LINCOLN RANGER STN, MONTANA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 30.3 36.2 44.3 54.2 63.5 71.8 80.0 80.5 69.7 56.4 38.6 31.3 54.7
Highest Mean Max. Temperature (F) 39.2 46.1 53.4 62.9 70.6 81.1 88.0 88.6 82.4 64.6 49.6 39.4 88.6
Year Highest Occurred 1994 1992 1992 1987 1993 1988 1985 1971 1990 1988 1999 1993 1971
Lowest Mean Max. Temperature (F) 16.4 22.3 38.8 42.2 54.7 63.8 69.0 72.4 59.1 49.5 22.8 17.9 16.4
Year Lowest Occurred 1979 1989 1975 1975 1996 1998 1993 1980 1985 1984 1985 1983 1979
Mean Temperature (F) 20.6 25.9 33.0 40.8 48.6 55.7 61.4 60.8 51.5 41.9 29.1 21.9 40.9
Highest Mean Temperature (F) 29.4 34.0 40.7 46.8 54.0 62.4 66.2 66.2 55.8 47.0 37.7 30.1 66.2
Year Highest Occurred 1994 1995 1992 1987 1993 1988 1985 1971 1998 1988 1999 1993 1971
Lowest Mean Temperature (F) 3.2 10.2 26.6 31.0 43.1 50.5 55.8 54.5 46.0 36.6 14.5 6.2 3.2
Year Lowest Occurred 1979 1989 1975 1975 1996 1995 1993 1980 1984 1984 1985 1983 1979
Mean Min. Temperature (F) 10.8 15.5 21.6 27.3 33.7 39.6 42.7 41.1 33.2 27.3 19.6 12.5 27.1
Highest Mean Min. Temperature (F) 20.0 24.5 28.9 33.8 38.5 43.7 47.6 46.2 37.4 34.1 27.9 21.3 47.6
Year Highest Occurred 1990 1998 1995 1995 2000 1992 1975 1994 1997 1994 1989 1980 1975
Lowest Mean Min. Temperature (F) -10.1 -1.9 14.5 19.7 30.8 35.2 37.8 36.5 28.4 21.9 6.2 -5.6 -10.1
Year Lowest Occurred 1979 1989 1975 1975 1975 1978 1984 1980 1989 1974 1985 1983 1979
Mean Precipitation (in.) 1.93 1.30 1.09 1.34 2.30 2.00 1.28 1.59 1.29 1.30 1.37 1.98 18.77
Highest Precipitation (in.) 5.94 3.19 2.60 4.54 5.46 5.17 3.95 4.83 3.78 3.75 2.55 5.37 5.94
Year Highest Occurred 1971 1986 1989 1975 1980 1998 1983 1989 1985 1975 1990 1977 1971
Lowest Precipitation (in.) 0.41 0.26 0.14 0.06 0.70 0.23 0.04 0.31 0.09 0.11 0.30 0.17 0.04
Year Lowest Occurred 1995 1973 1994 1977 1973 1985 1973 2000 1987 1978 1979 1993 1973
Heating Degree Days (F) 1378. 1096. 993. 728. 509. 287. 156. 169. 410. 719. 1078. 1337. 8860.
Cooling Degree Days (F) 0. 0. 0. 0. 0. 8. 42. 38. 3. 0. 0. 0. 91.

Western Regional Climate Center, wrcc@dri.edu