| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 21.8 | 25.2 | 31.0 | 36.9 | 45.7 | 55.4 | 61.4 | 60.3 | 53.1 | 42.4 | 29.7 | 23.4 | 40.5 |
| Highest Mean Max. Temperature (F) | 30.6 | 31.0 | 37.4 | 42.8 | 51.6 | 60.8 | 65.1 | 64.4 | 58.9 | 47.1 | 39.9 | 33.0 | 65.1 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1981 | 2000 | 1994 | 2000 | 2000 | 1998 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 14.9 | 20.1 | 25.9 | 30.7 | 39.5 | 49.5 | 56.7 | 57.2 | 48.2 | 34.1 | 22.0 | 18.6 | 14.9 |
| Year Lowest Occurred | 1979 | 1985 | 1977 | 1983 | 1995 | 1975 | 1992 | 1987 | 1985 | 1984 | 2000 | 1978 | 1979 |
| Mean Temperature (F) | 12.1 | 14.4 | 19.3 | 25.6 | 34.6 | 44.2 | 50.2 | 49.6 | 42.4 | 31.8 | 19.6 | 13.3 | 29.8 |
| Highest Mean Temperature (F) | 19.1 | 19.8 | 24.7 | 31.2 | 38.8 | 48.4 | 52.9 | 52.6 | 47.6 | 35.7 | 25.7 | 23.0 | 52.9 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1981 | 2000 | 1977 | 2000 | 2000 | 1998 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 4.7 | 8.5 | 14.6 | 19.2 | 30.1 | 39.2 | 46.8 | 47.5 | 38.1 | 24.6 | 12.3 | 7.9 | 4.7 |
| Year Lowest Occurred | 1979 | 1985 | 1977 | 1973 | 1983 | 1975 | 1992 | 1992 | 1971 | 1984 | 2000 | 1978 | 1979 |
| Mean Min. Temperature (F) | 2.4 | 3.6 | 7.6 | 14.2 | 23.5 | 33.0 | 38.9 | 38.8 | 31.6 | 21.1 | 9.5 | 3.2 | 19.0 |
| Highest Mean Min. Temperature (F) | 7.7 | 8.5 | 12.2 | 19.5 | 26.1 | 36.7 | 41.8 | 42.0 | 36.2 | 24.7 | 14.8 | 12.9 | 42.0 |
| Year Highest Occurred | 1999 | 1995 | 1978 | 1981 | 1974 | 1988 | 1999 | 1983 | 1998 | 1974 | 1981 | 1980 | 1983 |
| Lowest Mean Min. Temperature (F) | -5.6 | -3.2 | 3.2 | 7.4 | 19.6 | 28.9 | 36.3 | 35.8 | 26.4 | 15.0 | 2.6 | -2.9 | -5.6 |
| Year Lowest Occurred | 1979 | 1985 | 1973 | 1973 | 1983 | 1975 | 1995 | 1978 | 1971 | 1984 | 2000 | 1990 | 1979 |
| Mean Precipitation (in.) | 3.09 | 2.60 | 3.65 | 4.49 | 3.99 | 2.11 | 2.25 | 2.75 | 2.24 | 2.30 | 3.37 | 2.68 | 35.52 |
| Highest Precipitation (in.) | 7.37 | 4.55 | 6.72 | 8.79 | 7.95 | 4.31 | 4.34 | 6.68 | 5.73 | 5.80 | 7.67 | 8.45 | 8.79 |
| Year Highest Occurred | 1980 | 1971 | 1983 | 1999 | 1995 | 1974 | 1981 | 1983 | 1997 | 1984 | 1983 | 1983 | 1999 |
| Lowest Precipitation (in.) | 0.83 | 0.98 | 1.03 | 1.54 | 0.59 | 0.00 | 0.98 | 0.36 | 0.40 | 0.39 | 0.94 | 0.87 | 0.00 |
| Year Lowest Occurred | 1986 | 1992 | 1999 | 1992 | 1974 | 1980 | 1978 | 1978 | 1979 | 1988 | 1999 | 1986 | 1980 |
| Heating Degree Days (F) | 1641. | 1417. | 1417. | 1185. | 942. | 624. | 460. | 479. | 680. | 1031. | 1363. | 1604. | 12843. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |