KOOSKIA 5 SSE, IDAHO

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 35.8 42.8 50.7 58.5 66.5 73.1 82.5 85.9 74.8 60.8 44.3 36.1 59.3
Highest Mean Max. Temperature (F) 43.0 51.3 59.2 65.6 72.4 79.8 90.2 91.6 85.3 69.3 51.7 42.4 91.6
Year Highest Occurred 1994 1992 1992 1987 1992 1986 1996 1971 1990 1988 1999 1980 1971
Lowest Mean Max. Temperature (F) 24.0 31.6 45.4 51.6 60.4 66.1 71.5 79.3 65.3 55.6 32.1 27.1 24.0
Year Lowest Occurred 1979 1989 1976 1975 1996 1981 1993 1993 1985 1995 1985 1983 1979
Mean Temperature (F) 29.2 34.1 40.8 47.6 55.1 61.1 68.2 69.4 60.5 49.1 37.0 29.6 48.5
Highest Mean Temperature (F) 36.2 40.9 47.5 52.5 59.8 66.2 73.7 73.9 68.2 55.5 42.9 35.7 73.9
Year Highest Occurred 1994 1992 1992 1990 1993 1992 1985 1971 1990 1988 1999 1980 1971
Lowest Mean Temperature (F) 15.3 23.2 35.6 42.6 50.3 56.9 60.9 64.2 55.0 44.3 26.2 20.5 15.3
Year Lowest Occurred 1979 1989 1976 1975 1996 1981 1993 1993 1985 1995 1985 1983 1979
Mean Min. Temperature (F) 22.5 25.4 30.9 36.7 43.6 49.0 53.8 52.9 46.1 37.3 29.7 23.1 37.6
Highest Mean Min. Temperature (F) 29.4 30.7 35.7 40.3 47.8 52.7 59.2 56.3 51.9 41.8 34.7 28.9 59.2
Year Highest Occurred 1994 1991 1992 1990 1993 1992 1998 1999 1998 1988 1998 1980 1998
Lowest Mean Min. Temperature (F) 6.6 14.8 25.4 33.3 39.6 46.7 50.2 48.1 43.1 32.9 20.4 13.9 6.6
Year Lowest Occurred 1979 1989 1985 1982 1999 1976 1993 1980 1971 1995 1985 1983 1979
Mean Precipitation (in.) 1.96 1.58 2.65 2.75 3.92 2.36 0.96 0.88 1.23 2.09 2.58 1.94 24.90
Highest Precipitation (in.) 4.43 3.10 4.48 5.26 7.35 4.70 4.27 2.43 3.12 5.95 5.84 3.54 7.35
Year Highest Occurred 1974 1986 1972 1993 1980 1981 1997 1995 1985 1975 1995 1977 1980
Lowest Precipitation (in.) 0.31 0.50 1.30 0.56 1.83 1.08 0.00 0.13 0.00 0.00 0.90 0.46 0.00
Year Lowest Occurred 1985 1990 1993 1977 1999 1979 1996 2000 1993 1987 1987 1986 1996
Heating Degree Days (F) 1112. 867. 751. 522. 312. 154. 49. 30. 187. 494. 840. 1098. 6416.
Cooling Degree Days (F) 0. 0. 0. 0. 4. 35. 146. 167. 51. 0. 0. 0. 403.

Western Regional Climate Center, wrcc@dri.edu