| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 33.1 | 37.3 | 43.2 | 50.0 | 60.3 | 70.8 | 75.3 | 72.8 | 65.8 | 55.6 | 40.4 | 33.1 | 53.1 |
| Highest Mean Max. Temperature (F) | 39.8 | 42.0 | 49.1 | 58.1 | 66.2 | 77.5 | 79.4 | 76.8 | 72.6 | 59.7 | 54.0 | 42.4 | 79.4 |
| Year Highest Occurred | 1986 | 1995 | 1999 | 1981 | 1996 | 1994 | 1978 | 2000 | 1998 | 1992 | 1999 | 1980 | 1978 |
| Lowest Mean Max. Temperature (F) | 25.6 | 32.7 | 38.8 | 42.3 | 54.7 | 65.0 | 71.4 | 70.6 | 62.2 | 46.7 | 33.0 | 28.0 | 25.6 |
| Year Lowest Occurred | 1979 | 1971 | 1988 | 1983 | 1995 | 1989 | 1973 | 1991 | 1985 | 1984 | 1972 | 1974 | 1979 |
| Mean Temperature (F) | 20.3 | 23.5 | 29.2 | 35.9 | 45.1 | 53.8 | 58.7 | 57.0 | 49.5 | 40.2 | 27.6 | 21.0 | 38.5 |
| Highest Mean Temperature (F) | 26.8 | 29.0 | 34.4 | 41.8 | 49.8 | 58.4 | 61.6 | 60.9 | 55.4 | 43.8 | 38.0 | 30.4 | 61.6 |
| Year Highest Occurred | 1986 | 1995 | 1999 | 1981 | 1996 | 1994 | 2000 | 2000 | 1998 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 12.4 | 18.0 | 24.8 | 28.7 | 40.8 | 50.1 | 55.6 | 54.3 | 45.9 | 34.8 | 20.4 | 15.3 | 12.4 |
| Year Lowest Occurred | 1979 | 1989 | 1988 | 1983 | 1983 | 1975 | 1973 | 1974 | 1971 | 1984 | 1979 | 1990 | 1979 |
| Mean Min. Temperature (F) | 7.5 | 9.6 | 15.1 | 21.7 | 29.8 | 36.7 | 42.0 | 41.1 | 33.1 | 24.8 | 14.8 | 8.8 | 23.8 |
| Highest Mean Min. Temperature (F) | 13.8 | 16.0 | 19.7 | 26.8 | 33.5 | 40.7 | 46.5 | 44.9 | 39.1 | 27.9 | 22.0 | 18.4 | 46.5 |
| Year Highest Occurred | 1986 | 1995 | 1999 | 1992 | 1992 | 1988 | 1999 | 2000 | 1997 | 1998 | 1999 | 1980 | 1999 |
| Lowest Mean Min. Temperature (F) | -0.8 | 3.2 | 9.5 | 15.1 | 26.5 | 32.4 | 39.7 | 36.9 | 28.9 | 20.4 | 7.6 | 1.9 | -0.8 |
| Year Lowest Occurred | 1979 | 1989 | 1977 | 1983 | 1983 | 1975 | 1973 | 1974 | 1971 | 1976 | 1979 | 1990 | 1979 |
| Mean Precipitation (in.) | 0.49 | 0.58 | 1.15 | 1.55 | 1.70 | 1.54 | 2.43 | 2.45 | 1.31 | 1.11 | 0.89 | 0.67 | 15.87 |
| Highest Precipitation (in.) | 2.10 | 1.70 | 2.41 | 4.02 | 4.67 | 3.32 | 6.09 | 4.82 | 2.46 | 2.87 | 2.18 | 1.69 | 6.09 |
| Year Highest Occurred | 1996 | 1995 | 1995 | 1995 | 1995 | 1997 | 1998 | 1984 | 1990 | 1974 | 1983 | 1978 | 1998 |
| Lowest Precipitation (in.) | 0.10 | 0.10 | 0.36 | 0.29 | 0.02 | 0.00 | 0.41 | 0.83 | 0.24 | 0.09 | 0.19 | 0.11 | 0.00 |
| Year Lowest Occurred | 1983 | 1973 | 1999 | 1972 | 1974 | 1980 | 1994 | 1985 | 1983 | 1988 | 1989 | 2000 | 1980 |
| Heating Degree Days (F) | 1385. | 1163. | 1112. | 875. | 618. | 338. | 201. | 250. | 466. | 770. | 1122. | 1365. | 9665. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 1. | 3. | 0. | 0. | 0. | 0. | 0. | 4. |