RIVERSIDE, OREGON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 37.5 45.3 54.6 63.2 71.5 80.9 89.6 88.2 78.9 66.1 48.1 37.6 63.5
Highest Mean Max. Temperature (F) 44.4 53.6 63.4 73.0 80.3 88.7 95.5 93.8 86.3 77.1 56.0 43.5 95.5
Year Highest Occurred 1998 1995 1992 1987 1992 1977 1985 1981 1990 1988 1976 1977 1985
Lowest Mean Max. Temperature (F) 25.3 33.1 48.7 53.4 64.7 74.6 78.5 79.3 68.7 59.2 39.7 22.2 22.2
Year Lowest Occurred 1979 1993 1993 1975 1998 1984 1993 1976 1985 1984 1985 1985 1985
Mean Temperature (F) 28.6 34.7 41.3 47.7 55.2 63.3 70.4 68.9 59.7 48.7 36.8 28.4 48.6
Highest Mean Temperature (F) 36.1 40.9 46.4 54.8 59.6 70.4 76.2 74.5 66.7 56.7 42.1 36.1 76.2
Year Highest Occurred 1998 1992 1992 1987 1987 1977 1985 1971 1990 1988 1995 1977 1985
Lowest Mean Temperature (F) 14.1 24.7 36.5 41.3 50.7 58.5 60.1 62.1 53.1 45.6 29.0 10.3 10.3
Year Lowest Occurred 1979 1989 1976 1975 1999 1993 1993 1993 1985 1984 1985 1985 1985
Mean Min. Temperature (F) 19.7 24.0 27.9 32.2 38.9 45.7 51.1 49.6 40.4 31.3 25.4 19.1 33.8
Highest Mean Min. Temperature (F) 27.8 30.5 32.2 37.7 43.2 52.0 57.8 56.6 47.1 38.0 30.9 28.8 57.8
Year Highest Occurred 1995 1983 1983 1989 1987 1977 1975 1971 1990 1975 1983 1977 1975
Lowest Mean Min. Temperature (F) 2.8 15.2 22.5 25.6 31.2 40.1 41.6 41.2 34.0 26.1 12.5 -1.6 -1.6
Year Lowest Occurred 1979 1989 1976 1999 1999 1998 1993 1995 1993 1997 1993 1985 1985
Mean Precipitation (in.) 1.06 0.92 1.05 0.82 1.08 0.85 0.53 0.50 0.46 0.62 1.01 1.11 10.01
Highest Precipitation (in.) 2.20 2.88 3.14 2.38 3.68 2.17 1.66 2.85 1.49 2.44 2.98 3.53 3.68
Year Highest Occurred 1997 1986 1983 1975 1998 1992 1985 1979 1986 2000 1973 1981 1998
Lowest Precipitation (in.) 0.04 0.02 0.03 0.02 0.12 0.00 0.00 0.00 0.00 0.00 0.09 0.01 0.00
Year Lowest Occurred 1985 1997 1997 1977 1976 1974 1994 1971 1999 1988 1986 1989 1974
Heating Degree Days (F) 1129. 851. 737. 519. 308. 134. 38. 46. 199. 505. 846. 1137. 6449.
Cooling Degree Days (F) 0. 0. 0. 0. 3. 83. 205. 166. 38. 0. 0. 0. 495.

Western Regional Climate Center, wrcc@dri.edu