PROSPECT 2 SW, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 46.7 51.9 55.4 61.6 70.0 78.4 86.8 86.8 80.4 68.9 52.0 45.6 65.4
Highest Mean Max. Temperature (F) 53.9 60.3 62.8 70.9 76.7 84.8 91.0 95.2 89.6 80.7 59.8 54.1 68.7
Year Highest Occurred 1981 1988 1986 1987 1969 1987 1972 1967 1974 1987 1976 1989 1987
Lowest Mean Max. Temperature (F) 39.5 44.7 49.5 51.3 61.6 71.7 78.2 78.7 69.8 58.8 44.6 39.1 62.9
Year Lowest Occurred 1969 1979 1971 1967 1977 1980 1983 1976 1978 1984 1985 1972 1983
Mean Temperature (F) 37.2 40.8 43.2 47.4 54.1 61.3 67.1 66.9 61.1 52.7 42.4 37.1 50.9
Highest Mean Temperature (F) 43.9 46.1 48.7 53.7 58.5 66.0 70.9 72.4 66.0 60.2 46.4 40.8 53.2
Year Highest Occurred 1986 1963 1986 1987 1973 1986 1985 1967 1967 1988 1976 1989 1987
Lowest Mean Temperature (F) 33.0 35.3 39.3 40.8 49.1 57.5 62.2 63.5 55.1 47.5 36.1 31.1 48.9
Year Lowest Occurred 1969 1989 1971 1967 1977 1980 1963 1975 1986 1984 1985 1972 1971
Mean Min. Temperature (F) 27.6 29.6 31.1 33.1 38.1 44.1 47.4 47.0 41.8 36.5 32.6 28.6 36.5
Highest Mean Min. Temperature (F) 34.8 34.8 35.8 38.3 41.3 49.0 51.1 51.3 46.8 42.1 36.4 34.1 38.4
Year Highest Occurred 1986 1963 1983 1990 1963 1986 1990 1977 1963 1979 1970 1981 1986
Lowest Mean Min. Temperature (F) 20.7 23.8 27.3 29.3 35.5 38.5 41.5 42.9 36.6 32.8 27.2 22.8 34.1
Year Lowest Occurred 1963 1989 1985 1964 1982 1962 1962 1980 1961 1974 1978 1990 1962
Mean Precipitation (in.) 5.98 4.67 4.62 2.76 2.21 1.01 0.38 0.99 1.44 3.31 6.84 6.83 41.04
Highest Precipitation (in.) 11.82 12.30 9.46 5.59 5.98 2.76 3.54 5.99 7.17 8.62 16.69 23.68 57.78
Year Highest Occurred 1970 1986 1989 1963 1977 1984 1987 1976 1986 1962 1973 1964 1983
Lowest Precipitation (in.) 0.67 0.90 0.52 0.81 0.09 0.19 0.00 0.00 0.00 0.00 1.00 0.69 25.55
Year Lowest Occurred 1985 1988 1965 1987 1982 1977 1988 1987 1987 1987 1976 1976 1985
Heating Degree Days (F) 862. 678. 676. 528. 338. 144. 45. 52. 163. 387. 678. 865. 5416.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 33. 110. 111. 46. 6. 0. 0. 306.

Western Regional Climate Center, wrcc@dri.edu