| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.1 | 35.7 | 39.3 | 45.1 | 51.1 | 56.6 | 60.1 | 60.4 | 55.7 | 47.3 | 38.4 | 34.3 | 46.3 |
| Highest Mean Max. Temperature (F) | 45.2 | 42.8 | 46.1 | 51.0 | 58.3 | 62.4 | 64.5 | 65.5 | 60.5 | 51.1 | 44.3 | 40.8 | 65.5 |
| Year Highest Occurred | 1981 | 1998 | 1981 | 1993 | 1981 | 1997 | 1993 | 1997 | 1997 | 1980 | 1976 | 1989 | 1997 |
| Lowest Mean Max. Temperature (F) | 22.8 | 27.1 | 32.4 | 36.6 | 44.2 | 51.1 | 56.4 | 57.1 | 51.0 | 43.0 | 29.0 | 25.4 | 22.8 |
| Year Lowest Occurred | 1971 | 1979 | 1972 | 1972 | 1971 | 1975 | 1985 | 1973 | 1992 | 1992 | 1985 | 1977 | 1971 |
| Mean Temperature (F) | 25.8 | 28.4 | 31.5 | 37.2 | 43.6 | 49.7 | 53.6 | 53.3 | 48.2 | 41.1 | 32.4 | 28.6 | 39.5 |
| Highest Mean Temperature (F) | 40.2 | 36.9 | 38.3 | 41.2 | 49.6 | 53.1 | 56.6 | 57.0 | 53.6 | 45.6 | 40.4 | 36.7 | 57.0 |
| Year Highest Occurred | 1981 | 1998 | 1981 | 1993 | 1981 | 1990 | 1993 | 1997 | 1995 | 1980 | 1976 | 1989 | 1997 |
| Lowest Mean Temperature (F) | 15.2 | 15.5 | 23.6 | 28.8 | 37.2 | 45.7 | 51.0 | 50.1 | 43.8 | 37.1 | 20.2 | 18.5 | 15.2 |
| Year Lowest Occurred | 1996 | 1979 | 1971 | 1972 | 1971 | 1975 | 1973 | 1973 | 1992 | 1996 | 1985 | 1977 | 1996 |
| Mean Min. Temperature (F) | 19.4 | 21.0 | 23.6 | 29.2 | 36.1 | 42.7 | 47.1 | 46.2 | 40.6 | 34.8 | 26.3 | 22.9 | 32.5 |
| Highest Mean Min. Temperature (F) | 35.1 | 30.9 | 30.4 | 33.5 | 40.8 | 47.3 | 50.2 | 49.0 | 47.2 | 40.0 | 36.4 | 32.6 | 50.2 |
| Year Highest Occurred | 1981 | 1998 | 1981 | 1980 | 1981 | 1990 | 1992 | 1989 | 1995 | 1980 | 1976 | 1989 | 1992 |
| Lowest Mean Min. Temperature (F) | 6.5 | 3.9 | 14.4 | 20.9 | 30.1 | 38.4 | 43.6 | 42.5 | 35.5 | 29.7 | 11.4 | 11.5 | 3.9 |
| Year Lowest Occurred | 1996 | 1979 | 1975 | 1972 | 1971 | 1971 | 1976 | 1975 | 1996 | 1996 | 1985 | 1977 | 1979 |
| Mean Precipitation (in.) | 13.18 | 10.99 | 11.41 | 10.80 | 9.78 | 7.17 | 7.88 | 13.27 | 20.88 | 24.00 | 15.17 | 15.85 | 160.38 |
| Highest Precipitation (in.) | 31.81 | 24.12 | 37.28 | 19.12 | 18.15 | 18.34 | 17.03 | 27.74 | 48.33 | 48.81 | 42.73 | 35.21 | 48.81 |
| Year Highest Occurred | 1985 | 1997 | 1992 | 1977 | 1976 | 1987 | 1990 | 1991 | 1987 | 1987 | 1976 | 1989 | 1987 |
| Lowest Precipitation (in.) | 2.38 | 0.21 | 2.58 | 1.92 | 3.18 | 2.40 | 1.86 | 2.42 | 2.44 | 13.34 | 3.23 | 3.79 | 0.21 |
| Year Lowest Occurred | 1996 | 1989 | 1974 | 1979 | 1996 | 1971 | 1987 | 1987 | 1986 | 1985 | 1985 | 1983 | 1989 |
| Heating Degree Days (F) | 1216. | 1027. | 1024. | 837. | 664. | 460. | 353. | 364. | 506. | 742. | 980. | 1129. | 9302. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |