| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 23.9 | 30.3 | 38.2 | 46.8 | 58.3 | 68.8 | 77.7 | 76.7 | 65.5 | 51.7 | 32.8 | 23.6 | 49.5 |
| Highest Mean Max. Temperature (F) | 32.0 | 36.9 | 46.8 | 56.5 | 68.4 | 77.8 | 83.5 | 83.8 | 74.9 | 62.1 | 43.7 | 31.7 | 83.8 |
| Year Highest Occurred | 1986 | 1991 | 1992 | 1987 | 1992 | 1988 | 1988 | 1994 | 1990 | 1988 | 1999 | 1980 | 1994 |
| Lowest Mean Max. Temperature (F) | 13.6 | 24.3 | 32.6 | 37.9 | 51.0 | 60.9 | 67.5 | 70.2 | 55.8 | 45.9 | 22.2 | 13.8 | 13.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1975 | 1998 | 1993 | 1980 | 1985 | 1984 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 12.7 | 17.3 | 25.1 | 33.7 | 43.8 | 52.6 | 59.2 | 57.6 | 47.8 | 36.8 | 21.8 | 12.4 | 35.1 |
| Highest Mean Temperature (F) | 19.5 | 23.4 | 32.3 | 40.2 | 50.4 | 58.9 | 63.1 | 61.5 | 54.4 | 44.3 | 30.3 | 21.4 | 63.1 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1992 | 1992 | 1988 | 1989 | 1983 | 1990 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Temperature (F) | 1.3 | 8.9 | 18.3 | 26.0 | 38.1 | 47.8 | 51.8 | 52.6 | 41.1 | 32.0 | 13.0 | 2.7 | 1.3 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1975 | 1998 | 1993 | 1975 | 1971 | 1984 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 1.4 | 4.2 | 11.9 | 20.6 | 29.3 | 36.3 | 40.7 | 38.5 | 30.1 | 21.9 | 10.8 | 1.2 | 20.6 |
| Highest Mean Min. Temperature (F) | 8.6 | 11.1 | 19.8 | 25.6 | 34.5 | 40.0 | 44.5 | 44.1 | 36.6 | 26.5 | 19.0 | 11.1 | 44.5 |
| Year Highest Occurred | 1994 | 1983 | 1986 | 1990 | 1987 | 1988 | 1998 | 1983 | 1998 | 1988 | 1995 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -11.1 | -6.6 | 1.9 | 13.0 | 24.6 | 32.4 | 36.0 | 33.9 | 24.9 | 17.7 | 0.7 | -10.4 | -11.1 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1982 | 1973 | 1976 | 1993 | 1978 | 1975 | 1987 | 1979 | 1978 | 1979 |
| Mean Precipitation (in.) | 1.96 | 1.77 | 1.82 | 1.51 | 2.19 | 2.21 | 1.84 | 1.36 | 1.47 | 1.30 | 2.01 | 2.30 | 21.74 |
| Highest Precipitation (in.) | 3.96 | 3.55 | 5.17 | 3.85 | 4.12 | 4.45 | 4.12 | 3.37 | 3.53 | 3.45 | 6.38 | 6.62 | 6.62 |
| Year Highest Occurred | 1989 | 1999 | 1974 | 1995 | 1996 | 1998 | 1995 | 1977 | 1972 | 1991 | 1973 | 1994 | 1994 |
| Lowest Precipitation (in.) | 0.36 | 0.37 | 0.34 | 0.41 | 0.70 | 0.66 | 0.43 | 0.07 | 0.05 | 0.00 | 0.13 | 0.11 | 0.00 |
| Year Lowest Occurred | 1985 | 1977 | 1978 | 1977 | 1986 | 1985 | 1999 | 1988 | 1974 | 1978 | 1976 | 1986 | 1978 |
| Heating Degree Days (F) | 1623. | 1336. | 1238. | 940. | 658. | 376. | 199. | 244. | 517. | 875. | 1296. | 1632. | 10934. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 2. | 19. | 13. | 1. | 0. | 0. | 0. | 35. |