| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 33.4 | 39.0 | 44.3 | 49.9 | 62.2 | 72.5 | 76.4 | 73.3 | 68.3 | 59.6 | 44.6 | 33.8 | 54.8 |
| Highest Mean Max. Temperature (F) | 47.6 | 48.9 | 56.3 | 58.3 | 69.5 | 78.2 | 80.1 | 76.4 | 73.0 | 64.2 | 56.9 | 45.7 | 80.1 |
| Year Highest Occurred | 1981 | 1996 | 1994 | 1977 | 1996 | 1994 | 1989 | 1983 | 1979 | 1987 | 1989 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 20.1 | 26.8 | 33.8 | 38.3 | 54.1 | 67.7 | 72.6 | 68.0 | 62.1 | 49.2 | 34.3 | 24.9 | 20.1 |
| Year Lowest Occurred | 1975 | 1975 | 1976 | 1980 | 1980 | 1995 | 1981 | 1999 | 1986 | 1984 | 1972 | 1990 | 1975 |
| Mean Temperature (F) | 12.5 | 17.3 | 24.2 | 31.5 | 43.3 | 51.4 | 56.9 | 55.3 | 48.5 | 39.2 | 24.9 | 13.9 | 34.9 |
| Highest Mean Temperature (F) | 21.6 | 28.3 | 33.9 | 37.7 | 47.3 | 54.9 | 60.0 | 58.9 | 51.8 | 42.0 | 32.9 | 26.0 | 60.0 |
| Year Highest Occurred | 1981 | 1996 | 1994 | 1992 | 1996 | 1988 | 1998 | 1983 | 1997 | 1987 | 1989 | 1989 | 1998 |
| Lowest Mean Temperature (F) | 4.1 | 8.1 | 11.3 | 17.6 | 37.6 | 46.6 | 53.7 | 52.3 | 44.7 | 33.3 | 14.4 | 4.7 | 4.1 |
| Year Lowest Occurred | 1975 | 1975 | 1975 | 1980 | 1999 | 1999 | 1973 | 1974 | 1973 | 1984 | 1972 | 1990 | 1975 |
| Mean Min. Temperature (F) | -8.5 | -4.5 | 4.1 | 13.0 | 24.3 | 30.3 | 37.3 | 37.2 | 28.6 | 18.7 | 5.2 | -6.1 | 15.0 |
| Highest Mean Min. Temperature (F) | 3.6 | 7.7 | 14.2 | 20.8 | 29.3 | 35.1 | 43.2 | 42.3 | 34.1 | 24.3 | 12.6 | 3.9 | 43.2 |
| Year Highest Occurred | 2000 | 1996 | 1999 | 2000 | 1992 | 1988 | 1998 | 1982 | 1982 | 1972 | 1981 | 1998 | 1998 |
| Lowest Mean Min. Temperature (F) | -17.8 | -15.9 | -8.1 | -3.2 | 18.4 | 26.1 | 33.0 | 31.8 | 22.7 | 12.8 | -5.6 | -15.8 | -17.8 |
| Year Lowest Occurred | 1973 | 1993 | 1980 | 1980 | 1974 | 1974 | 1973 | 1978 | 1973 | 1973 | 1972 | 1991 | 1973 |
| Mean Precipitation (in.) | 0.70 | 0.73 | 1.20 | 1.04 | 1.02 | 0.82 | 2.22 | 2.49 | 1.44 | 1.47 | 1.18 | 0.79 | 15.10 |
| Highest Precipitation (in.) | 2.55 | 2.55 | 3.81 | 2.95 | 2.70 | 3.44 | 5.10 | 4.35 | 4.14 | 5.05 | 4.65 | 3.05 | 5.10 |
| Year Highest Occurred | 1975 | 1987 | 2000 | 1990 | 1992 | 1995 | 1981 | 2000 | 1997 | 1972 | 1978 | 1978 | 1981 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.04 | 0.04 | 0.00 | 0.15 | 0.30 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1999 | 1991 | 1997 | 1989 | 1996 | 1998 | 1993 | 1975 | 1993 | 1995 | 1989 | 1999 | 1999 |
| Heating Degree Days (F) | 1630. | 1338. | 1272. | 1005. | 679. | 413. | 254. | 302. | 497. | 803. | 1203. | 1580. | 10976. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |