O O RANCH, OREGON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 40.2 45.4 52.8 60.5 68.2 77.3 86.4 85.8 77.8 66.8 50.1 40.9 62.7
Highest Mean Max. Temperature (F) 46.1 56.0 61.0 71.1 77.6 85.2 91.5 91.8 86.3 76.9 58.4 46.3 91.8
Year Highest Occurred 1971 1995 1972 1987 1972 1974 1985 1971 1974 1988 1976 1973 1971
Lowest Mean Max. Temperature (F) 30.0 31.9 45.2 50.4 54.7 71.4 74.2 79.0 68.0 54.7 39.5 30.8 30.0
Year Lowest Occurred 1979 1989 1976 1975 1998 1993 1993 1976 1986 1984 1994 1985 1979
Mean Temperature (F) 29.3 34.4 40.1 45.9 52.5 60.1 67.1 65.6 57.4 48.5 37.2 29.6 47.3
Highest Mean Temperature (F) 35.8 42.3 46.4 51.9 57.1 66.0 72.0 71.1 62.0 55.1 42.6 37.4 72.0
Year Highest Occurred 1998 1995 1972 1987 1972 1986 1985 1971 1974 1988 1986 1996 1985
Lowest Mean Temperature (F) 19.2 21.2 32.9 39.3 45.2 56.1 58.4 61.7 51.8 42.3 27.5 18.6 18.6
Year Lowest Occurred 1979 1989 1976 1975 1998 1980 1993 1995 1985 1984 1985 1985 1985
Mean Min. Temperature (F) 18.3 23.3 27.4 31.3 36.7 42.8 47.8 45.3 36.9 30.2 24.2 18.3 31.9
Highest Mean Min. Temperature (F) 26.5 30.7 33.1 38.7 40.0 50.0 52.9 50.4 41.6 35.5 29.6 28.5 52.9
Year Highest Occurred 1978 1998 2000 1989 1987 1989 1975 1971 1990 1999 1991 1996 1975
Lowest Mean Min. Temperature (F) 7.3 10.5 20.6 27.6 33.5 36.8 42.5 39.5 33.9 25.8 13.5 6.3 6.3
Year Lowest Occurred 1977 1989 1976 1982 1999 1997 1993 1995 1999 1978 1985 1985 1985
Mean Precipitation (in.) 0.92 0.65 1.07 0.84 1.33 0.77 0.45 0.65 0.57 0.71 0.92 0.87 9.75
Highest Precipitation (in.) 2.85 1.86 3.11 2.54 3.70 1.93 1.45 4.64 1.80 2.12 2.27 4.24 4.64
Year Highest Occurred 1997 1986 1983 1978 1998 1984 1975 1976 2000 1975 1981 1981 1976
Lowest Precipitation (in.) 0.07 0.10 0.00 0.00 0.03 0.00 0.00 0.00 0.00 0.00 0.06 0.00 0.00
Year Lowest Occurred 1992 1999 1997 1977 1975 1974 2000 2000 1999 1998 1974 2000 1997
Heating Degree Days (F) 1107. 858. 773. 574. 394. 186. 62. 74. 243. 511. 835. 1098. 6715.
Cooling Degree Days (F) 0. 0. 0. 0. 5. 37. 127. 92. 14. 0. 0. 0. 275.

Western Regional Climate Center, wrcc@dri.edu