PRINEVILLE 4 NW, OREGON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 41.9 48.1 54.5 60.7 68.5 77.0 85.8 85.7 77.8 65.7 49.4 41.7 63.1
Highest Mean Max. Temperature (F) 50.1 55.4 61.9 69.8 78.8 82.9 92.1 90.6 85.0 76.2 57.8 49.4 92.1
Year Highest Occurred 1994 1991 1992 1987 1992 1974 1985 1986 1990 1988 1999 1980 1985
Lowest Mean Max. Temperature (F) 26.7 37.2 48.5 53.8 60.6 69.7 76.1 77.4 68.1 58.1 38.1 31.7 26.7
Year Lowest Occurred 1979 1993 1975 1975 1977 1980 1993 1976 1986 1984 1985 1983 1979
Mean Temperature (F) 31.5 35.9 39.9 44.4 51.3 58.7 64.3 63.7 56.3 47.2 37.3 31.3 46.8
Highest Mean Temperature (F) 37.0 40.7 44.9 49.7 57.2 63.2 69.5 67.2 60.8 53.5 44.5 37.3 69.5
Year Highest Occurred 1999 1992 1986 1987 1992 1986 1998 1991 1990 1988 1999 1980 1998
Lowest Mean Temperature (F) 15.4 25.4 35.9 38.5 47.3 54.6 58.2 59.3 50.6 43.5 26.0 22.3 15.4
Year Lowest Occurred 1979 1993 1975 1975 1977 1980 1993 1980 1986 1984 1985 1985 1979
Mean Min. Temperature (F) 21.0 23.7 25.3 28.0 34.1 40.3 42.8 41.6 34.7 28.6 25.2 20.8 30.5
Highest Mean Min. Temperature (F) 26.9 28.9 31.2 32.6 38.1 43.7 48.2 46.3 38.2 33.9 31.1 29.2 48.2
Year Highest Occurred 1986 1983 1983 1992 1993 1982 1998 1977 1976 1979 1999 1973 1998
Lowest Mean Min. Temperature (F) 4.1 13.6 20.8 23.2 31.5 36.7 38.8 37.5 31.0 24.7 11.7 10.1 4.1
Year Lowest Occurred 1979 1993 1985 1975 1978 1976 1973 1987 1971 1974 1993 1985 1979
Mean Precipitation (in.) 1.14 1.00 0.95 0.80 1.06 0.84 0.58 0.45 0.41 0.76 1.30 1.20 10.49
Highest Precipitation (in.) 2.78 2.96 2.00 2.57 4.40 2.00 3.96 4.30 1.88 1.85 3.21 4.08 4.40
Year Highest Occurred 1995 1996 1989 1989 1998 1992 1987 1976 1986 1992 1996 1981 1998
Lowest Precipitation (in.) 0.05 0.01 0.22 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.25 0.02 0.00
Year Lowest Occurred 1994 1990 1992 1977 1975 2000 1994 1994 2000 1988 1976 1976 1977
Heating Degree Days (F) 1040. 816. 779. 620. 425. 206. 93. 95. 277. 553. 831. 1047. 6782.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 15. 72. 53. 14. 0. 0. 0. 154.

Western Regional Climate Center, wrcc@dri.edu