ELWHA RS, WASHINGTON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 40.7 45.4 50.4 55.8 62.6 68.0 73.0 74.1 67.6 57.0 46.4 41.7 56.9
Highest Mean Max. Temperature (F) 45.5 50.7 55.2 60.6 67.3 75.0 81.3 82.3 73.1 64.5 52.5 46.2 59.1
Year Highest Occurred 1981 1968 1981 1989 1969 1967 1985 1967 1974 1987 1976 1979 1967
Lowest Mean Max. Temperature (F) 30.4 33.8 43.8 50.7 58.9 61.1 61.5 68.1 62.8 52.4 37.5 35.5 54.8
Year Lowest Occurred 1969 1989 1989 1972 1986 1983 1986 1975 1978 1982 1985 1983 1983
Mean Temperature (F) 35.7 38.8 42.0 46.3 51.9 57.3 61.3 62.4 57.2 48.7 40.9 36.7 48.3
Highest Mean Temperature (F) 40.3 42.3 45.6 50.0 55.1 61.8 66.9 68.2 61.5 52.3 44.4 41.5 49.7
Year Highest Occurred 1986 1968 1986 1989 1969 1969 1985 1986 1974 1987 1987 1979 1987
Lowest Mean Temperature (F) 26.5 29.0 38.3 41.3 49.5 53.5 55.5 58.7 53.7 46.0 32.5 30.3 46.8
Year Lowest Occurred 1969 1989 1989 1972 1962 1976 1986 1975 1972 1984 1985 1983 1982
Mean Min. Temperature (F) 30.6 32.2 33.6 36.8 41.2 46.4 49.5 50.7 46.8 40.3 35.2 31.7 39.6
Highest Mean Min. Temperature (F) 35.9 36.2 38.0 40.9 43.4 51.1 53.0 54.5 49.9 44.0 39.2 36.8 41.4
Year Highest Occurred 1986 1961 1986 1990 1980 1969 1990 1986 1974 1988 1983 1979 1986
Lowest Mean Min. Temperature (F) 22.5 24.1 29.3 31.9 37.9 42.2 45.6 46.5 42.5 37.6 27.4 25.1 37.6
Year Lowest Occurred 1969 1989 1982 1972 1972 1976 1977 1973 1972 1961 1985 1983 1972
Mean Precipitation (in.) 8.83 6.64 5.95 3.11 1.89 1.16 0.71 1.06 1.88 5.04 8.90 9.67 54.84
Highest Precipitation (in.) 17.26 13.21 14.45 7.39 3.89 2.53 3.04 5.81 5.08 12.91 19.00 20.01 67.04
Year Highest Occurred 1964 1979 1971 1982 1984 1964 1963 1975 1972 1967 1983 1979 1990
Lowest Precipitation (in.) 0.70 2.39 0.86 1.00 0.37 0.22 0.01 0.00 0.02 0.15 0.80 1.96 32.79
Year Lowest Occurred 1985 1962 1965 1986 1972 1970 1970 1986 1975 1987 1976 1985 1985
Heating Degree Days (F) 908. 734. 713. 561. 406. 238. 149. 129. 239. 505. 723. 877. 6182.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 7. 35. 48. 0. 0. 0. 0. 90.

Western Regional Climate Center, wrcc@dri.edu