IRON MTN KINGSFORD WWTP, MICHIGAN

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 22.9 27.3 38.0 53.3 66.9 75.1 80.1 76.7 67.4 56.1 40.0 26.6 52.5
Highest Mean Max. Temperature (F) 34.7 36.2 46.6 60.9 76.8 82.9 84.7 82.3 71.4 67.9 46.8 32.7 56.4
Year Highest Occurred 1990 1987 1968 1977 1977 1988 1988 1969 1987 1963 1975 1987 1987
Lowest Mean Max. Temperature (F) 13.7 19.4 31.8 47.5 60.2 66.3 75.8 72.1 61.5 50.0 35.0 18.5 49.5
Year Lowest Occurred 1963 1979 1965 1972 1983 1969 1965 1964 1965 1980 1985 1989 1979
Mean Temperature (F) 12.1 15.3 26.9 41.2 53.6 62.4 67.7 65.0 56.3 45.7 31.6 17.8 41.3
Highest Mean Temperature (F) 21.0 26.1 35.2 46.6 62.3 66.8 72.3 69.7 59.4 54.9 37.3 25.2 44.6
Year Highest Occurred 1990 1984 1973 1987 1977 1987 1983 1983 1978 1963 1963 1965 1987
Lowest Mean Temperature (F) 4.4 6.6 20.4 35.7 47.9 55.8 63.4 61.7 51.7 39.8 25.4 7.1 38.9
Year Lowest Occurred 1982 1979 1989 1975 1967 1969 1965 1964 1974 1988 1976 1989 1972
Mean Min. Temperature (F) 1.3 3.3 15.7 29.1 40.3 49.6 55.2 53.3 45.2 35.2 23.1 8.9 30.0
Highest Mean Min. Temperature (F) 10.1 16.3 25.8 34.2 47.8 53.3 60.2 57.9 49.9 44.5 28.4 18.6 33.1
Year Highest Occurred 1983 1984 1973 1986 1977 1975 1983 1983 1968 1971 1963 1965 1973
Lowest Mean Min. Temperature (F) -7.9 -6.2 6.7 23.5 34.4 43.3 51.0 49.8 40.5 28.5 15.6 -4.3 26.2
Year Lowest Occurred 1982 1979 1989 1975 1967 1982 1965 1986 1974 1988 1976 1989 1989
Mean Precipitation (in.) 1.13 0.91 1.56 2.21 3.12 3.60 3.21 3.69 3.74 2.53 1.85 1.53 29.08
Highest Precipitation (in.) 2.64 2.49 3.83 5.11 6.25 7.38 5.69 6.02 6.27 5.22 5.42 2.86 36.04
Year Highest Occurred 1969 1962 1966 1977 1965 1968 1978 1978 1980 1983 1985 1968 1985
Lowest Precipitation (in.) 0.12 0.07 0.28 0.23 0.39 1.15 1.07 0.27 0.81 0.47 0.41 0.37 20.32
Year Lowest Occurred 1961 1969 1990 1989 1986 1972 1966 1969 1976 1964 1968 1986 1989
Heating Degree Days (F) 1640. 1392. 1181. 714. 371. 125. 36. 71. 261. 598. 1002. 1463. 8854.
Cooling Degree Days (F) 0. 0. 0. 0. 18. 47. 119. 71. 0. 0. 0. 0. 255.

Western Regional Climate Center, wrcc@dri.edu