DORENA DAM, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 46.6 51.7 55.1 59.2 65.3 71.9 78.9 79.7 74.4 64.4 52.4 46.6 62.2
Highest Mean Max. Temperature (F) 51.7 57.8 61.1 67.8 69.8 77.8 87.6 87.9 83.0 73.1 55.9 51.6 64.6
Year Highest Occurred 1983 1963 1986 1987 1987 1987 1985 1967 1974 1987 1980 1980 1987
Lowest Mean Max. Temperature (F) 38.3 42.7 50.6 53.5 58.9 65.8 72.0 74.7 68.9 59.5 43.7 39.4 60.0
Year Lowest Occurred 1979 1989 1971 1975 1962 1980 1983 1976 1978 1984 1985 1990 1964
Mean Temperature (F) 39.2 42.5 45.0 48.3 53.5 59.5 64.2 64.6 60.0 52.5 44.6 39.7 51.1
Highest Mean Temperature (F) 42.9 48.6 49.6 53.5 57.2 63.7 68.6 69.4 64.2 56.1 48.3 43.7 52.5
Year Highest Occurred 1961 1963 1986 1989 1987 1986 1985 1967 1967 1979 1965 1973 1986
Lowest Mean Temperature (F) 31.1 33.1 41.6 44.0 50.4 55.5 60.3 61.7 56.8 49.4 37.2 32.3 49.6
Year Lowest Occurred 1979 1989 1985 1975 1977 1976 1963 1980 1970 1971 1985 1990 1985
Mean Min. Temperature (F) 31.7 33.3 35.0 37.4 41.6 47.1 49.5 49.5 45.6 40.6 36.7 32.7 40.1
Highest Mean Min. Temperature (F) 36.1 39.6 38.8 40.9 44.8 51.8 51.9 53.4 50.6 45.2 40.7 36.9 41.5
Year Highest Occurred 1970 1961 1983 1990 1969 1969 1975 1977 1963 1979 1965 1977 1961
Lowest Mean Min. Temperature (F) 23.8 23.4 30.9 32.9 39.3 42.5 47.8 45.4 42.0 36.5 30.4 25.2 37.7
Year Lowest Occurred 1979 1989 1985 1982 1982 1976 1977 1980 1972 1974 1978 1990 1985
Mean Precipitation (in.) 6.27 5.02 5.22 3.95 2.80 1.81 0.72 1.14 1.94 3.52 7.31 6.96 46.66
Highest Precipitation (in.) 12.54 13.04 9.07 7.84 5.42 4.34 5.44 5.85 5.54 6.37 17.12 17.20 57.14
Year Highest Occurred 1964 1961 1989 1963 1977 1984 1987 1968 1986 1990 1973 1964 1964
Lowest Precipitation (in.) 0.64 1.53 0.75 1.29 0.65 0.50 0.00 0.00 0.03 0.07 2.26 1.49 33.24
Year Lowest Occurred 1985 1988 1965 1966 1982 1977 1967 1986 1975 1987 1976 1976 1965
Heating Degree Days (F) 800. 630. 620. 501. 357. 176. 73. 79. 167. 388. 612. 784. 5187.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 11. 48. 66. 17. 0. 0. 0. 142.

Western Regional Climate Center, wrcc@dri.edu