BLACKFOOT 2 SSW, IDAHO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 31.0 38.1 48.2 59.9 69.2 78.4 86.8 85.1 74.9 62.7 45.6 33.1 59.4
Highest Mean Max. Temperature (F) 39.7 47.9 57.7 70.8 76.6 86.2 91.1 89.8 83.1 71.7 51.1 41.6 62.0
Year Highest Occurred 1981 1970 1986 1987 1969 1988 1985 1981 1979 1988 1965 1980 1966
Lowest Mean Max. Temperature (F) 20.8 26.0 37.0 49.2 63.7 73.1 81.6 78.5 66.8 55.6 35.6 22.2 55.8
Year Lowest Occurred 1979 1985 1964 1975 1975 1983 1986 1968 1961 1984 1985 1985 1985
Mean Temperature (F) 22.2 28.3 36.3 45.7 54.2 62.4 69.3 67.4 58.0 47.5 35.1 24.2 45.9
Highest Mean Temperature (F) 30.4 38.1 44.9 52.0 58.6 68.6 72.7 71.8 63.9 54.3 40.1 32.7 48.0
Year Highest Occurred 1983 1963 1986 1987 1969 1988 1985 1961 1990 1988 1965 1980 1981
Lowest Mean Temperature (F) 11.1 14.7 25.2 38.6 50.0 58.9 65.9 64.0 51.5 42.6 25.1 11.9 41.7
Year Lowest Occurred 1979 1964 1985 1975 1975 1976 1986 1976 1970 1969 1985 1985 1985
Mean Min. Temperature (F) 13.4 18.5 24.4 31.4 39.1 46.2 51.7 49.6 41.1 32.2 24.6 15.2 32.3
Highest Mean Min. Temperature (F) 23.6 28.6 32.1 36.0 42.5 50.9 55.8 55.9 46.5 37.2 29.1 24.3 34.7
Year Highest Occurred 1983 1963 1986 1990 1984 1988 1975 1983 1963 1963 1965 1977 1981
Lowest Mean Min. Temperature (F) 1.3 2.2 12.6 26.0 36.2 42.4 48.2 46.1 34.5 28.4 14.5 1.5 27.5
Year Lowest Occurred 1979 1964 1985 1970 1972 1976 1972 1975 1970 1970 1985 1985 1985
Mean Precipitation (in.) 0.99 0.90 0.97 1.02 1.20 1.09 0.57 0.51 0.78 0.77 1.07 0.94 10.81
Highest Precipitation (in.) 3.01 2.73 1.77 4.10 3.92 5.14 2.51 2.98 3.61 2.65 2.16 2.28 23.09
Year Highest Occurred 1969 1963 1968 1963 1981 1963 1973 1968 1961 1961 1983 1967 1963
Lowest Precipitation (in.) 0.03 0.10 0.03 0.00 0.00 0.02 0.00 0.00 0.00 0.00 0.00 0.00 2.05
Year Lowest Occurred 1989 1990 1988 1985 1989 1988 1990 1988 1987 1988 1976 1976 1989
Heating Degree Days (F) 1327. 1028. 890. 579. 335. 123. 15. 39. 236. 543. 897. 1265. 7277.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 45. 148. 113. 26. 0. 0. 0. 332.

Western Regional Climate Center, wrcc@dri.edu