BONNERS FERRY, IDAHO

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 33.3 39.2 49.5 60.4 69.3 76.0 83.1 83.4 72.3 57.4 41.3 33.5 58.2
Highest Mean Max. Temperature (F) 39.7 45.1 57.6 67.4 75.7 82.0 92.7 88.7 80.2 64.0 45.7 41.3 92.7
Year Highest Occurred 1994 1991 1992 1977 1993 1986 1985 1986 1987 1988 1987 1979 1985
Lowest Mean Max. Temperature (F) 21.9 32.1 44.1 53.3 61.9 69.8 72.7 77.0 64.8 52.4 30.6 25.4 21.9
Year Lowest Occurred 1979 1989 1976 1972 1996 1981 1993 1975 1986 1995 1985 1983 1979
Mean Temperature (F) 26.9 31.8 39.3 47.6 55.5 61.8 66.9 66.7 57.1 45.8 35.0 27.8 46.9
Highest Mean Temperature (F) 35.1 37.9 43.5 51.9 61.2 67.1 72.5 69.6 62.8 51.3 39.6 34.4 72.5
Year Highest Occurred 1994 1991 1992 1987 1993 1992 1985 1986 1998 1988 1999 1979 1985
Lowest Mean Temperature (F) 13.7 22.9 34.7 42.4 51.1 57.5 60.0 61.8 52.5 42.7 23.7 18.5 13.7
Year Lowest Occurred 1979 1989 1976 1975 1996 1971 1993 1980 1971 1971 1985 1983 1979
Mean Min. Temperature (F) 20.5 24.3 29.1 34.7 41.6 47.6 50.7 50.0 41.9 34.1 28.6 22.1 35.4
Highest Mean Min. Temperature (F) 30.4 30.8 33.2 38.0 46.7 52.4 56.8 53.5 46.8 39.0 34.6 29.0 56.8
Year Highest Occurred 1994 1991 1983 1993 1993 1992 1998 1990 1998 1997 1999 1999 1998
Lowest Mean Min. Temperature (F) 5.5 13.7 25.3 30.8 38.2 44.7 47.0 45.8 38.2 29.6 16.8 11.5 5.5
Year Lowest Occurred 1979 1989 1985 1982 1982 1990 1986 1980 1971 1991 1985 1983 1979
Mean Precipitation (in.) 2.70 1.77 1.49 1.42 1.76 1.62 1.02 1.07 1.16 1.61 3.03 2.91 21.56
Highest Precipitation (in.) 6.70 4.69 3.84 2.81 4.71 3.96 2.23 2.97 2.70 3.60 8.38 5.92 8.38
Year Highest Occurred 1974 1982 1987 1988 1998 1981 1983 1976 1985 1985 1973 1996 1973
Lowest Precipitation (in.) 0.22 0.33 0.42 0.09 0.40 0.40 0.00 0.03 0.04 0.04 0.52 0.67 0.00
Year Lowest Occurred 1985 1997 1999 1999 1995 1979 1973 1981 1990 1974 1979 1985 1973
Heating Degree Days (F) 1181. 931. 798. 524. 301. 137. 63. 50. 253. 597. 901. 1154. 6890.
Cooling Degree Days (F) 0. 0. 0. 0. 5. 41. 122. 102. 17. 0. 0. 0. 287.

Western Regional Climate Center, wrcc@dri.edu