BONNERS FERRY, IDAHO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 33.0 39.9 48.8 59.3 68.6 76.1 83.3 83.0 71.9 57.2 41.6 33.5 58.0
Highest Mean Max. Temperature (F) 38.7 45.0 54.6 67.3 73.3 82.1 92.7 89.9 80.8 64.0 45.7 41.3 61.2
Year Highest Occurred 1990 1963 1986 1977 1983 1961 1985 1967 1967 1988 1987 1979 1987
Lowest Mean Max. Temperature (F) 21.9 32.1 43.3 52.2 63.9 69.7 77.4 73.2 63.8 52.6 30.6 25.4 55.4
Year Lowest Occurred 1979 1989 1964 1970 1974 1966 1986 1964 1965 1968 1985 1983 1964
Mean Temperature (F) 26.5 32.0 38.5 46.6 54.5 61.7 66.6 66.1 56.6 45.5 35.0 27.7 46.4
Highest Mean Temperature (F) 33.1 36.9 43.1 51.5 57.9 66.0 72.2 69.8 63.2 50.8 39.5 34.2 48.4
Year Highest Occurred 1990 1961 1986 1987 1987 1986 1985 1961 1967 1988 1962 1962 1987
Lowest Mean Temperature (F) 13.4 22.6 31.4 41.1 51.6 57.2 61.9 59.7 50.7 42.5 23.2 18.1 44.6
Year Lowest Occurred 1979 1989 1965 1970 1974 1966 1986 1964 1965 1969 1985 1983 1985
Mean Min. Temperature (F) 20.0 24.2 28.0 33.8 40.4 47.2 49.9 49.2 41.3 33.8 28.2 21.8 34.8
Highest Mean Min. Temperature (F) 27.7 31.3 32.5 37.4 44.2 50.6 54.8 52.7 46.1 38.6 34.0 29.3 36.1
Year Highest Occurred 1967 1961 1983 1974 1981 1970 1975 1990 1966 1975 1962 1962 1976
Lowest Mean Min. Temperature (F) 4.9 13.1 18.8 30.0 37.4 43.8 46.3 44.7 37.5 29.0 15.8 10.7 32.5
Year Lowest Occurred 1979 1989 1965 1982 1982 1962 1986 1969 1965 1987 1985 1983 1985
Mean Precipitation (in.) 3.17 1.98 1.63 1.47 1.64 1.61 0.93 1.15 1.41 1.75 3.55 3.41 23.70
Highest Precipitation (in.) 6.70 4.69 3.84 2.81 4.10 3.96 2.23 2.97 3.65 4.53 8.38 6.33 30.47
Year Highest Occurred 1974 1982 1987 1988 1978 1981 1983 1976 1962 1967 1973 1964 1982
Lowest Precipitation (in.) 0.22 0.40 0.32 0.28 0.55 0.40 0.00 0.00 0.04 0.04 0.52 0.67 16.89
Year Lowest Occurred 1985 1964 1965 1973 1983 1979 1973 1967 1990 1974 1979 1985 1976
Heating Degree Days (F) 1194. 924. 822. 552. 326. 136. 51. 69. 269. 605. 900. 1156. 7004.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 37. 100. 103. 17. 0. 0. 0. 257.
Western Regional Climate Center, wrcc@dri.edu