| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.5 | 36.2 | 42.5 | 49.5 | 59.6 | 70.9 | 75.9 | 74.1 | 67.7 | 56.6 | 40.0 | 32.0 | 53.0 |
| Highest Mean Max. Temperature (F) | 39.0 | 42.3 | 50.5 | 56.0 | 66.3 | 76.5 | 81.4 | 78.5 | 74.8 | 62.5 | 52.5 | 40.3 | 81.4 |
| Year Highest Occurred | 1981 | 1995 | 1999 | 1992 | 2000 | 1990 | 1978 | 1995 | 1998 | 1999 | 1999 | 1980 | 1978 |
| Lowest Mean Max. Temperature (F) | 22.6 | 29.3 | 36.3 | 41.7 | 54.3 | 65.9 | 71.7 | 68.4 | 61.0 | 46.9 | 31.7 | 25.6 | 22.6 |
| Year Lowest Occurred | 1979 | 1971 | 1971 | 1983 | 1983 | 1975 | 1973 | 1975 | 1972 | 1984 | 1979 | 1978 | 1979 |
| Mean Temperature (F) | 17.7 | 21.0 | 27.8 | 34.6 | 43.8 | 52.5 | 57.5 | 55.9 | 49.4 | 39.8 | 26.4 | 18.3 | 37.1 |
| Highest Mean Temperature (F) | 22.6 | 28.1 | 33.5 | 39.5 | 48.9 | 56.4 | 61.0 | 59.7 | 55.6 | 44.2 | 33.9 | 27.3 | 61.0 |
| Year Highest Occurred | 1986 | 1995 | 1999 | 1992 | 2000 | 1994 | 1998 | 1995 | 1998 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 10.3 | 12.4 | 21.3 | 25.7 | 39.7 | 48.7 | 54.2 | 51.2 | 44.7 | 34.4 | 18.3 | 13.2 | 10.3 |
| Year Lowest Occurred | 1979 | 1974 | 1977 | 1973 | 1975 | 1973 | 1973 | 1974 | 1971 | 1984 | 1979 | 1978 | 1979 |
| Mean Min. Temperature (F) | 3.8 | 5.8 | 13.0 | 19.6 | 27.9 | 34.0 | 39.0 | 37.7 | 31.1 | 22.9 | 12.8 | 4.6 | 21.0 |
| Highest Mean Min. Temperature (F) | 11.0 | 13.9 | 17.4 | 24.0 | 31.4 | 38.0 | 44.2 | 41.6 | 36.6 | 27.0 | 19.7 | 14.3 | 44.2 |
| Year Highest Occurred | 2000 | 1995 | 1989 | 1985 | 2000 | 1988 | 1998 | 2000 | 1997 | 1988 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -3.7 | -7.1 | 4.4 | 9.8 | 24.3 | 30.5 | 35.2 | 30.7 | 26.7 | 18.5 | 4.8 | -2.9 | -7.1 |
| Year Lowest Occurred | 1974 | 1974 | 1988 | 1973 | 1975 | 1973 | 1993 | 1974 | 1974 | 1973 | 1979 | 1976 | 1974 |
| Mean Precipitation (in.) | 1.83 | 1.51 | 1.52 | 1.96 | 2.05 | 1.49 | 2.11 | 2.15 | 1.68 | 1.50 | 1.37 | 1.58 | 20.75 |
| Highest Precipitation (in.) | 4.83 | 5.93 | 4.50 | 3.43 | 4.81 | 5.44 | 4.42 | 6.12 | 4.68 | 3.58 | 3.44 | 4.39 | 6.12 |
| Year Highest Occurred | 1980 | 1986 | 1983 | 1986 | 1995 | 1984 | 1973 | 1984 | 1985 | 1986 | 1985 | 1983 | 1984 |
| Lowest Precipitation (in.) | 0.33 | 0.33 | 0.40 | 0.78 | 0.18 | 0.10 | 0.35 | 0.33 | 0.11 | 0.14 | 0.61 | 0.17 | 0.10 |
| Year Lowest Occurred | 1981 | 1981 | 1976 | 1987 | 1974 | 1980 | 1994 | 1985 | 1979 | 1999 | 1998 | 1986 | 1980 |
| Heating Degree Days (F) | 1468. | 1231. | 1155. | 912. | 659. | 377. | 238. | 286. | 468. | 783. | 1158. | 1447. | 10182. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 3. | 3. | 0. | 0. | 0. | 0. | 6. |