SENECA, OREGON

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 33.9 39.1 45.0 52.4 60.5 69.4 79.3 80.0 70.7 59.4 42.6 34.5 55.6
Highest Mean Max. Temperature (F) 40.6 48.6 53.4 62.7 70.6 77.0 85.7 85.5 78.8 71.4 51.9 42.5 85.7
Year Highest Occurred 1994 1991 1992 1987 1992 1986 1985 1971 1990 1988 1976 1989 1985
Lowest Mean Max. Temperature (F) 22.9 30.6 38.7 41.2 54.4 63.3 67.2 73.7 61.0 50.3 32.5 23.3 22.9
Year Lowest Occurred 1979 1989 1976 1975 1977 1991 1993 1993 1985 1984 1985 1985 1979
Mean Temperature (F) 21.9 26.7 33.1 39.3 46.2 52.9 58.9 57.9 49.4 40.4 30.9 23.1 40.1
Highest Mean Temperature (F) 29.8 36.4 38.5 45.1 51.3 57.4 63.8 61.9 55.5 47.6 36.9 29.2 63.8
Year Highest Occurred 1998 1991 1978 1990 1993 1988 1998 1971 1998 1988 1999 1995 1998
Lowest Mean Temperature (F) 7.4 15.1 24.2 30.9 42.7 49.2 51.3 53.3 42.6 36.4 20.2 10.8 7.4
Year Lowest Occurred 1979 1989 1985 1975 1977 1976 1993 1980 1971 1971 1985 1985 1979
Mean Min. Temperature (F) 9.9 14.2 21.1 26.1 31.8 36.4 38.4 35.7 28.0 21.4 19.2 11.6 24.5
Highest Mean Min. Temperature (F) 21.1 24.4 28.0 29.8 37.3 43.1 44.3 40.3 33.9 30.8 26.3 20.2 44.3
Year Highest Occurred 1995 1992 1983 1989 1993 1988 1975 1983 1998 1979 1991 1973 1975
Lowest Mean Min. Temperature (F) -8.1 -0.4 8.8 20.6 28.7 33.4 33.4 30.5 20.8 16.1 5.8 -1.8 -8.1
Year Lowest Occurred 1979 1989 1985 1975 1999 1976 1999 1980 1971 1978 1993 1985 1979
Mean Precipitation (in.) 1.34 1.09 1.28 1.06 1.60 1.17 0.70 0.72 0.69 0.83 1.47 1.63 13.58
Highest Precipitation (in.) 3.14 3.25 3.56 2.36 4.39 4.11 1.95 2.74 2.31 2.20 3.07 4.95 4.95
Year Highest Occurred 1995 1986 1983 1990 1998 1982 1997 1979 1982 1979 1973 1996 1996
Lowest Precipitation (in.) 0.16 0.06 0.04 0.27 0.04 0.02 0.00 0.00 0.00 0.00 0.17 0.00 0.00
Year Lowest Occurred 1985 1971 1979 1999 1975 1973 1988 1980 1999 1988 1976 1989 1988
Heating Degree Days (F) 1337. 1075. 989. 773. 585. 365. 210. 232. 473. 764. 1024. 1301. 9128.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 2. 19. 11. 3. 0. 0. 0. 35.

Western Regional Climate Center, wrcc@dri.edu