CLEARBROOK, WASHINGTON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 42.2 47.7 52.7 58.7 65.2 70.4 75.2 75.7 69.8 59.5 48.9 42.6 59.1
Highest Mean Max. Temperature (F) 50.8 54.1 56.6 63.7 69.8 75.5 82.5 83.3 76.1 65.7 53.2 47.8 61.7
Year Highest Occurred 1961 1968 1979 1989 1983 1982 1985 1967 1974 1987 1962 1962 1987
Lowest Mean Max. Temperature (F) 28.7 40.1 47.3 53.4 59.7 64.3 70.7 69.5 65.0 55.9 36.9 35.5 57.4
Year Lowest Occurred 1969 1989 1976 1972 1962 1971 1986 1976 1978 1984 1985 1984 1975
Mean Temperature (F) 36.5 40.8 44.0 48.7 54.4 59.3 62.9 62.9 58.0 50.3 42.5 37.2 49.8
Highest Mean Temperature (F) 43.5 45.6 47.7 52.8 57.8 62.6 66.5 66.1 62.7 53.6 46.6 42.5 51.6
Year Highest Occurred 1986 1963 1983 1989 1972 1969 1990 1990 1963 1988 1987 1979 1987
Lowest Mean Temperature (F) 23.8 32.7 39.7 45.1 51.0 54.9 60.5 58.9 54.3 47.4 31.0 31.3 48.0
Year Lowest Occurred 1969 1989 1976 1975 1962 1971 1986 1973 1972 1972 1985 1984 1985
Mean Min. Temperature (F) 30.8 33.8 35.3 38.6 43.5 48.2 50.4 50.1 46.3 41.1 36.1 31.7 40.5
Highest Mean Min. Temperature (F) 37.6 37.9 39.4 41.8 46.9 51.2 53.5 53.2 50.9 46.2 40.5 37.4 42.4
Year Highest Occurred 1986 1987 1986 1989 1990 1990 1990 1990 1963 1988 1987 1979 1981
Lowest Mean Min. Temperature (F) 18.8 25.3 30.7 34.1 39.4 44.9 48.1 45.8 42.3 36.1 25.0 25.2 38.2
Year Lowest Occurred 1969 1989 1962 1975 1964 1965 1973 1973 1961 1987 1985 1964 1985
Mean Precipitation (in.) 5.27 4.50 4.00 3.51 3.04 2.43 1.77 1.87 2.98 4.51 6.10 5.80 45.78
Highest Precipitation (in.) 10.15 10.73 7.83 7.16 6.72 8.30 5.25 5.51 7.30 10.45 12.85 11.06 62.51
Year Highest Occurred 1967 1982 1972 1972 1984 1981 1964 1962 1969 1967 1990 1972 1972
Lowest Precipitation (in.) 1.18 0.91 1.06 1.60 1.39 0.63 0.07 0.02 0.19 0.53 2.19 0.76 28.04
Year Lowest Occurred 1985 1989 1965 1975 1982 1965 1985 1986 1989 1987 1979 1985 1987
Heating Degree Days (F) 884. 678. 651. 489. 329. 180. 85. 100. 217. 456. 675. 862. 5606.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 9. 20. 35. 7. 0. 0. 0. 71.

Western Regional Climate Center, wrcc@dri.edu