| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 31.5 | 35.0 | 38.2 | 43.5 | 50.0 | 55.6 | 59.3 | 59.8 | 55.3 | 47.1 | 37.3 | 33.1 | 45.5 |
| Highest Mean Max. Temperature (F) | 45.2 | 42.8 | 46.1 | 50.9 | 58.3 | 59.7 | 63.9 | 63.5 | 58.7 | 51.1 | 44.3 | 40.8 | 49.7 |
| Year Highest Occurred | 1981 | 1977 | 1981 | 1990 | 1981 | 1983 | 1972 | 1990 | 1986 | 1980 | 1976 | 1989 | 1981 |
| Lowest Mean Max. Temperature (F) | 18.1 | 27.1 | 32.4 | 36.6 | 44.2 | 50.4 | 55.9 | 55.9 | 52.3 | 41.5 | 29.0 | 25.2 | 42.1 |
| Year Lowest Occurred | 1969 | 1979 | 1972 | 1972 | 1971 | 1965 | 1965 | 1966 | 1968 | 1966 | 1985 | 1964 | 1966 |
| Mean Temperature (F) | 25.1 | 28.0 | 31.0 | 36.3 | 43.3 | 49.4 | 53.6 | 53.2 | 48.2 | 40.9 | 31.3 | 27.1 | 39.0 |
| Highest Mean Temperature (F) | 40.8 | 37.9 | 39.5 | 41.5 | 50.9 | 53.1 | 56.3 | 55.9 | 52.1 | 45.9 | 40.4 | 36.7 | 43.6 |
| Year Highest Occurred | 1981 | 1977 | 1981 | 1980 | 1981 | 1990 | 1981 | 1990 | 1963 | 1980 | 1976 | 1989 | 1981 |
| Lowest Mean Temperature (F) | 6.8 | 16.5 | 22.3 | 28.8 | 37.6 | 44.3 | 50.3 | 48.5 | 44.5 | 35.7 | 20.6 | 15.8 | 34.6 |
| Year Lowest Occurred | 1969 | 1979 | 1967 | 1972 | 1971 | 1965 | 1965 | 1969 | 1971 | 1966 | 1985 | 1964 | 1966 |
| Mean Min. Temperature (F) | 18.6 | 21.1 | 23.7 | 29.1 | 36.5 | 43.3 | 47.8 | 46.5 | 41.0 | 34.7 | 25.2 | 21.1 | 32.4 |
| Highest Mean Min. Temperature (F) | 36.3 | 32.9 | 32.8 | 36.0 | 43.4 | 47.3 | 51.9 | 50.7 | 46.7 | 40.6 | 36.5 | 32.6 | 37.5 |
| Year Highest Occurred | 1981 | 1977 | 1981 | 1980 | 1981 | 1990 | 1981 | 1981 | 1963 | 1980 | 1976 | 1989 | 1981 |
| Lowest Mean Min. Temperature (F) | -4.6 | 5.9 | 10.5 | 20.9 | 31.0 | 38.1 | 44.6 | 39.9 | 35.9 | 28.0 | 12.2 | 6.4 | 27.2 |
| Year Lowest Occurred | 1969 | 1979 | 1967 | 1972 | 1971 | 1965 | 1965 | 1969 | 1971 | 1968 | 1985 | 1964 | 1966 |
| Mean Precipitation (in.) | 12.18 | 10.67 | 10.72 | 9.92 | 9.66 | 7.30 | 8.18 | 11.54 | 18.65 | 22.97 | 14.52 | 14.94 | 151.25 |
| Highest Precipitation (in.) | 31.81 | 32.13 | 27.35 | 19.12 | 18.95 | 18.34 | 17.03 | 26.93 | 48.33 | 48.81 | 42.73 | 35.21 | 250.24 |
| Year Highest Occurred | 1985 | 1964 | 1979 | 1977 | 1965 | 1987 | 1990 | 1981 | 1987 | 1987 | 1976 | 1989 | 1987 |
| Lowest Precipitation (in.) | 2.40 | 0.21 | 2.58 | 1.92 | 3.81 | 1.84 | 1.86 | 2.42 | 2.44 | 12.55 | 3.23 | 3.79 | 114.35 |
| Year Lowest Occurred | 1966 | 1989 | 1974 | 1979 | 1981 | 1966 | 1987 | 1987 | 1986 | 1968 | 1985 | 1983 | 1973 |
| Heating Degree Days (F) | 1237. | 1036. | 1054. | 861. | 673. | 468. | 353. | 366. | 504. | 747. | 1011. | 1175. | 9485. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |