GLENOMA 1 W, WASHINGTON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 44.1 48.8 53.0 58.4 64.9 70.4 76.7 77.7 72.3 61.6 49.3 43.9 60.1
Highest Mean Max. Temperature (F) 53.2 55.1 60.0 63.1 71.8 76.8 85.1 84.2 78.9 72.3 55.9 47.5 85.1
Year Highest Occurred 1981 1992 1992 1989 1992 1992 1985 1986 1974 1987 1976 1979 1985
Lowest Mean Max. Temperature (F) 39.3 42.8 46.7 52.6 59.5 63.9 68.8 70.0 66.2 56.7 40.4 35.0 35.0
Year Lowest Occurred 1979 1979 1971 1972 1974 1971 1993 1976 1978 1984 1985 1990 1990
Mean Temperature (F) 37.5 40.6 43.7 47.8 53.7 58.6 63.5 63.6 58.6 50.1 42.1 37.5 49.8
Highest Mean Temperature (F) 45.7 45.7 47.9 51.1 57.9 62.1 67.5 67.5 63.2 55.1 46.7 42.2 67.5
Year Highest Occurred 1981 1992 1986 1987 1993 1992 1985 1986 1974 1987 1987 1979 1985
Lowest Mean Temperature (F) 32.6 34.0 38.6 43.1 50.1 54.7 59.6 60.2 54.4 47.4 33.6 29.5 29.5
Year Lowest Occurred 1980 1989 1971 1975 1999 1971 1993 1995 1972 1984 1985 1990 1990
Mean Min. Temperature (F) 30.9 32.3 34.4 37.2 42.5 46.8 50.2 49.5 44.9 38.6 34.8 31.0 39.4
Highest Mean Min. Temperature (F) 38.2 36.8 38.2 41.3 46.3 49.5 53.5 53.0 49.4 43.3 38.9 37.0 53.5
Year Highest Occurred 1981 1983 1983 1996 1993 1978 1998 1977 1979 1988 1987 1979 1998
Lowest Mean Min. Temperature (F) 25.9 24.5 30.5 32.6 38.9 44.0 47.2 44.3 39.9 34.9 26.4 24.1 24.1
Year Lowest Occurred 1980 1989 1971 1975 1999 1994 1999 2000 1993 1994 1993 1990 1990
Mean Precipitation (in.) 9.39 7.44 6.60 5.40 3.89 3.02 1.32 1.42 3.03 5.08 10.07 10.49 67.15
Highest Precipitation (in.) 16.95 14.84 14.05 9.89 8.34 8.66 5.58 4.96 5.96 10.78 16.06 20.63 20.63
Year Highest Occurred 1975 1996 1997 1991 1984 1981 1983 1976 1972 1996 1988 1977 1977
Lowest Precipitation (in.) 0.69 0.14 1.29 2.41 1.16 0.93 0.02 0.00 0.07 0.23 2.34 2.21 0.00
Year Lowest Occurred 1985 1993 1992 1998 1992 1979 1984 1998 1993 1987 1976 1985 1998
Heating Degree Days (F) 853. 684. 661. 515. 350. 199. 89. 90. 205. 461. 689. 854. 5650.
Cooling Degree Days (F) 0. 0. 0. 0. 1. 8. 41. 47. 14. 0. 0. 0. 111.

Western Regional Climate Center, wrcc@dri.edu