3 50.3 55.7 59.0 65.5 70.7 69.9 67.6 56.5 43.1 40.2 59.1
Year Lowest Occurred 1969 1989 1971 1964 1962 1971 1963 1976 1985 1984 1985 1990 1964
Mean Temperature (F) 39.8 42.4 45.1 48.5 53.9 59.1 63.2 63.8 59.1 51.4 44.6 39.7 50.9
Highest Mean Temperature (F) 44.6 47.8 50.3 53.6 59.8 63.4 68.1 68.5 63.1 54.6 48.0 44.8 52.8
Year Highest Occurred 1983 1963 1986 1989 1983 1982 1985 1986 1963 1988 1965 1980 1987
Lowest Mean Temperature (F) 33.1 34.4 41.3 44.6 50.8 54.7 60.5 59.0 55.1 48.1 34.9 34.6 49.1
Year Lowest Occurred 1969 1989 1971 1975 1977 1971 1977 1969 1970 1984 1985 1983 1985
Mean Min. Temperature (F) 32.9 33.9 34.6 36.8 41.5 46.8 49.8 50.2 46.0 40.2 36.8 33.5 40.3
Highest Mean Min. Temperature (F) 38.3 39.7 40.2 40.4 46.5 51.8 53.0 53.0 51.6 46.0 40.4 39.4 42.2
Year Highest Occurred 1983 1963 1986 1990 1983 1969 1990 1977 1963 1988 1965 1980 1983
Lowest Mean Min. Temperature (F) 24.6 24.4 29.4 32.7 38.1 43.6 47.0 43.9 41.5 35.5 26.6 27.9 38.0
Year Lowest Occurred 1979 1989 1969 1975 1970 1976 1977 1969 1970 1972 1985 1978 1985
Mean Precipitation (in.) 9.10 6.65 6.03 3.86 2.46 2.07 0.88 1.39 2.62 4.91 8.68 9.32 57.97
Highest Precipitation (in.) 16.81 12.32 11.71 7.20 5.79 4.96 2.96 5.09 7.37 12.90 16.76 17.86 71.93
Year Highest Occurred 1976 1979 1967 1981 1984 1984 1983 1968 1978 1967 1973 1970 1968
Lowest Precipitation (in.) 0.36 1.45 0.58 1.16 0.14 0.13 0.00 0.00 0.00 0.47 2.06 1.32 37.63
Year Lowest Occurred 1985 1964 1965 1977 1982 1987 1984 1986 1975 1987 1976 1985 1985
Heating Degree Days (F) 781. 633. 617. 495. 344. 189. 88. 101. 185. 422. 612. 784. 5251.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 12. 32. 64. 8. 0. 0. 0. 116.

Western Regional Climate Center, wrcc@dri.edu