| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 22.1 | 28.4 | 39.8 | 55.7 | 68.8 | 77.9 | 82.5 | 80.5 | 71.9 | 59.3 | 39.9 | 26.5 | 54.4 |
| Highest Mean Max. Temperature (F) | 36.8 | 43.4 | 51.1 | 65.6 | 78.1 | 87.3 | 88.8 | 88.8 | 79.3 | 65.3 | 55.1 | 35.9 | 88.8 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1974 | 1983 | 1998 | 1989 | 1999 | 1986 | 1974 |
| Lowest Mean Max. Temperature (F) | 9.3 | 15.8 | 30.4 | 45.2 | 61.2 | 71.1 | 71.2 | 72.8 | 65.3 | 55.3 | 29.0 | 9.3 | 9.3 |
| Year Lowest Occurred | 1979 | 1979 | 1984 | 1975 | 1996 | 1993 | 1992 | 1992 | 1993 | 1995 | 1996 | 1983 | 1979 |
| Mean Temperature (F) | 11.5 | 17.9 | 30.1 | 44.3 | 57.2 | 66.9 | 71.5 | 69.1 | 59.1 | 46.6 | 30.2 | 17.0 | 43.5 |
| Highest Mean Temperature (F) | 26.0 | 31.6 | 37.9 | 51.1 | 65.4 | 74.4 | 76.0 | 76.0 | 65.3 | 51.6 | 40.6 | 25.1 | 76.0 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1973 | 1999 | 1979 | 1974 |
| Lowest Mean Temperature (F) | -1.1 | 3.4 | 20.3 | 37.6 | 51.2 | 61.8 | 62.8 | 62.7 | 54.3 | 41.4 | 19.9 | 0.2 | -1.1 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 0.9 | 7.4 | 20.3 | 32.8 | 45.5 | 55.8 | 60.4 | 57.6 | 46.3 | 33.9 | 20.5 | 7.4 | 32.4 |
| Highest Mean Min. Temperature (F) | 15.2 | 22.6 | 30.1 | 38.5 | 52.7 | 62.6 | 64.4 | 63.1 | 51.7 | 38.8 | 27.2 | 17.6 | 64.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1983 | 1983 | 1978 | 1973 | 1983 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -11.5 | -9.0 | 8.9 | 28.5 | 40.1 | 50.0 | 54.4 | 52.5 | 39.2 | 26.8 | 10.7 | -8.9 | -11.5 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1996 | 1979 | 1982 | 1992 | 1992 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.41 | 0.39 | 1.34 | 2.22 | 3.00 | 3.84 | 3.37 | 3.06 | 2.55 | 2.05 | 1.08 | 0.40 | 23.71 |
| Highest Precipitation (in.) | 1.62 | 1.42 | 3.93 | 5.55 | 8.80 | 10.05 | 9.79 | 6.33 | 9.52 | 6.08 | 3.33 | 1.32 | 10.05 |
| Year Highest Occurred | 1979 | 1992 | 1995 | 1986 | 1972 | 1984 | 1995 | 1980 | 1986 | 1984 | 1983 | 1982 | 1984 |
| Lowest Precipitation (in.) | 0.00 | 0.02 | 0.22 | 0.17 | 0.53 | 0.89 | 0.69 | 0.65 | 0.20 | 0.02 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1990 | 1983 | 1994 | 1996 | 1992 | 1978 | 1988 | 1976 | 1990 | 1988 | 1984 | 1991 | 1990 |
| Heating Degree Days (F) | 1659. | 1319. | 1084. | 625. | 278. | 66. | 23. | 42. | 205. | 572. | 1043. | 1489. | 8405. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 34. | 120. | 222. | 168. | 29. | 0. | 0. | 0. | 574. |