RICHFIELD, IDAHO

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 29.9 36.4 46.3 58.0 67.4 76.5 85.8 83.8 74.4 62.2 44.2 32.2 58.1
Highest Mean Max. Temperature (F) 40.4 47.4 56.9 68.6 73.6 83.7 90.9 90.5 86.9 74.1 51.3 40.0 61.9
Year Highest Occurred 1981 1963 1986 1987 1966 1988 1985 1988 1990 1988 1965 1976 1987
Lowest Mean Max. Temperature (F) 21.5 25.7 33.5 48.1 62.0 69.2 80.3 73.9 67.0 54.7 33.7 21.3 54.8
Year Lowest Occurred 1979 1964 1964 1975 1977 1963 1982 1968 1965 1969 1985 1985 1985
Mean Temperature (F) 20.9 26.3 34.7 43.9 52.6 61.2 68.9 67.2 58.0 46.9 34.1 23.1 44.8
Highest Mean Temperature (F) 30.3 37.0 43.8 50.8 57.3 67.7 73.8 74.2 67.1 55.3 39.9 30.6 47.7
Year Highest Occurred 1981 1963 1986 1987 1987 1961 1985 1961 1990 1988 1965 1980 1987
Lowest Mean Temperature (F) 12.3 13.6 22.8 37.9 48.7 56.7 65.1 61.3 51.2 41.4 24.2 10.9 40.9
Year Lowest Occurred 1979 1964 1964 1975 1975 1963 1986 1968 1965 1969 1985 1985 1985
Mean Min. Temperature (F) 11.9 16.2 23.2 29.8 37.8 45.9 52.1 50.5 41.5 31.6 23.9 14.0 31.5
Highest Mean Min. Temperature (F) 20.1 26.5 30.6 35.5 42.1 51.7 56.7 58.5 48.4 37.0 28.4 21.3 33.6
Year Highest Occurred 1983 1963 1986 1990 1987 1961 1985 1961 1963 1963 1981 1981 1986
Lowest Mean Min. Temperature (F) 3.0 1.5 12.0 24.8 34.1 42.4 48.5 46.1 35.4 28.1 14.6 0.4 27.0
Year Lowest Occurred 1979 1964 1964 1970 1974 1976 1983 1975 1965 1969 1985 1985 1985
Mean Precipitation (in.) 1.64 1.23 1.10 0.74 1.01 0.78 0.37 0.49 0.55 0.64 1.56 1.64 11.75
Highest Precipitation (in.) 4.54 4.64 2.78 2.02 2.57 3.99 1.54 3.36 1.75 2.03 4.33 6.73 19.08
Year Highest Occurred 1969 1986 1975 1965 1962 1963 1982 1968 1978 1989 1988 1964 1983
Lowest Precipitation (in.) 0.22 0.02 0.24 0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5.28
Year Lowest Occurred 1984 1988 1990 1977 1969 1974 1988 1975 1987 1988 1976 1989 1966
Heating Degree Days (F) 1367. 1084. 939. 633. 384. 152. 22. 68. 244. 561. 927. 1299. 7680.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 38. 143. 136. 34. 0. 0. 0. 351.

Western Regional Climate Center, wrcc@dri.edu