| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 28.3 | 34.4 | 45.0 | 57.9 | 69.6 | 79.6 | 86.2 | 84.7 | 75.7 | 62.0 | 42.5 | 31.7 | 58.1 |
| Highest Mean Max. Temperature (F) | 42.1 | 45.9 | 55.8 | 66.2 | 76.0 | 89.0 | 93.6 | 91.0 | 83.4 | 67.3 | 58.8 | 43.1 | 93.6 |
| Year Highest Occurred | 1990 | 1999 | 2000 | 1981 | 1987 | 1988 | 1974 | 1983 | 1998 | 1974 | 1999 | 1979 | 1974 |
| Lowest Mean Max. Temperature (F) | 12.3 | 16.4 | 35.2 | 48.3 | 62.2 | 73.8 | 74.9 | 76.5 | 67.2 | 58.0 | 26.4 | 11.5 | 11.5 |
| Year Lowest Occurred | 1978 | 1978 | 1998 | 1983 | 1995 | 1982 | 1992 | 1992 | 1985 | 1972 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 17.3 | 23.3 | 33.4 | 45.5 | 57.6 | 67.4 | 73.5 | 71.4 | 61.7 | 48.6 | 32.0 | 21.1 | 46.1 |
| Highest Mean Temperature (F) | 30.7 | 34.1 | 41.3 | 52.2 | 63.3 | 75.3 | 78.9 | 77.1 | 68.4 | 51.8 | 44.0 | 30.0 | 78.9 |
| Year Highest Occurred | 1990 | 1999 | 1986 | 1981 | 1987 | 1988 | 1974 | 1983 | 1998 | 1973 | 1999 | 1999 | 1974 |
| Lowest Mean Temperature (F) | 1.8 | 7.6 | 25.5 | 39.1 | 53.2 | 62.2 | 65.5 | 63.8 | 55.9 | 44.8 | 17.8 | 2.3 | 1.8 |
| Year Lowest Occurred | 1978 | 1979 | 1996 | 1983 | 1995 | 1982 | 1992 | 1985 | 1993 | 1976 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 6.3 | 12.2 | 21.7 | 33.1 | 45.5 | 55.2 | 60.7 | 58.1 | 47.6 | 35.1 | 21.5 | 10.4 | 34.0 |
| Highest Mean Min. Temperature (F) | 19.3 | 24.3 | 28.5 | 39.8 | 51.2 | 61.7 | 64.4 | 63.2 | 53.4 | 39.7 | 29.1 | 20.5 | 64.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1998 | 1994 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -8.8 | -4.2 | 13.1 | 28.8 | 41.3 | 49.7 | 55.8 | 49.9 | 41.8 | 30.9 | 9.2 | -7.0 | -8.8 |
| Year Lowest Occurred | 1978 | 1979 | 1996 | 1982 | 1983 | 1985 | 1971 | 1985 | 1984 | 1976 | 1985 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.49 | 0.63 | 1.52 | 2.68 | 3.78 | 3.34 | 2.97 | 2.17 | 2.24 | 1.82 | 0.99 | 0.41 | 23.04 |
| Highest Precipitation (in.) | 1.77 | 2.91 | 5.01 | 5.88 | 9.55 | 6.95 | 6.41 | 5.38 | 7.45 | 5.56 | 2.13 | 1.11 | 9.55 |
| Year Highest Occurred | 1988 | 1977 | 1987 | 1984 | 1982 | 1999 | 1992 | 1985 | 1996 | 1982 | 2000 | 1989 | 1982 |
| Lowest Precipitation (in.) | 0.03 | 0.00 | 0.11 | 0.95 | 0.61 | 0.72 | 0.82 | 0.49 | 0.27 | 0.05 | 0.02 | 0.00 | 0.00 |
| Year Lowest Occurred | 1989 | 1985 | 1994 | 1980 | 1992 | 1988 | 1980 | 1983 | 2000 | 1992 | 1976 | 1979 | 1985 |
| Heating Degree Days (F) | 1480. | 1167. | 981. | 586. | 252. | 62. | 15. | 31. | 161. | 511. | 991. | 1362. | 7599. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 21. | 134. | 278. | 229. | 61. | 0. | 0. | 0. | 724. |