CASCADIA STATE PARK, OREGON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 45.8 50.6 54.9 59.4 65.0 70.7 78.1 79.3 74.5 64.1 51.0 44.4 61.5
Highest Mean Max. Temperature (F) 51.0 57.1 62.0 65.7 73.8 75.8 86.0 84.2 83.1 72.6 57.7 49.8 86.0
Year Highest Occurred 1981 1992 1992 1987 1992 1992 1985 1977 1974 1987 1976 1979 1985
Lowest Mean Max. Temperature (F) 40.3 43.4 48.5 53.3 59.0 65.5 70.4 73.5 66.7 57.3 41.0 38.6 38.6
Year Lowest Occurred 1979 1989 1971 1975 1991 1971 1993 1975 1986 1984 1985 1990 1990
Mean Temperature (F) 38.7 41.9 44.9 48.5 53.4 58.6 63.5 63.6 59.2 51.4 43.4 38.4 50.5
Highest Mean Temperature (F) 43.4 46.7 48.9 52.2 58.3 62.8 67.4 67.3 63.4 55.6 47.3 42.5 67.4
Year Highest Occurred 1995 1992 1986 1992 1992 1992 1985 1977 1974 1988 1995 1977 1985
Lowest Mean Temperature (F) 31.9 34.4 40.9 43.7 49.7 55.3 59.9 59.8 54.6 48.8 35.6 32.1 31.9
Year Lowest Occurred 1979 1989 1971 1975 1974 1976 1993 1975 1985 1984 1985 1990 1979
Mean Min. Temperature (F) 31.6 33.1 34.8 37.5 41.8 46.4 48.9 47.9 43.8 38.6 35.7 32.3 39.4
Highest Mean Min. Temperature (F) 37.4 37.4 38.4 41.9 44.9 49.7 53.0 52.1 48.4 44.0 40.6 37.3 53.0
Year Highest Occurred 1998 1983 1984 1992 1993 1992 1998 1999 1995 1988 1995 1977 1998
Lowest Mean Min. Temperature (F) 23.5 25.3 30.9 33.5 38.1 42.2 46.5 43.2 38.4 33.5 28.1 25.2 23.5
Year Lowest Occurred 1979 1989 1985 1982 1974 1976 1977 1980 1999 1974 1993 1985 1979
Mean Precipitation (in.) 8.24 6.97 6.93 5.83 4.70 3.08 0.98 1.37 2.44 4.82 9.97 9.29 64.62
Highest Precipitation (in.) 14.20 14.36 12.30 10.57 9.94 8.39 4.33 4.84 6.34 9.59 19.43 20.68 20.68
Year Highest Occurred 1971 1986 1989 1993 1977 1984 1983 1978 1986 1990 1973 1996 1996
Lowest Precipitation (in.) 0.67 2.27 2.25 1.66 0.78 0.99 0.00 0.00 0.00 0.10 2.64 2.61 0.00
Year Lowest Occurred 1985 1973 1992 1977 1992 1987 1984 1998 1993 1987 1976 1989 1984
Heating Degree Days (F) 817. 650. 624. 497. 360. 199. 91. 84. 188. 424. 650. 826. 5410.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 5. 44. 40. 12. 0. 0. 0. 101.

Western Regional Climate Center, wrcc@dri.edu