| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 29.6 | 35.3 | 45.4 | 55.0 | 65.5 | 76.0 | 80.9 | 79.3 | 72.6 | 61.3 | 44.9 | 32.7 | 56.5 |
| Highest Mean Max. Temperature (F) | 41.2 | 45.3 | 53.3 | 62.7 | 71.5 | 81.5 | 84.1 | 82.8 | 78.5 | 66.1 | 54.6 | 44.2 | 84.1 |
| Year Highest Occurred | 1981 | 1977 | 1999 | 1992 | 1996 | 1994 | 1994 | 1995 | 1998 | 1988 | 1999 | 1980 | 1994 |
| Lowest Mean Max. Temperature (F) | 12.6 | 21.3 | 37.6 | 45.4 | 58.6 | 71.3 | 76.4 | 76.1 | 67.0 | 51.6 | 37.1 | 22.8 | 12.6 |
| Year Lowest Occurred | 1984 | 1974 | 1984 | 1984 | 1995 | 1984 | 1986 | 1999 | 1985 | 1984 | 1992 | 1978 | 1984 |
| Mean Temperature (F) | 13.3 | 18.6 | 29.9 | 38.7 | 47.4 | 56.0 | 61.7 | 60.5 | 52.9 | 41.7 | 28.7 | 16.5 | 38.8 |
| Highest Mean Temperature (F) | 22.0 | 28.2 | 36.8 | 43.9 | 51.6 | 59.6 | 65.0 | 63.4 | 57.6 | 45.6 | 32.8 | 27.3 | 65.0 |
| Year Highest Occurred | 1981 | 1995 | 1972 | 1992 | 1992 | 1988 | 1998 | 2000 | 1998 | 1992 | 1973 | 1980 | 1998 |
| Lowest Mean Temperature (F) | -3.1 | 2.5 | 21.4 | 31.4 | 43.9 | 52.1 | 58.4 | 56.5 | 49.1 | 37.7 | 21.6 | 7.0 | -3.1 |
| Year Lowest Occurred | 1984 | 1974 | 1984 | 1984 | 1971 | 1975 | 1995 | 1974 | 1971 | 1984 | 1993 | 1978 | 1984 |
| Mean Min. Temperature (F) | -3.1 | 1.9 | 14.3 | 22.3 | 29.3 | 36.0 | 42.4 | 41.7 | 33.2 | 22.1 | 12.4 | 0.3 | 21.1 |
| Highest Mean Min. Temperature (F) | 6.9 | 12.2 | 20.5 | 26.4 | 33.9 | 40.8 | 47.7 | 46.1 | 38.7 | 30.4 | 16.1 | 10.4 | 47.7 |
| Year Highest Occurred | 1980 | 1986 | 1972 | 1990 | 1992 | 1988 | 1998 | 1982 | 1990 | 1972 | 1996 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -18.8 | -16.3 | 5.1 | 17.4 | 24.6 | 31.4 | 38.9 | 36.3 | 29.2 | 14.6 | 5.3 | -8.8 | -18.8 |
| Year Lowest Occurred | 1984 | 1974 | 1984 | 1984 | 1971 | 1976 | 1971 | 1974 | 1971 | 1975 | 1993 | 1978 | 1984 |
| Mean Precipitation (in.) | 0.74 | 0.67 | 0.82 | 0.91 | 1.01 | 0.71 | 1.52 | 1.81 | 1.14 | 0.82 | 0.73 | 0.79 | 11.67 |
| Highest Precipitation (in.) | 2.43 | 2.12 | 1.72 | 2.59 | 3.16 | 2.14 | 3.66 | 4.08 | 3.59 | 2.30 | 1.81 | 3.58 | 4.08 |
| Year Highest Occurred | 1979 | 1986 | 1991 | 1990 | 1995 | 1997 | 1981 | 1971 | 1990 | 1998 | 1983 | 1983 | 1971 |
| Lowest Precipitation (in.) | 0.08 | 0.00 | 0.09 | 0.00 | 0.00 | 0.00 | 0.26 | 0.38 | 0.05 | 0.08 | 0.10 | 0.05 | 0.00 |
| Year Lowest Occurred | 1983 | 1972 | 1977 | 1979 | 1974 | 1980 | 1994 | 1996 | 1987 | 1976 | 1989 | 1982 | 1972 |
| Heating Degree Days (F) | 1605. | 1300. | 1089. | 791. | 546. | 272. | 119. | 154. | 365. | 722. | 1091. | 1503. | 9557. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 3. | 14. | 13. | 1. | 0. | 0. | 0. | 31. |