| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 10.6 | 14.5 | 25.2 | 39.0 | 54.1 | 64.8 | 67.6 | 61.8 | 50.8 | 32.2 | 18.0 | 13.7 | 37.7 |
| Highest Mean Max. Temperature (F) | 36.9 | 31.9 | 38.5 | 46.3 | 61.5 | 68.6 | 72.1 | 71.4 | 57.7 | 41.9 | 32.7 | 30.5 | 72.1 |
| Year Highest Occurred | 1981 | 1997 | 1981 | 1995 | 1981 | 1993 | 1990 | 1977 | 1974 | 1979 | 1979 | 1985 | 1990 |
| Lowest Mean Max. Temperature (F) | -7.2 | -2.9 | 9.9 | 27.4 | 46.5 | 60.3 | 61.5 | 54.3 | 36.2 | 20.8 | 5.4 | -11.1 | -11.1 |
| Year Lowest Occurred | 1971 | 1979 | 1971 | 1985 | 1992 | 1978 | 1981 | 2000 | 1992 | 1996 | 1977 | 1980 | 1980 |
| Mean Temperature (F) | 2.0 | 4.5 | 13.1 | 27.2 | 42.0 | 52.2 | 55.6 | 50.9 | 40.5 | 22.5 | 9.1 | 4.9 | 27.0 |
| Highest Mean Temperature (F) | 27.3 | 22.6 | 26.6 | 34.8 | 47.6 | 55.1 | 58.6 | 56.2 | 48.2 | 32.3 | 23.7 | 22.7 | 58.6 |
| Year Highest Occurred | 1981 | 1997 | 1981 | 1995 | 1981 | 1997 | 1993 | 1977 | 1995 | 1979 | 1979 | 1985 | 1993 |
| Lowest Mean Temperature (F) | -17.9 | -15.6 | -2.5 | 15.8 | 35.8 | 49.0 | 51.7 | 46.5 | 26.0 | 9.8 | -3.3 | -17.1 | -17.9 |
| Year Lowest Occurred | 1971 | 1979 | 1971 | 1985 | 1992 | 1978 | 1981 | 2000 | 1992 | 1996 | 1977 | 1980 | 1971 |
| Mean Min. Temperature (F) | -6.6 | -5.6 | 0.9 | 15.4 | 29.8 | 39.6 | 43.5 | 39.9 | 30.2 | 12.8 | 0.2 | -4.0 | 16.3 |
| Highest Mean Min. Temperature (F) | 17.7 | 13.3 | 14.7 | 23.4 | 34.4 | 42.7 | 47.2 | 43.7 | 38.8 | 23.4 | 14.7 | 14.9 | 47.2 |
| Year Highest Occurred | 1981 | 1997 | 1981 | 1998 | 1995 | 1997 | 1997 | 1994 | 1995 | 1987 | 1979 | 1985 | 1997 |
| Lowest Mean Min. Temperature (F) | -28.6 | -28.3 | -14.9 | 3.5 | 25.1 | 36.2 | 40.1 | 35.8 | 15.8 | -1.2 | -12.9 | -23.1 | -28.6 |
| Year Lowest Occurred | 1971 | 1979 | 1971 | 1972 | 1992 | 1974 | 1975 | 1975 | 1992 | 1996 | 1975 | 1980 | 1971 |
| Mean Precipitation (in.) | 0.70 | 0.54 | 0.38 | 0.27 | 0.67 | 2.22 | 3.09 | 2.62 | 1.76 | 1.05 | 0.78 | 0.89 | 14.97 |
| Highest Precipitation (in.) | 1.87 | 2.71 | 1.91 | 1.13 | 1.67 | 5.67 | 7.67 | 5.76 | 4.72 | 3.35 | 2.11 | 3.45 | 7.67 |
| Year Highest Occurred | 1975 | 1996 | 1991 | 1980 | 1999 | 1994 | 1986 | 2000 | 1992 | 1991 | 1990 | 1984 | 1986 |
| Lowest Precipitation (in.) | 0.05 | 0.00 | 0.00 | 0.00 | 0.11 | 0.45 | 0.76 | 0.56 | 0.39 | 0.16 | 0.12 | 0.10 | 0.00 |
| Year Lowest Occurred | 1974 | 1973 | 1998 | 1993 | 1972 | 1976 | 1994 | 1982 | 1994 | 1987 | 1983 | 2000 | 1973 |
| Heating Degree Days (F) | 1956. | 1698. | 1611. | 1134. | 715. | 385. | 294. | 439. | 735. | 1319. | 1678. | 1866. | 13830. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |