POLEBRIDGE, MONTANA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 28.5 35.7 43.4 53.9 62.8 70.3 78.2 78.8 68.0 55.0 37.5 29.1 53.4
Highest Mean Max. Temperature (F) 37.6 43.0 53.7 61.3 69.5 77.1 87.5 87.2 79.2 62.4 43.9 38.6 87.5
Year Highest Occurred 1994 1991 1992 1987 1993 1986 1985 1998 1998 1987 1981 1979 1985
Lowest Mean Max. Temperature (F) 15.7 25.0 33.9 44.8 54.8 63.2 66.3 70.4 58.1 48.3 23.2 18.2 15.7
Year Lowest Occurred 1979 1989 1975 1975 1974 1981 1993 1975 1985 1971 1985 1983 1979
Mean Temperature (F) 17.2 22.8 30.3 39.3 47.4 54.3 59.5 59.0 49.5 39.2 27.4 18.8 38.7
Highest Mean Temperature (F) 26.3 30.0 37.3 43.6 52.8 59.4 64.7 62.5 55.6 44.8 33.9 29.0 64.7
Year Highest Occurred 1994 1983 1992 1987 1993 1992 1975 1991 1998 1988 1999 1979 1975
Lowest Mean Temperature (F) -1.2 9.1 22.2 31.7 43.8 50.4 54.1 54.2 44.5 33.9 12.1 4.9 -1.2
Year Lowest Occurred 1979 1989 1975 1975 1974 1976 1993 1980 1985 1971 1985 1983 1979
Mean Min. Temperature (F) 5.8 9.9 17.2 24.7 32.0 38.3 40.7 39.1 30.9 23.4 17.3 8.4 24.0
Highest Mean Min. Temperature (F) 14.9 20.0 23.5 29.8 36.0 42.4 45.3 44.5 35.6 28.8 25.1 19.4 45.3
Year Highest Occurred 1994 1983 1984 1993 1993 1992 1975 1976 1978 1995 1983 1979 1975
Lowest Mean Min. Temperature (F) -18.2 -6.8 10.3 18.5 27.3 34.9 35.5 34.8 27.2 15.4 0.9 -8.5 -18.2
Year Lowest Occurred 1979 1989 1985 1975 2000 2000 2000 1988 1999 1991 1985 1983 1979
Mean Precipitation (in.) 2.23 1.79 1.46 1.21 1.70 2.24 1.57 1.32 1.16 1.34 2.36 2.38 20.76
Highest Precipitation (in.) 6.79 3.81 2.85 2.35 3.83 5.28 4.60 2.99 2.61 3.99 6.08 5.69 6.79
Year Highest Occurred 1971 1982 1971 1996 1980 1971 1993 1976 1984 1975 1973 1980 1971
Lowest Precipitation (in.) 0.05 0.10 0.08 0.00 0.29 0.79 0.37 0.29 0.00 0.09 0.18 0.37 0.00
Year Lowest Occurred 1985 1998 1992 1999 1983 1977 1973 2000 1994 1987 1979 1986 1999
Heating Degree Days (F) 1485. 1182. 1077. 771. 545. 323. 191. 206. 468. 799. 1128. 1434. 9609.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 2. 20. 18. 2. 0. 0. 0. 42.

Western Regional Climate Center, wrcc@dri.edu