BROADUS, MONTANA

NCDC 1961-1990 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Mean Max. Temperature (F) 31.4 38.2 47.0 59.0 69.0 78.9 87.5 85.9 73.8 62.1 45.6 33.9 59.4
Highest Mean Max. Temperature (F) 45.3 48.1 56.9 70.6 78.1 93.9 94.0 93.9 81.6 72.6 53.9 45.9 64.1
Year Highest Occurred 1981 1983 1986 1987 1988 1988 1988 1983 1990 1963 1981 1979 1988
Lowest Mean Max. Temperature (F) 16.5 24.3 31.1 49.8 63.3 71.2 80.1 79.5 59.1 50.4 26.3 15.3 55.4
Year Lowest Occurred 1979 1989 1965 1970 1968 1969 1972 1987 1965 1969 1985 1983 1978
Mean Temperature (F) 18.4 25.2 33.5 44.7 54.9 64.5 71.4 69.1 57.5 46.2 31.9 20.7 44.8
Highest Mean Temperature (F) 31.8 35.4 42.8 52.2 61.4 77.7 76.5 76.8 65.4 54.9 37.5 29.5 48.7
Year Highest Occurred 1981 1984 1986 1987 1988 1988 1964 1983 1963 1963 1987 1979 1988
Lowest Mean Temperature (F) 2.2 12.3 20.2 38.7 50.4 58.4 65.1 63.5 46.3 38.4 15.3 1.7 41.1
Year Lowest Occurred 1979 1979 1965 1970 1968 1969 1972 1974 1965 1969 1985 1983 1978
Mean Min. Temperature (F) 5.4 12.2 20.0 30.4 40.7 50.1 55.2 52.2 41.1 30.1 18.3 7.5 30.3
Highest Mean Min. Temperature (F) 18.3 22.9 28.6 33.8 46.1 61.5 61.1 59.6 50.0 37.2 24.2 15.4 33.8
Year Highest Occurred 1981 1984 1986 1987 1987 1988 1966 1983 1963 1963 1962 1988 1987
Lowest Mean Min. Temperature (F) -12.1 -3.2 9.3 25.7 35.6 45.6 46.8 46.4 33.4 24.5 4.2 -11.9 26.8
Year Lowest Occurred 1979 1979 1965 1983 1983 1969 1971 1974 1965 1970 1985 1983 1978
Mean Precipitation (in.) 0.50 0.44 0.82 1.49 2.38 2.37 1.31 0.91 1.30 1.01 0.59 0.59 13.71
Highest Precipitation (in.) 1.65 1.26 3.05 3.84 7.10 4.66 2.96 3.11 4.55 5.86 2.01 1.54 18.41
Year Highest Occurred 1975 1978 1977 1967 1978 1964 1962 1968 1967 1971 1978 1968 1982
Lowest Precipitation (in.) 0.11 0.12 0.12 0.11 0.69 0.68 0.08 0.01 0.04 0.00 0.07 0.05 7.77
Year Lowest Occurred 1961 1990 1963 1981 1988 1974 1973 1967 1969 1978 1972 1986 1988
Heating Degree Days (F) 1445. 1114. 977. 609. 322. 121. 20. 49. 258. 583. 993. 1373. 7864.
Cooling Degree Days (F) 0. 0. 0. 0. 9. 106. 219. 176. 33. 0. 0. 0. 543.
Western Regional Climate Center, wrcc@dri.edu