| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.9 | 35.4 | 39.3 | 45.6 | 55.7 | 66.8 | 72.0 | 70.4 | 63.6 | 53.3 | 39.5 | 32.8 | 50.5 |
| Highest Mean Max. Temperature (F) | 41.2 | 41.4 | 45.2 | 52.0 | 61.2 | 72.6 | 76.4 | 74.0 | 69.9 | 58.5 | 51.2 | 43.0 | 76.4 |
| Year Highest Occurred | 1981 | 1995 | 1999 | 1989 | 1996 | 1994 | 1980 | 2000 | 1998 | 1979 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 26.5 | 27.0 | 32.3 | 38.1 | 49.5 | 62.4 | 66.6 | 66.6 | 58.4 | 45.3 | 31.3 | 25.9 | 25.9 |
| Year Lowest Occurred | 1979 | 1975 | 1973 | 1973 | 1995 | 1992 | 1992 | 1976 | 1986 | 1984 | 1972 | 1978 | 1978 |
| Mean Temperature (F) | 16.9 | 18.9 | 25.1 | 32.1 | 42.1 | 51.4 | 56.9 | 55.5 | 48.8 | 39.0 | 26.7 | 19.0 | 36.0 |
| Highest Mean Temperature (F) | 23.1 | 25.3 | 31.8 | 38.5 | 47.0 | 56.6 | 60.6 | 59.7 | 54.7 | 43.3 | 35.1 | 28.3 | 60.6 |
| Year Highest Occurred | 2000 | 1995 | 1999 | 1981 | 1996 | 1994 | 1980 | 2000 | 1998 | 1988 | 1999 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 8.6 | 10.1 | 16.7 | 24.4 | 35.0 | 45.6 | 52.6 | 50.9 | 42.4 | 31.8 | 19.1 | 11.8 | 8.6 |
| Year Lowest Occurred | 1979 | 1975 | 1975 | 1973 | 1975 | 1976 | 1973 | 1974 | 1973 | 1984 | 1972 | 1978 | 1979 |
| Mean Min. Temperature (F) | 1.9 | 2.4 | 10.8 | 18.6 | 28.4 | 35.9 | 41.7 | 40.6 | 33.9 | 24.7 | 13.8 | 5.1 | 21.5 |
| Highest Mean Min. Temperature (F) | 10.6 | 11.6 | 18.4 | 25.5 | 33.4 | 41.7 | 45.8 | 45.4 | 39.7 | 28.8 | 22.9 | 13.5 | 45.8 |
| Year Highest Occurred | 2000 | 1986 | 1999 | 1981 | 1992 | 1981 | 1998 | 2000 | 1997 | 1998 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -9.3 | -6.8 | 0.5 | 10.6 | 18.9 | 26.7 | 37.1 | 34.6 | 26.4 | 15.8 | 6.6 | -2.4 | -9.3 |
| Year Lowest Occurred | 1979 | 1975 | 1975 | 1973 | 1975 | 1976 | 1971 | 1975 | 1973 | 1976 | 1975 | 1978 | 1979 |
| Mean Precipitation (in.) | 0.44 | 0.51 | 0.79 | 0.81 | 0.96 | 0.83 | 1.47 | 1.49 | 0.90 | 0.67 | 0.55 | 0.45 | 9.87 |
| Highest Precipitation (in.) | 1.65 | 1.91 | 2.21 | 2.46 | 2.99 | 3.20 | 3.13 | 3.27 | 2.46 | 1.91 | 1.79 | 1.74 | 3.27 |
| Year Highest Occurred | 1996 | 1996 | 1995 | 1990 | 1995 | 1988 | 1998 | 1984 | 1976 | 1984 | 1979 | 1977 | 1984 |
| Lowest Precipitation (in.) | 0.00 | 0.03 | 0.10 | 0.09 | 0.01 | 0.03 | 0.09 | 0.18 | 0.22 | 0.02 | 0.12 | 0.00 | 0.00 |
| Year Lowest Occurred | 1977 | 1973 | 1978 | 1979 | 1974 | 1980 | 1994 | 1985 | 1978 | 1976 | 1973 | 1976 | 1977 |
| Heating Degree Days (F) | 1492. | 1291. | 1239. | 987. | 712. | 411. | 256. | 298. | 489. | 806. | 1150. | 1428. | 10559. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 2. | 5. | 4. | 0. | 0. | 0. | 0. | 11. |