| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.2 | 33.8 | 40.4 | 49.5 | 60.7 | 70.8 | 75.9 | 74.8 | 67.4 | 56.3 | 40.0 | 31.5 | 52.6 |
| Highest Mean Max. Temperature (F) | 40.5 | 40.4 | 47.1 | 56.6 | 67.3 | 75.8 | 80.7 | 78.3 | 73.7 | 61.6 | 52.4 | 43.2 | 80.7 |
| Year Highest Occurred | 1981 | 1976 | 1999 | 1981 | 1974 | 1994 | 2000 | 2000 | 1998 | 1992 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 22.2 | 24.3 | 32.8 | 41.6 | 53.4 | 65.6 | 72.2 | 70.1 | 61.3 | 46.8 | 31.2 | 24.6 | 22.2 |
| Year Lowest Occurred | 1979 | 1985 | 1977 | 1984 | 1995 | 1983 | 1986 | 1987 | 1986 | 1984 | 2000 | 1990 | 1979 |
| Mean Temperature (F) | 17.3 | 20.3 | 27.5 | 36.3 | 46.2 | 54.8 | 60.5 | 59.4 | 51.4 | 41.0 | 27.2 | 19.0 | 38.4 |
| Highest Mean Temperature (F) | 25.1 | 28.1 | 33.4 | 42.3 | 50.0 | 59.5 | 63.7 | 63.5 | 56.8 | 46.7 | 36.0 | 29.8 | 63.7 |
| Year Highest Occurred | 1981 | 1995 | 1999 | 1981 | 1993 | 1988 | 2000 | 2000 | 1998 | 1992 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 9.5 | 9.5 | 19.9 | 29.6 | 41.8 | 51.1 | 57.8 | 55.9 | 46.8 | 34.3 | 19.0 | 12.1 | 9.5 |
| Year Lowest Occurred | 1979 | 1985 | 1977 | 1984 | 1983 | 1998 | 1986 | 1974 | 1985 | 1984 | 2000 | 1990 | 1985 |
| Mean Min. Temperature (F) | 4.4 | 6.8 | 14.6 | 23.1 | 31.7 | 38.8 | 45.0 | 44.0 | 35.4 | 25.7 | 14.3 | 6.5 | 24.2 |
| Highest Mean Min. Temperature (F) | 12.4 | 16.3 | 20.4 | 28.4 | 38.1 | 45.4 | 48.6 | 48.7 | 40.3 | 31.7 | 21.5 | 18.2 | 48.7 |
| Year Highest Occurred | 2000 | 1995 | 1993 | 1992 | 1993 | 1988 | 1998 | 2000 | 1997 | 1992 | 1995 | 1977 | 2000 |
| Lowest Mean Min. Temperature (F) | -3.2 | -5.7 | 6.6 | 16.0 | 28.1 | 34.6 | 41.9 | 35.8 | 29.0 | 19.8 | 4.5 | -2.2 | -5.7 |
| Year Lowest Occurred | 1979 | 1974 | 1976 | 1982 | 1982 | 1982 | 1972 | 1974 | 1974 | 1976 | 1979 | 1978 | 1974 |
| Mean Precipitation (in.) | 1.25 | 0.99 | 1.29 | 1.39 | 1.60 | 1.33 | 2.05 | 1.67 | 1.43 | 1.27 | 1.25 | 1.17 | 16.69 |
| Highest Precipitation (in.) | 2.89 | 3.16 | 3.13 | 2.86 | 3.47 | 2.65 | 3.97 | 3.81 | 3.90 | 3.62 | 2.98 | 3.17 | 3.97 |
| Year Highest Occurred | 1996 | 1996 | 1989 | 1999 | 1995 | 1984 | 1973 | 1997 | 1997 | 1972 | 1985 | 1983 | 1973 |
| Lowest Precipitation (in.) | 0.37 | 0.13 | 0.39 | 0.47 | 0.15 | 0.10 | 0.37 | 0.43 | 0.26 | 0.36 | 0.30 | 0.31 | 0.10 |
| Year Lowest Occurred | 1984 | 1973 | 1986 | 1980 | 1998 | 1980 | 1993 | 1974 | 1979 | 1999 | 1999 | 1986 | 1980 |
| Heating Degree Days (F) | 1478. | 1252. | 1163. | 862. | 584. | 310. | 147. | 181. | 410. | 745. | 1136. | 1427. | 9695. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 2. | 6. | 7. | 0. | 0. | 0. | 0. | 15. |