MAHNOMEN 1 W, MINNESOTA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 13.1 21.2 33.4 51.6 67.2 75.0 79.2 78.8 68.1 54.2 33.5 18.7 49.5
Highest Mean Max. Temperature (F) 28.1 33.5 44.1 64.9 76.6 83.7 85.5 84.9 74.6 60.2 47.8 29.0 85.5
Year Highest Occurred 1990 1998 2000 1987 1977 1988 1988 1998 1998 1973 1999 1999 1988
Lowest Mean Max. Temperature (F) 1.2 8.2 23.9 40.2 56.1 68.8 70.9 72.3 61.6 45.8 24.2 4.7 1.2
Year Lowest Occurred 1979 1979 1975 1975 1979 1985 1992 1985 1985 1998 1985 1983 1979
Mean Temperature (F) 2.4 10.3 23.3 39.9 54.9 63.6 67.4 66.2 55.2 42.4 24.6 9.4 38.3
Highest Mean Temperature (F) 17.0 27.1 33.6 48.7 64.6 69.9 71.4 71.2 61.1 48.4 35.8 20.4 71.4
Year Highest Occurred 1990 1998 1973 1987 1977 1988 1989 1983 1998 1973 1999 1997 1989
Lowest Mean Temperature (F) -9.9 -4.2 13.1 32.2 46.1 57.2 60.5 59.7 50.5 36.2 13.5 -4.5 -9.9
Year Lowest Occurred 1982 1979 1975 1979 1979 1982 1992 1977 1984 1976 1985 1983 1982
Mean Min. Temperature (F) -8.3 -0.7 13.1 28.2 42.5 52.2 55.6 53.5 42.3 30.5 15.7 0.0 27.1
Highest Mean Min. Temperature (F) 5.9 20.6 25.6 32.6 52.7 58.1 59.5 57.9 47.5 37.8 24.3 13.3 59.5
Year Highest Occurred 1990 1998 1973 1987 1977 1995 1983 1996 1998 1994 1981 1997 1983
Lowest Mean Min. Temperature (F) -22.0 -16.5 2.3 22.7 36.2 44.7 50.0 46.7 36.7 22.1 2.9 -13.7 -22.0
Year Lowest Occurred 1982 1979 1975 1979 1983 1982 1992 1977 1974 1976 1985 1983 1982
Mean Precipitation (in.) 0.90 0.65 1.06 1.47 2.50 4.21 3.35 3.12 2.42 2.17 1.04 0.67 23.56
Highest Precipitation (in.) 2.00 1.36 2.01 4.91 7.28 10.99 9.88 7.68 10.77 8.19 2.93 1.72 10.99
Year Highest Occurred 1989 1979 1979 1986 1985 1975 1993 1992 1973 1984 1977 1996 1975
Lowest Precipitation (in.) 0.04 0.21 0.14 0.03 0.22 0.74 0.38 0.58 0.20 0.15 0.06 0.00 0.00
Year Lowest Occurred 1973 1993 1986 1980 1980 1972 1984 1996 1974 1986 1999 1998 1998
Heating Degree Days (F) 1943. 1535. 1294. 752. 342. 121. 51. 84. 307. 703. 1212. 1727. 10071.
Cooling Degree Days (F) 0. 0. 0. 0. 27. 79. 125. 120. 13. 0. 0. 0. 364.

Western Regional Climate Center, wrcc@dri.edu