SALEM WSO AIRPORT, OREGON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 47.0 51.2 56.3 61.1 67.5 74.0 81.5 81.9 76.6 64.5 52.4 46.4 63.4
Highest Mean Max. Temperature (F) 51.6 57.6 63.2 66.8 77.0 81.0 87.8 86.8 84.8 72.4 57.5 51.8 87.8
Year Highest Occurred 1984 1991 1992 1989 1992 1992 1985 1986 1974 1987 1995 1979 1985
Lowest Mean Max. Temperature (F) 38.0 43.5 50.9 56.1 62.1 67.9 74.5 76.5 70.4 59.6 44.5 40.9 38.0
Year Lowest Occurred 1979 1989 1971 1975 1977 1980 1993 1975 1977 1975 1985 1990 1979
Mean Temperature (F) 40.3 43.0 46.5 50.0 55.6 61.2 66.8 67.0 62.2 52.9 45.2 40.2 52.6
Highest Mean Temperature (F) 44.5 48.7 50.5 54.6 60.8 65.8 70.3 70.1 65.8 56.6 51.1 44.8 70.3
Year Highest Occurred 1995 1991 1992 1989 1992 1992 1996 1977 1974 1988 1995 1979 1996
Lowest Mean Temperature (F) 31.2 34.8 41.9 45.3 51.8 56.9 63.2 62.8 57.6 50.1 37.3 33.3 31.2
Year Lowest Occurred 1979 1989 1971 1975 1977 1976 1993 1980 1972 1972 1985 1985 1979
Mean Min. Temperature (F) 33.5 34.7 36.6 38.8 43.6 48.4 52.0 52.1 47.7 41.3 37.9 33.9 41.7
Highest Mean Min. Temperature (F) 38.6 39.7 40.5 43.3 48.3 52.3 56.2 55.8 52.5 45.5 44.7 37.7 56.2
Year Highest Occurred 1998 1991 1983 1993 1993 1978 1998 1997 1997 1988 1995 1979 1998
Lowest Mean Min. Temperature (F) 24.4 26.0 32.1 33.0 40.2 43.4 48.8 46.3 43.1 36.7 30.1 24.4 24.4
Year Lowest Occurred 1979 1989 1985 1982 1971 1976 1984 1980 1972 1972 1985 1985 1979
Mean Precipitation (in.) 5.84 5.09 4.17 2.76 2.13 1.45 0.57 0.68 1.43 3.03 6.39 6.46 40.00
Highest Precipitation (in.) 10.89 13.01 8.56 5.72 5.56 4.19 2.63 2.56 3.98 7.96 15.23 15.01 15.23
Year Highest Occurred 1974 1996 1983 1996 1998 1984 1983 1978 1971 1994 1973 1996 1973
Lowest Precipitation (in.) 0.41 0.75 0.89 0.62 0.05 0.26 0.00 0.00 0.00 0.12 1.13 1.26 0.00
Year Lowest Occurred 1985 1988 1992 1977 1992 1987 1994 1988 1975 1988 1976 1976 1994
Heating Degree Days (F) 765. 623. 574. 452. 301. 141. 39. 34. 116. 376. 592. 771. 4784.
Cooling Degree Days (F) 0. 0. 0. 0. 7. 25. 95. 98. 31. 1. 0. 0. 257.

Western Regional Climate Center, wrcc@dri.edu