PRINEVILLE 4 NW, OREGON

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 42.2 48.9 54.4 61.1 69.2 77.9 86.4 85.3 77.2 66.3 50.3 42.5 63.5
Highest Mean Max. Temperature (F) 48.2 54.5 61.5 70.4 74.1 83.6 92.7 92.0 85.4 76.6 57.6 50.8 66.1
Year Highest Occurred 1983 1988 1986 1987 1969 1974 1985 1967 1990 1988 1976 1980 1987
Lowest Mean Max. Temperature (F) 28.0 38.8 49.5 52.4 61.6 71.5 79.6 78.7 68.5 58.5 38.5 32.2 60.9
Year Lowest Occurred 1979 1989 1975 1967 1962 1980 1983 1968 1986 1984 1985 1983 1982
Mean Temperature (F) 31.9 36.8 40.1 44.5 51.8 59.3 64.8 63.7 56.2 47.8 38.4 32.1 47.3
Highest Mean Temperature (F) 37.8 42.9 45.8 50.8 55.7 63.7 69.1 67.8 61.8 54.4 43.4 38.3 48.9
Year Highest Occurred 1986 1963 1986 1987 1969 1986 1985 1977 1990 1988 1976 1980 1987
Lowest Mean Temperature (F) 16.5 26.9 36.3 38.7 48.3 55.4 60.8 59.9 51.2 43.6 26.9 23.1 45.0
Year Lowest Occurred 1979 1989 1964 1970 1962 1980 1986 1964 1961 1969 1985 1985 1985
Mean Min. Temperature (F) 21.6 24.7 25.6 27.9 34.4 40.7 43.1 42.2 35.3 29.2 26.5 21.6 31.1
Highest Mean Min. Temperature (F) 28.4 31.5 32.7 34.0 37.6 44.1 48.3 46.7 41.6 34.7 31.7 29.8 32.9
Year Highest Occurred 1986 1963 1983 1988 1987 1986 1975 1977 1963 1979 1983 1973 1983
Lowest Mean Min. Temperature (F) 4.9 15.0 18.7 22.3 29.6 36.5 39.3 37.9 29.4 25.5 15.2 11.1 28.3
Year Lowest Occurred 1979 1989 1965 1964 1965 1976 1973 1980 1965 1974 1985 1985 1985
Mean Precipitation (in.) 1.17 0.86 0.82 0.74 0.89 0.91 0.43 0.59 0.46 0.73 1.47 1.41 10.48
Highest Precipitation (in.) 2.85 2.16 2.00 2.57 2.59 2.93 3.19 4.30 1.88 2.29 3.05 6.00 17.71
Year Highest Occurred 1970 1986 1989 1989 1977 1969 1987 1976 1986 1962 1961 1964 1983
Lowest Precipitation (in.) 0.21 0.01 0.04 0.00 0.02 0.02 0.00 0.00 0.00 0.00 0.25 0.02 5.99
Year Lowest Occurred 1985 1990 1965 1977 1964 1973 1988 1986 1975 1988 1976 1976 1974
Heating Degree Days (F) 1026. 790. 772. 615. 409. 187. 74. 94. 281. 533. 798. 1020. 6599.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 16. 68. 54. 17. 0. 0. 0. 155.

Western Regional Climate Center, wrcc@dri.edu