RIDDLE 2 NNE, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 48.4 54.3 58.3 62.7 69.0 76.2 82.9 83.2 78.2 68.0 54.2 47.8 65.3
Highest Mean Max. Temperature (F) 54.5 60.6 65.2 70.8 74.3 81.9 90.4 91.5 85.8 77.7 58.5 53.2 68.4
Year Highest Occurred 1986 1977 1986 1987 1987 1986 1985 1967 1974 1987 1976 1977 1987
Lowest Mean Max. Temperature (F) 42.5 47.8 52.5 55.0 62.9 70.5 76.2 77.6 72.7 62.5 48.4 42.6 62.5
Year Lowest Occurred 1963 1989 1975 1975 1977 1980 1983 1976 1986 1971 1985 1990 1971
Mean Temperature (F) 40.8 44.8 47.6 50.7 56.3 62.8 67.8 67.8 62.5 55.1 46.5 41.1 53.7
Highest Mean Temperature (F) 46.1 50.5 53.0 55.8 60.7 66.9 72.7 72.7 66.4 60.2 49.2 45.4 55.7
Year Highest Occurred 1978 1963 1986 1989 1987 1986 1985 1967 1990 1988 1980 1977 1986
Lowest Mean Temperature (F) 33.8 37.6 44.2 45.6 51.9 58.0 64.0 64.9 58.8 52.2 41.1 35.3 51.9
Year Lowest Occurred 1963 1989 1985 1975 1977 1976 1963 1969 1985 1971 1985 1990 1971
Mean Min. Temperature (F) 33.1 35.2 36.9 38.8 43.6 49.3 52.6 52.4 46.8 42.1 38.8 34.4 42.0
Highest Mean Min. Temperature (F) 38.1 41.3 41.0 42.0 47.0 53.8 55.1 55.9 51.1 46.2 41.6 39.2 43.8
Year Highest Occurred 1981 1963 1983 1989 1987 1969 1990 1990 1963 1979 1983 1981 1986
Lowest Mean Min. Temperature (F) 25.1 27.4 32.9 35.6 40.9 44.0 49.8 48.2 43.2 37.1 31.0 27.9 40.6
Year Lowest Occurred 1963 1989 1969 1970 1977 1976 1977 1980 1965 1974 1978 1990 1964
Mean Precipitation (in.) 4.82 3.42 3.46 1.99 1.24 0.63 0.29 0.63 1.10 2.35 5.38 5.56 30.87
Highest Precipitation (in.) 9.81 9.27 6.85 4.19 4.75 1.50 1.49 3.08 4.51 8.36 15.26 15.55 47.89
Year Highest Occurred 1974 1983 1983 1979 1963 1988 1987 1983 1986 1962 1973 1964 1983
Lowest Precipitation (in.) 0.79 0.49 0.25 0.67 0.20 0.10 0.00 0.00 0.00 0.03 0.31 0.83 17.30
Year Lowest Occurred 1985 1988 1965 1990 1966 1977 1988 1986 1987 1987 1976 1976 1976
Heating Degree Days (F) 750. 566. 539. 429. 270. 106. 24. 37. 116. 307. 555. 741. 4440.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 40. 111. 123. 41. 0. 0. 0. 315.

Western Regional Climate Center, wrcc@dri.edu