| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 26.6 | 29.1 | 36.0 | 44.1 | 53.1 | 61.5 | 65.5 | 63.3 | 55.3 | 42.4 | 32.4 | 28.6 | 44.8 |
| Highest Mean Max. Temperature (F) | 43.4 | 40.7 | 43.3 | 48.7 | 58.7 | 66.5 | 74.0 | 67.7 | 60.7 | 47.8 | 43.8 | 38.2 | 74.0 |
| Year Highest Occurred | 1977 | 1977 | 1984 | 1990 | 1997 | 1997 | 1972 | 1978 | 1974 | 1979 | 1976 | 1985 | 1972 |
| Lowest Mean Max. Temperature (F) | 8.0 | 15.8 | 27.1 | 38.5 | 45.2 | 55.1 | 61.2 | 58.9 | 48.6 | 33.9 | 21.8 | 9.9 | 8.0 |
| Year Lowest Occurred | 1971 | 1979 | 1972 | 1985 | 1971 | 1971 | 1981 | 1981 | 1992 | 1996 | 1990 | 1980 | 1971 |
| Mean Temperature (F) | 20.4 | 22.2 | 27.7 | 35.8 | 44.3 | 52.2 | 56.7 | 54.8 | 47.4 | 35.8 | 26.3 | 22.5 | 37.2 |
| Highest Mean Temperature (F) | 37.2 | 35.7 | 35.6 | 39.2 | 49.0 | 55.8 | 60.0 | 57.8 | 52.3 | 41.9 | 36.9 | 33.0 | 60.0 |
| Year Highest Occurred | 1977 | 1977 | 1981 | 1990 | 1981 | 1997 | 1997 | 1978 | 1995 | 1979 | 1976 | 1985 | 1997 |
| Lowest Mean Temperature (F) | 1.6 | 7.6 | 16.6 | 27.9 | 38.9 | 47.9 | 54.0 | 52.0 | 39.3 | 27.1 | 14.2 | 3.6 | 1.6 |
| Year Lowest Occurred | 1971 | 1979 | 1972 | 1972 | 1971 | 1971 | 1971 | 1973 | 1992 | 1996 | 1990 | 1980 | 1971 |
| Mean Min. Temperature (F) | 14.2 | 15.2 | 19.4 | 27.4 | 35.5 | 42.9 | 47.8 | 46.2 | 39.5 | 29.2 | 20.2 | 16.4 | 29.5 |
| Highest Mean Min. Temperature (F) | 31.0 | 30.8 | 28.0 | 32.0 | 39.7 | 46.4 | 51.4 | 50.1 | 46.9 | 36.0 | 30.0 | 27.8 | 51.4 |
| Year Highest Occurred | 1977 | 1997 | 1981 | 1995 | 1993 | 1990 | 1997 | 1989 | 1995 | 1979 | 1976 | 1985 | 1997 |
| Lowest Mean Min. Temperature (F) | -4.8 | -0.7 | 6.0 | 16.8 | 32.5 | 40.2 | 45.1 | 42.5 | 30.0 | 20.3 | 6.6 | -2.8 | -4.8 |
| Year Lowest Occurred | 1971 | 1979 | 1972 | 1972 | 1971 | 1985 | 1972 | 1973 | 1992 | 1996 | 1990 | 1980 | 1971 |
| Mean Precipitation (in.) | 7.32 | 5.17 | 4.50 | 5.40 | 3.40 | 2.22 | 2.34 | 4.31 | 8.18 | 7.55 | 6.50 | 7.61 | 64.50 |
| Highest Precipitation (in.) | 28.34 | 15.35 | 11.39 | 13.92 | 12.18 | 7.15 | 5.15 | 11.05 | 15.15 | 19.46 | 20.25 | 16.54 | 28.34 |
| Year Highest Occurred | 1981 | 1980 | 1981 | 1988 | 1971 | 1987 | 1981 | 1981 | 1995 | 1980 | 1976 | 1986 | 1981 |
| Lowest Precipitation (in.) | 0.75 | 0.21 | 0.87 | 0.78 | 0.64 | 0.71 | 0.57 | 1.22 | 1.00 | 1.68 | 0.45 | 0.49 | 0.21 |
| Year Lowest Occurred | 1982 | 1979 | 1983 | 1981 | 1981 | 1976 | 1973 | 1987 | 1981 | 1997 | 1975 | 1972 | 1979 |
| Heating Degree Days (F) | 1382. | 1200. | 1157. | 878. | 642. | 384. | 258. | 317. | 528. | 905. | 1162. | 1317. | 10130. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |