| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 23.1 | 27.6 | 35.4 | 43.5 | 55.9 | 68.1 | 73.8 | 72.7 | 65.0 | 54.1 | 37.2 | 26.1 | 48.5 |
| Highest Mean Max. Temperature (F) | 31.8 | 35.7 | 42.9 | 50.7 | 62.4 | 74.2 | 77.4 | 75.3 | 70.6 | 59.3 | 50.2 | 37.0 | 77.4 |
| Year Highest Occurred | 1981 | 1991 | 1999 | 2000 | 2000 | 1990 | 1989 | 1995 | 1998 | 1978 | 1999 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 14.6 | 20.0 | 30.1 | 37.7 | 47.0 | 61.9 | 68.4 | 69.1 | 57.6 | 45.9 | 29.1 | 18.9 | 14.6 |
| Year Lowest Occurred | 1984 | 1974 | 1984 | 1973 | 1995 | 1975 | 1975 | 1993 | 1986 | 1984 | 1992 | 1978 | 1984 |
| Mean Temperature (F) | 8.4 | 12.3 | 21.4 | 30.5 | 41.9 | 50.7 | 56.0 | 55.2 | 47.8 | 37.9 | 23.0 | 11.1 | 33.0 |
| Highest Mean Temperature (F) | 16.0 | 19.1 | 27.5 | 37.1 | 46.2 | 53.8 | 58.5 | 58.5 | 52.2 | 40.7 | 30.3 | 21.7 | 58.5 |
| Year Highest Occurred | 2000 | 1995 | 1999 | 1992 | 2000 | 1977 | 1998 | 1983 | 1998 | 1992 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | -3.2 | 2.0 | 15.1 | 25.1 | 36.9 | 46.3 | 52.9 | 50.8 | 43.9 | 33.5 | 14.0 | 5.6 | -3.2 |
| Year Lowest Occurred | 1984 | 1974 | 1987 | 1984 | 1995 | 1975 | 1995 | 1974 | 1985 | 1984 | 1992 | 1988 | 1984 |
| Mean Min. Temperature (F) | -6.4 | -3.0 | 7.3 | 17.5 | 27.9 | 33.2 | 38.2 | 37.7 | 30.6 | 21.6 | 8.7 | -4.0 | 17.4 |
| Highest Mean Min. Temperature (F) | 3.7 | 5.3 | 16.5 | 24.0 | 31.4 | 35.5 | 43.0 | 41.7 | 34.3 | 28.5 | 15.4 | 6.6 | 43.0 |
| Year Highest Occurred | 1980 | 1993 | 1972 | 1990 | 1992 | 1981 | 1999 | 1983 | 1997 | 1972 | 1981 | 1977 | 1999 |
| Lowest Mean Min. Temperature (F) | -20.9 | -16.0 | -2.3 | 11.7 | 24.5 | 30.7 | 34.6 | 31.9 | 26.4 | 16.7 | -1.1 | -11.9 | -20.9 |
| Year Lowest Occurred | 1984 | 1974 | 1987 | 1984 | 1975 | 1979 | 1987 | 1974 | 1987 | 1975 | 1992 | 1991 | 1984 |
| Mean Precipitation (in.) | 2.58 | 2.44 | 2.36 | 1.82 | 1.63 | 1.17 | 1.90 | 2.00 | 1.97 | 1.76 | 2.09 | 2.15 | 23.87 |
| Highest Precipitation (in.) | 7.12 | 6.42 | 4.96 | 4.01 | 4.81 | 2.77 | 3.53 | 4.24 | 4.89 | 3.66 | 4.19 | 6.20 | 7.12 |
| Year Highest Occurred | 1980 | 1993 | 1995 | 1999 | 1995 | 1984 | 1990 | 2000 | 1985 | 1996 | 1985 | 1978 | 1980 |
| Lowest Precipitation (in.) | 0.46 | 0.35 | 0.70 | 0.54 | 0.12 | 0.00 | 0.30 | 0.66 | 0.14 | 0.16 | 0.44 | 0.01 | 0.00 |
| Year Lowest Occurred | 1981 | 1977 | 1997 | 1981 | 1998 | 1980 | 1994 | 1975 | 1979 | 1973 | 1999 | 1976 | 1980 |
| Heating Degree Days (F) | 1758. | 1476. | 1352. | 1035. | 716. | 431. | 279. | 304. | 516. | 841. | 1262. | 1674. | 11644. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |