| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 19.7 | 24.2 | 33.1 | 45.8 | 61.5 | 70.3 | 75.2 | 72.6 | 63.2 | 50.9 | 35.4 | 24.1 | 48.0 |
| Highest Mean Max. Temperature (F) | 29.4 | 35.7 | 43.5 | 54.5 | 70.9 | 76.8 | 81.8 | 77.9 | 69.1 | 57.8 | 45.3 | 32.3 | 81.8 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1997 | 1983 | 1983 | 1998 | 1973 | 1999 | 1994 | 1983 |
| Lowest Mean Max. Temperature (F) | 10.0 | 16.2 | 26.7 | 38.2 | 53.0 | 65.0 | 67.6 | 67.7 | 57.2 | 44.6 | 28.0 | 15.5 | 10.0 |
| Year Lowest Occurred | 1994 | 1979 | 1972 | 1995 | 1983 | 1982 | 1992 | 1977 | 1974 | 1988 | 1995 | 1989 | 1994 |
| Mean Temperature (F) | 11.5 | 14.8 | 23.7 | 36.4 | 50.3 | 59.3 | 64.4 | 62.3 | 53.5 | 42.5 | 28.9 | 17.2 | 38.7 |
| Highest Mean Temperature (F) | 21.3 | 28.4 | 32.9 | 43.8 | 58.3 | 65.6 | 69.5 | 67.4 | 58.3 | 50.1 | 37.2 | 26.8 | 69.5 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1995 | 1983 | 1995 | 1998 | 1971 | 1999 | 1994 | 1983 |
| Lowest Mean Temperature (F) | 1.8 | 5.4 | 16.7 | 29.7 | 43.4 | 53.3 | 57.7 | 57.5 | 47.3 | 37.2 | 21.7 | 7.0 | 1.8 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1972 | 1983 | 1982 | 1992 | 1977 | 1974 | 1976 | 1995 | 1976 | 1977 |
| Mean Min. Temperature (F) | 3.3 | 5.4 | 14.3 | 26.9 | 39.1 | 48.3 | 53.5 | 52.0 | 43.8 | 34.0 | 22.4 | 10.2 | 29.4 |
| Highest Mean Min. Temperature (F) | 13.2 | 21.0 | 24.7 | 33.1 | 45.7 | 54.6 | 58.3 | 58.5 | 48.8 | 43.1 | 29.0 | 21.3 | 58.5 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1995 | 1999 | 1995 | 1994 | 1971 | 1999 | 1994 | 1995 |
| Lowest Mean Min. Temperature (F) | -6.8 | -5.5 | 6.4 | 20.1 | 33.5 | 41.6 | 47.9 | 47.2 | 37.4 | 28.6 | 15.2 | -1.9 | -6.8 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1972 | 1971 | 1982 | 1992 | 1977 | 1974 | 1976 | 1976 | 1976 | 1977 |
| Mean Precipitation (in.) | 2.60 | 1.85 | 3.13 | 2.79 | 3.07 | 3.21 | 3.01 | 3.55 | 3.74 | 3.66 | 3.27 | 2.43 | 36.31 |
| Highest Precipitation (in.) | 6.61 | 3.68 | 6.08 | 6.56 | 7.91 | 6.61 | 5.52 | 8.59 | 6.94 | 7.59 | 8.25 | 5.03 | 8.59 |
| Year Highest Occurred | 1997 | 1984 | 1979 | 1985 | 1973 | 1981 | 1977 | 1988 | 1980 | 1979 | 1988 | 1977 | 1988 |
| Lowest Precipitation (in.) | 0.83 | 0.48 | 0.32 | 0.90 | 0.06 | 0.61 | 0.57 | 0.81 | 1.21 | 0.94 | 1.00 | 0.37 | 0.06 |
| Year Lowest Occurred | 1977 | 1994 | 1974 | 1998 | 1986 | 1992 | 1981 | 1991 | 1989 | 1975 | 1990 | 1994 | 1986 |
| Heating Degree Days (F) | 1659. | 1405. | 1280. | 859. | 468. | 200. | 92. | 134. | 348. | 700. | 1083. | 1484. | 9712. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 12. | 30. | 72. | 50. | 3. | 0. | 0. | 0. | 167. |