DORENA DAM, OREGON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 48.8 53.4 57.4 61.9 67.5 73.4 80.9 82.2 77.2 66.4 54.1 48.0 64.3
Highest Mean Max. Temperature (F) 53.6 59.9 63.8 69.6 76.4 79.6 88.9 88.5 84.6 74.8 59.6 53.5 88.9
Year Highest Occurred 1983 1991 1992 1987 1992 1992 1985 1986 1974 1987 1999 1980 1985
Lowest Mean Max. Temperature (F) 40.2 44.6 52.5 55.3 61.8 67.2 73.3 76.2 70.5 61.2 45.5 41.3 40.2
Year Lowest Occurred 1979 1989 1971 1975 1977 1980 1983 1976 1978 1984 1985 1990 1979
Mean Temperature (F) 40.6 43.6 46.5 50.0 55.1 60.3 65.6 65.9 61.4 53.6 45.4 40.5 52.4
Highest Mean Temperature (F) 45.8 48.4 50.5 54.4 60.5 64.6 70.8 69.8 64.8 57.0 50.2 44.6 70.8
Year Highest Occurred 1998 1991 1986 1989 1997 1992 1998 1977 1974 1979 1999 1973 1998
Lowest Mean Temperature (F) 32.0 34.0 42.5 44.9 51.1 56.2 62.3 62.4 57.8 50.3 38.1 33.2 32.0
Year Lowest Occurred 1979 1989 1985 1975 1977 1976 1983 1980 1985 1971 1985 1990 1979
Mean Min. Temperature (F) 32.3 33.7 35.5 38.1 42.6 47.1 50.3 49.5 45.6 40.7 36.7 32.9 40.4
Highest Mean Min. Temperature (F) 38.8 38.4 40.0 41.8 46.6 50.3 56.6 53.4 50.1 45.2 42.8 37.7 56.6
Year Highest Occurred 1998 1995 1993 1993 1994 1986 1998 1977 1995 1979 1995 1995 1998
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 29.1 25.2 23.4
Year Lowest Occurred 1979 1989 1985 1982 1982 1976 1977 1980 1972 1974 1993 1990 1989
Mean Precipitation (in.) 6.21 5.41 5.29 4.34 3.25 1.81 0.75 1.03 1.80 3.39 7.42 6.73 47.43
Highest Precipitation (in.) 11.25 10.89 9.07 7.49 8.01 4.34 5.44 3.18 5.54 7.30 17.12 14.91 17.12
Year Highest Occurred 1996 1986 1989 1992 1998 1984 1987 1976 1986 1996 1973 1981 1973
Lowest Precipitation (in.) 0.64 1.53 1.83 2.14 0.65 0.50 0.00 0.00 0.00 0.07 2.18 1.49 0.00
Year Lowest Occurred 1985 1988 1978 1987 1982 1977 1994 2000 1999 1987 1993 1976 1994
Heating Degree Days (F) 758. 600. 575. 450. 312. 159. 66. 57. 137. 355. 589. 762. 4820.
Cooling Degree Days (F) 0. 0. 0. 0. 3. 16. 85. 83. 29. 0. 0. 0. 216.

Western Regional Climate Center, wrcc@dri.edu