date! ,

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 14.5 22.3 34.3 53.4 69.1 76.9 80.7 80.0 68.8 54.7 33.2 19.3 50.6
Highest Mean Max. Temperature (F) 29.9 33.9 45.0 66.0 79.1 87.6 86.8 86.6 76.2 59.5 46.5 31.7 87.6
Year Highest Occurred 1990 2000 2000 1987 1977 1988 1989 1983 1976 1973 1999 1999 1988
Lowest Mean Max. Temperature (F) 1.8 5.3 26.1 40.5 59.1 71.5 72.5 71.9 62.5 48.3 23.3 5.8 1.8
Year Lowest Occurred 1982 1979 1989 1979 1979 1993 1992 1977 1977 1991 1985 1983 1982
Mean Temperature (F) 5.3 12.9 25.6 42.2 56.5 65.3 69.2 67.8 57.0 44.3 25.6 11.0 40.2
Highest Mean Temperature (F) 19.2 25.0 35.3 52.1 66.2 73.7 75.4 73.8 62.1 50.2 36.4 22.6 75.4
Year Highest Occurred 1990 1987 1973 1987 1977 1988 1989 1983 1978 1973 1981 1997 1989
Lowest Mean Temperature (F) -8.0 -4.3 17.5 33.1 47.7 59.0 62.0 60.1 51.9 38.4 14.5 -0.7 -8.0
Year Lowest Occurred 1982 1979 1975 1979 1979 1982 1992 1977 1993 1991 1985 1983 1982
Mean Min. Temperature (F) -4.0 3.5 16.9 31.0 43.8 53.6 57.7 55.5 45.2 33.8 17.9 2.7 29.8
Highest Mean Min. Temperature (F) 8.9 19.3 28.2 38.2 53.3 59.9 64.0 60.9 50.1 40.8 28.9 15.6 64.0
Year Highest Occurred 1983 1998 1973 1987 1977 1988 1989 1983 1978 1973 1981 1997 1989
Lowest Mean Min. Temperature (F) -17.8 -13.8 7.7 25.1 36.2 46.5 51.5 48.3 38.8 26.3 5.7 -7.5 -17.8
Year Lowest Occurred 1982 1979 1979 1996 1979 1982 1992 1977 1974 1976 1985 2000 1982
Mean Precipitation (in.) 0.78 0.62 0.89 1.17 2.11 2.98 2.89 2.92 1.95 1.59 0.86 0.59 19.35
Highest Precipitation (in.) 2.65 1.73 2.42 3.60 5.17 5.47 7.40 5.51 5.37 4.58 2.75 2.05 7.40
Year Highest Occurred 1989 2000 1990 1979 1999 1984 1987 1980 1973 1982 1977 1996 1987
Lowest Precipitation (in.) 0.06 0.04 0.06 0.00 0.40 1.18 0.38 1.11 0.20 0.03 0.00 0.00 0.00
Year Lowest Occurred 1973 1993 1986 1988 1972 1972 1976 1982 1993 1992 1999 1994 1988
Heating Degree Days (F) 1854. 1459. 1221. 689. 304. 93. 44. 69. 259. 644. 1184. 1674. 9494.
Cooling Degree Days (F) 0. 0. 0. 4. 39. 100. 174. 155. 19. 0. 0. 0. 491.

Western Regional Climate Center, wrcc@dri.edu