| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.0 | 40.0 | 44.0 | 51.0 | 61.3 | 72.7 | 77.1 | 74.9 | 68.6 | 59.2 | 45.0 | 37.8 | 55.7 |
| Highest Mean Max. Temperature (F) | 44.5 | 47.3 | 50.4 | 62.1 | 67.6 | 80.0 | 81.8 | 77.9 | 76.4 | 65.1 | 55.4 | 47.1 | 81.8 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1992 | 1984 | 1990 | 1980 | 1985 | 1979 | 1992 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 28.5 | 34.3 | 38.9 | 43.5 | 52.4 | 66.8 | 73.0 | 68.6 | 63.3 | 48.5 | 37.3 | 32.8 | 28.5 |
| Year Lowest Occurred | 1979 | 1994 | 1975 | 1975 | 1995 | 1995 | 1999 | 1999 | 1986 | 1984 | 2000 | 1978 | 1979 |
| Mean Temperature (F) | 19.4 | 23.1 | 29.0 | 36.4 | 45.7 | 54.3 | 59.0 | 57.8 | 51.0 | 41.3 | 28.3 | 20.5 | 38.8 |
| Highest Mean Temperature (F) | 25.2 | 28.5 | 35.3 | 43.7 | 49.6 | 59.3 | 61.9 | 60.2 | 55.2 | 45.4 | 34.6 | 29.2 | 61.9 |
| Year Highest Occurred | 1993 | 1995 | 1999 | 1992 | 1984 | 1990 | 1989 | 2000 | 1998 | 1992 | 1999 | 1980 | 1989 |
| Lowest Mean Temperature (F) | 13.3 | 19.1 | 24.5 | 30.1 | 41.5 | 50.5 | 56.1 | 54.5 | 47.4 | 34.8 | 21.9 | 15.5 | 13.3 |
| Year Lowest Occurred | 1979 | 1985 | 1980 | 1973 | 1995 | 1995 | 1995 | 1976 | 1971 | 1984 | 1992 | 1978 | 1979 |
| Mean Min. Temperature (F) | 1.8 | 6.2 | 14.0 | 21.7 | 30.1 | 35.8 | 40.9 | 40.6 | 33.4 | 23.4 | 11.6 | 3.1 | 21.9 |
| Highest Mean Min. Temperature (F) | 11.5 | 14.0 | 20.9 | 26.1 | 32.3 | 38.9 | 44.6 | 43.7 | 39.0 | 28.4 | 17.0 | 11.3 | 44.6 |
| Year Highest Occurred | 1993 | 1993 | 1999 | 1989 | 1989 | 1988 | 1999 | 2000 | 1998 | 1972 | 1996 | 1980 | 1999 |
| Lowest Mean Min. Temperature (F) | -3.9 | -0.7 | 8.1 | 14.9 | 26.9 | 32.2 | 38.6 | 34.5 | 28.8 | 14.6 | 5.2 | -2.9 | -3.9 |
| Year Lowest Occurred | 1984 | 1974 | 1987 | 1973 | 1972 | 1975 | 1995 | 1975 | 1971 | 1976 | 1979 | 1990 | 1984 |
| Mean Precipitation (in.) | 1.70 | 1.53 | 2.18 | 1.97 | 2.04 | 1.28 | 2.43 | 2.58 | 2.27 | 2.06 | 1.89 | 1.49 | 23.42 |
| Highest Precipitation (in.) | 4.07 | 3.68 | 4.06 | 4.49 | 4.27 | 3.60 | 6.29 | 6.27 | 4.54 | 5.26 | 4.98 | 5.09 | 6.29 |
| Year Highest Occurred | 1979 | 1993 | 1995 | 1990 | 1992 | 1984 | 1999 | 1982 | 1982 | 1996 | 1986 | 1983 | 1999 |
| Lowest Precipitation (in.) | 0.33 | 0.28 | 0.46 | 0.42 | 0.13 | 0.08 | 0.14 | 0.53 | 0.12 | 0.27 | 0.24 | 0.09 | 0.08 |
| Year Lowest Occurred | 1986 | 1972 | 1997 | 1989 | 1974 | 1980 | 1993 | 1974 | 1979 | 1999 | 1989 | 1976 | 1980 |
| Heating Degree Days (F) | 1413. | 1174. | 1116. | 859. | 600. | 325. | 186. | 225. | 421. | 736. | 1102. | 1381. | 9538. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 2. | 1. | 0. | 0. | 0. | 0. | 0. | 3. |