O O RANCH, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 38.0 44.6 50.2 59.4 68.4 76.9 86.0 84.1 76.1 64.8 48.5 38.6 61.3
Highest Mean Max. Temperature (F) 44.0 52.2 59.2 69.6 76.5 84.2 93.2 90.2 83.8 75.3 56.4 46.1 64.3
Year Highest Occurred 1971 1963 1972 1987 1972 1974 1968 1967 1974 1988 1976 1989 1968
Lowest Mean Max. Temperature (F) 27.9 35.0 43.4 48.9 60.0 70.8 80.0 75.6 65.5 51.8 40.0 26.6 57.1
Year Lowest Occurred 1979 1989 1976 1975 1977 1984 1983 1976 1986 1984 1985 1972 1984
Mean Temperature (F) 28.0 33.7 38.2 44.8 52.5 60.5 67.3 65.1 56.8 47.2 36.7 28.5 46.6
Highest Mean Temperature (F) 33.7 40.9 45.0 51.8 58.2 65.7 72.0 69.6 61.7 54.1 41.2 34.8 48.6
Year Highest Occurred 1978 1963 1972 1989 1969 1961 1985 1971 1963 1988 1986 1973 1968
Lowest Mean Temperature (F) 18.2 22.3 31.5 38.0 47.5 55.3 63.2 60.7 50.4 40.8 26.1 15.0 43.1
Year Lowest Occurred 1979 1989 1976 1975 1977 1980 1963 1976 1985 1984 1985 1985 1985
Mean Min. Temperature (F) 17.9 22.7 26.1 30.1 36.6 44.0 48.4 46.1 37.4 29.5 25.0 18.3 31.8
Highest Mean Min. Temperature (F) 26.5 29.6 32.1 38.7 40.5 50.0 52.8 51.3 44.4 34.6 29.6 26.9 33.8
Year Highest Occurred 1978 1963 1983 1989 1963 1989 1985 1961 1963 1979 1968 1973 1981
Lowest Mean Min. Temperature (F) 7.0 9.6 19.5 25.6 33.4 39.4 45.3 41.9 32.6 25.8 12.1 2.4 27.9
Year Lowest Occurred 1977 1989 1976 1970 1964 1980 1962 1974 1971 1978 1985 1985 1985
Mean Precipitation (in.) 0.95 0.76 0.88 0.71 1.14 0.93 0.47 0.73 0.57 0.76 1.21 1.13 10.24
Highest Precipitation (in.) 3.22 3.32 3.11 2.54 2.99 2.34 1.53 4.64 1.64 2.62 2.78 4.24 17.17
Year Highest Occurred 1970 1986 1983 1978 1971 1964 1987 1976 1976 1962 1966 1981 1983
Lowest Precipitation (in.) 0.12 0.00 0.01 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.06 0.00 4.74
Year Lowest Occurred 1974 1964 1977 1977 1975 1974 1972 1970 1975 1988 1974 1976 1974
Heating Degree Days (F) 1147. 876. 831. 606. 388. 168. 46. 81. 265. 552. 849. 1132. 6941.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 33. 118. 84. 19. 0. 0. 0. 254.

Western Regional Climate Center, wrcc@dri.edu