ELK RIVER 1 S, IDAHO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 34.0 39.9 45.8 54.2 63.3 71.9 80.9 81.4 70.8 58.2 42.4 34.0 56.4
Highest Mean Max. Temperature (F) 40.2 45.6 53.1 63.7 69.3 80.6 87.7 90.9 81.0 66.8 48.0 39.0 59.0
Year Highest Occurred 1981 1977 1981 1987 1966 1961 1985 1961 1967 1987 1981 1977 1987
Lowest Mean Max. Temperature (F) 25.6 32.8 40.7 47.2 58.0 66.0 73.8 75.2 62.3 52.3 30.2 26.2 53.6
Year Lowest Occurred 1979 1989 1964 1970 1984 1981 1986 1985 1986 1985 1985 1990 1985
Mean Temperature (F) 25.3 30.0 35.0 42.4 49.9 57.5 63.0 62.7 54.0 44.1 34.0 26.1 43.7
Highest Mean Temperature (F) 32.8 35.0 40.1 48.4 54.3 62.9 69.4 68.3 61.7 49.8 38.5 31.7 45.6
Year Highest Occurred 1981 1963 1981 1987 1987 1986 1975 1961 1963 1988 1981 1979 1981
Lowest Mean Temperature (F) 13.8 21.1 29.2 37.3 46.8 53.5 58.2 58.1 47.9 40.6 22.0 18.0 40.9
Year Lowest Occurred 1979 1989 1965 1975 1984 1971 1986 1980 1971 1985 1985 1990 1985
Mean Min. Temperature (F) 16.5 20.0 24.1 30.6 36.5 43.1 45.1 44.0 37.1 29.9 25.7 18.2 30.9
Highest Mean Min. Temperature (F) 25.4 28.8 30.6 36.4 40.1 49.8 53.7 50.2 42.3 33.8 30.7 25.7 33.3
Year Highest Occurred 1990 1961 1983 1980 1987 1988 1975 1983 1963 1988 1988 1973 1981
Lowest Mean Min. Temperature (F) 1.9 9.4 14.0 26.7 32.7 37.8 39.9 39.3 32.0 24.7 13.7 7.7 28.1
Year Lowest Occurred 1979 1989 1965 1972 1965 1976 1965 1969 1971 1987 1985 1985 1985
Mean Precipitation (in.) 5.39 4.13 3.65 2.54 2.71 2.27 1.10 1.21 1.92 2.53 4.36 5.03 36.84
Highest Precipitation (in.) 9.76 8.85 7.14 4.93 5.21 4.75 4.56 3.12 4.60 5.64 10.70 13.13 56.14
Year Highest Occurred 1967 1986 1964 1961 1990 1981 1987 1968 1985 1990 1973 1964 1964
Lowest Precipitation (in.) 0.72 0.79 1.06 0.18 0.86 0.48 0.00 0.00 0.03 0.01 1.42 0.93 27.59
Year Lowest Occurred 1985 1973 1965 1977 1963 1986 1967 1967 1990 1974 1969 1985 1987
Heating Degree Days (F) 1231. 980. 930. 678. 468. 236. 103. 127. 345. 648. 930. 1206. 7882.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 11. 41. 56. 15. 0. 0. 0. 123.

Western Regional Climate Center, wrcc@dri.edu