CASCADIA STATE PARK, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 45.3 50.7 54.3 59.1 64.5 71.1 78.1 79.3 74.0 64.0 51.6 44.7 61.4
Highest Mean Max. Temperature (F) 52.1 58.6 60.7 65.7 68.2 78.6 86.0 87.0 83.1 72.6 57.7 49.8 63.6
Year Highest Occurred 1961 1963 1986 1987 1983 1961 1985 1967 1974 1987 1976 1979 1961
Lowest Mean Max. Temperature (F) 37.0 43.4 48.5 52.6 53.6 65.5 70.9 74.1 66.7 57.3 41.0 38.6 58.8
Year Lowest Occurred 1969 1989 1971 1967 1965 1971 1983 1989 1986 1984 1985 1990 1971
Mean Temperature (F) 38.2 41.7 44.4 48.0 52.8 58.8 63.3 63.7 58.8 51.3 43.7 38.5 50.3
Highest Mean Temperature (F) 42.6 47.4 48.9 52.0 56.3 63.8 68.0 68.7 64.6 55.6 47.1 42.5 51.6
Year Highest Occurred 1981 1963 1986 1989 1969 1961 1974 1974 1963 1988 1976 1977 1961
Lowest Mean Temperature (F) 31.9 34.4 40.5 43.1 46.0 55.3 60.0 60.5 54.6 48.8 35.6 32.1 48.5
Year Lowest Occurred 1979 1989 1965 1967 1965 1976 1986 1980 1985 1984 1985 1990 1985
Mean Min. Temperature (F) 31.0 32.7 34.4 36.9 41.0 46.5 48.5 47.9 43.6 38.5 35.8 32.2 39.1
Highest Mean Min. Temperature (F) 36.5 37.4 38.4 39.7 44.4 52.1 57.8 55.7 48.3 44.0 39.1 37.3 40.9
Year Highest Occurred 1978 1983 1984 1989 1969 1969 1974 1974 1963 1988 1983 1977 1983
Lowest Mean Min. Temperature (F) 22.4 25.3 30.5 33.5 36.4 42.2 44.2 43.2 38.3 33.5 29.1 25.2 36.6
Year Lowest Occurred 1963 1989 1965 1982 1964 1976 1962 1980 1965 1974 1978 1985 1985
Mean Precipitation (in.) 8.51 6.67 6.89 5.19 4.09 2.74 0.88 1.45 2.65 4.88 9.39 9.25 62.59
Highest Precipitation (in.) 15.82 15.83 12.30 8.61 9.94 8.39 4.33 5.35 6.34 9.59 19.43 20.65 81.67
Year Highest Occurred 1965 1961 1989 1972 1977 1984 1983 1968 1986 1990 1973 1964 1984
Lowest Precipitation (in.) 0.67 2.27 1.54 1.66 0.90 0.70 0.00 0.00 0.00 0.10 2.64 2.61 45.02
Year Lowest Occurred 1985 1973 1965 1977 1982 1965 1984 1988 1975 1987 1976 1989 1987
Heating Degree Days (F) 831. 652. 639. 510. 378. 193. 88. 90. 201. 425. 639. 822. 5468.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 7. 35. 50. 15. 0. 0. 0. 107.

Western Regional Climate Center, wrcc@dri.edu