CONNELL 1 W, WASHINGTON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 37.2 46.4 55.9 64.6 74.0 82.6 90.0 88.7 79.1 65.3 47.6 37.5 64.1
Highest Mean Max. Temperature (F) 46.2 53.8 60.1 72.5 79.5 89.6 95.9 97.7 87.4 72.4 52.0 44.7 67.4
Year Highest Occurred 1967 1968 1968 1977 1966 1961 1985 1967 1967 1965 1990 1974 1967
Lowest Mean Max. Temperature (F) 21.3 33.4 50.9 58.5 67.9 76.4 84.4 82.7 72.0 61.4 31.7 22.8 60.2
Year Lowest Occurred 1979 1989 1971 1967 1962 1971 1986 1968 1985 1990 1985 1985 1985
Mean Temperature (F) 30.5 37.5 44.1 50.6 58.5 66.3 72.4 71.4 62.8 51.3 39.6 31.2 51.4
Highest Mean Temperature (F) 39.0 43.0 47.8 55.8 62.2 71.4 76.7 77.4 69.0 56.9 44.1 37.8 53.4
Year Highest Occurred 1967 1961 1986 1987 1987 1970 1985 1961 1967 1988 1983 1966 1967
Lowest Mean Temperature (F) 14.0 25.2 40.1 46.0 54.0 62.3 67.9 66.5 58.3 48.3 25.0 18.6 48.0
Year Lowest Occurred 1979 1989 1971 1967 1962 1980 1963 1964 1985 1984 1985 1985 1985
Mean Min. Temperature (F) 23.8 28.6 32.3 36.5 43.0 49.9 54.9 54.0 46.4 37.3 31.5 24.9 38.6
Highest Mean Min. Temperature (F) 32.4 34.6 37.7 41.2 46.5 54.0 59.2 59.0 50.5 42.5 37.2 32.1 40.5
Year Highest Occurred 1981 1961 1986 1987 1987 1970 1975 1961 1967 1988 1983 1973 1986
Lowest Mean Min. Temperature (F) 6.7 16.9 26.8 31.1 37.4 43.9 49.7 49.5 42.9 33.4 18.3 14.3 35.7
Year Lowest Occurred 1979 1989 1965 1964 1964 1964 1963 1964 1961 1961 1985 1985 1985
Mean Precipitation (in.) 0.86 0.79 0.82 0.64 0.71 0.43 0.27 0.34 0.37 0.64 1.16 1.22 8.25
Highest Precipitation (in.) 2.71 2.67 2.32 1.62 2.07 1.18 1.37 1.68 1.48 1.81 3.14 3.21 11.70
Year Highest Occurred 1970 1961 1983 1963 1980 1984 1978 1977 1980 1982 1973 1973 1980
Lowest Precipitation (in.) 0.04 0.01 0.03 0.03 0.00 0.02 0.00 0.00 0.00 0.00 0.12 0.28 4.87
Year Lowest Occurred 1972 1988 1965 1964 1966 1986 1984 1988 1990 1987 1976 1976 1965
Heating Degree Days (F) 1070. 770. 648. 432. 212. 69. 8. 25. 133. 425. 762. 1048. 5602.
Cooling Degree Days (F) 0. 0. 0. 0. 11. 108. 238. 223. 67. 0. 0. 0. 647.

Western Regional Climate Center, wrcc@dri.edu