| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.8 | 34.8 | 38.8 | 44.4 | 55.1 | 66.3 | 71.4 | 68.8 | 62.5 | 53.3 | 40.0 | 32.3 | 50.0 |
| Highest Mean Max. Temperature (F) | 38.9 | 42.4 | 47.5 | 51.9 | 62.9 | 72.8 | 75.7 | 73.9 | 67.8 | 61.3 | 54.5 | 40.2 | 75.7 |
| Year Highest Occurred | 1981 | 1995 | 1999 | 2000 | 2000 | 1994 | 2000 | 1995 | 1979 | 1999 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 23.3 | 26.4 | 32.5 | 36.2 | 48.5 | 61.7 | 65.1 | 63.1 | 55.5 | 42.9 | 32.2 | 25.3 | 23.3 |
| Year Lowest Occurred | 1979 | 1982 | 1973 | 1973 | 1995 | 1983 | 1977 | 1977 | 1986 | 1984 | 1979 | 1978 | 1979 |
| Mean Temperature (F) | 13.8 | 16.9 | 23.2 | 30.6 | 40.8 | 49.0 | 54.4 | 52.9 | 46.4 | 37.1 | 23.7 | 14.9 | 33.6 |
| Highest Mean Temperature (F) | 20.4 | 24.2 | 32.7 | 37.0 | 46.5 | 54.0 | 58.4 | 57.7 | 51.1 | 40.9 | 33.1 | 24.4 | 58.4 |
| Year Highest Occurred | 1999 | 1995 | 1999 | 1992 | 1996 | 1994 | 1998 | 1995 | 1998 | 1999 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 7.2 | 10.3 | 17.2 | 24.1 | 35.5 | 46.2 | 51.2 | 49.3 | 42.2 | 29.3 | 16.4 | 8.5 | 7.2 |
| Year Lowest Occurred | 1984 | 1985 | 1987 | 1973 | 1975 | 1976 | 1977 | 1976 | 1985 | 1984 | 2000 | 1978 | 1984 |
| Mean Min. Temperature (F) | -4.2 | -1.1 | 7.5 | 16.8 | 26.4 | 31.6 | 37.4 | 37.0 | 30.3 | 20.9 | 7.4 | -2.5 | 17.3 |
| Highest Mean Min. Temperature (F) | 5.6 | 6.0 | 17.8 | 24.0 | 31.0 | 35.2 | 43.2 | 41.7 | 36.2 | 30.8 | 16.4 | 8.7 | 43.2 |
| Year Highest Occurred | 1980 | 1995 | 1999 | 1992 | 1992 | 2000 | 1998 | 2000 | 1997 | 1972 | 1973 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -16.1 | -9.9 | -2.8 | 11.2 | 21.2 | 27.0 | 31.7 | 31.8 | 23.7 | 15.7 | -1.0 | -10.4 | -16.1 |
| Year Lowest Occurred | 1984 | 1985 | 1987 | 1975 | 1975 | 1989 | 1987 | 1985 | 1987 | 1984 | 2000 | 1990 | 1984 |
| Mean Precipitation (in.) | 1.60 | 1.79 | 2.35 | 1.64 | 1.86 | 1.27 | 2.74 | 3.08 | 2.72 | 2.33 | 1.93 | 1.86 | 25.17 |
| Highest Precipitation (in.) | 4.18 | 5.20 | 6.53 | 5.87 | 5.34 | 3.55 | 5.54 | 5.79 | 6.68 | 6.23 | 5.32 | 6.40 | 6.68 |
| Year Highest Occurred | 1979 | 1989 | 1985 | 1999 | 1981 | 1984 | 1981 | 1999 | 1986 | 1972 | 1985 | 1981 | 1986 |
| Lowest Precipitation (in.) | 0.12 | 0.10 | 0.40 | 0.42 | 0.00 | 0.00 | 0.46 | 0.84 | 0.28 | 0.12 | 0.19 | 0.30 | 0.00 |
| Year Lowest Occurred | 1986 | 1972 | 1997 | 1982 | 1974 | 1980 | 1993 | 1974 | 1979 | 1995 | 1989 | 1976 | 1974 |
| Heating Degree Days (F) | 1589. | 1349. | 1297. | 1031. | 751. | 481. | 328. | 375. | 558. | 865. | 1239. | 1555. | 11418. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |