| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 38.3 | 40.3 | 43.0 | 50.8 | 60.7 | 70.7 | 75.3 | 73.1 | 66.5 | 58.5 | 46.0 | 39.1 | 55.2 |
| Highest Mean Max. Temperature (F) | 47.6 | 45.0 | 51.4 | 57.6 | 67.1 | 76.0 | 78.7 | 76.8 | 74.4 | 65.3 | 51.4 | 49.9 | 57.3 |
| Year Highest Occurred | 1986 | 1970 | 1972 | 1989 | 1974 | 1974 | 1978 | 1969 | 1979 | 1964 | 1963 | 1980 | 1963 |
| Lowest Mean Max. Temperature (F) | 27.6 | 35.0 | 37.3 | 44.6 | 56.2 | 65.9 | 69.9 | 66.2 | 59.4 | 47.8 | 39.4 | 33.4 | 52.2 |
| Year Lowest Occurred | 1979 | 1964 | 1980 | 1975 | 1980 | 1967 | 1990 | 1989 | 1986 | 1984 | 1972 | 1990 | 1990 |
| Mean Temperature (F) | 21.6 | 23.7 | 27.9 | 35.8 | 44.2 | 52.1 | 57.6 | 56.1 | 49.4 | 41.6 | 30.7 | 23.1 | 38.7 |
| Highest Mean Temperature (F) | 30.0 | 27.9 | 35.7 | 43.5 | 47.8 | 55.9 | 59.6 | 59.5 | 54.1 | 46.5 | 35.1 | 34.1 | 41.0 |
| Year Highest Occurred | 1981 | 1981 | 1989 | 1989 | 1969 | 1981 | 1967 | 1969 | 1963 | 1963 | 1967 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 14.5 | 17.3 | 21.8 | 29.9 | 40.7 | 46.7 | 54.6 | 51.5 | 44.5 | 32.2 | 24.7 | 18.2 | 36.0 |
| Year Lowest Occurred | 1979 | 1966 | 1969 | 1973 | 1975 | 1984 | 1984 | 1989 | 1984 | 1984 | 1972 | 1972 | 1984 |
| Mean Min. Temperature (F) | 4.9 | 7.0 | 12.7 | 20.8 | 27.7 | 33.4 | 39.9 | 39.0 | 32.2 | 24.7 | 15.2 | 7.0 | 22.0 |
| Highest Mean Min. Temperature (F) | 15.6 | 15.2 | 22.6 | 29.4 | 31.6 | 39.8 | 42.7 | 43.1 | 36.1 | 30.6 | 19.6 | 18.3 | 25.3 |
| Year Highest Occurred | 1981 | 1989 | 1989 | 1989 | 1987 | 1988 | 1988 | 1988 | 1963 | 1972 | 1965 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -0.7 | -1.1 | 5.7 | 14.5 | 24.2 | 26.3 | 34.0 | 32.0 | 23.1 | 16.6 | 8.7 | 0.7 | 17.4 |
| Year Lowest Occurred | 1966 | 1974 | 1969 | 1973 | 1984 | 1984 | 1984 | 1984 | 1984 | 1984 | 1979 | 1972 | 1984 |
| Mean Precipitation (in.) | 2.26 | 2.20 | 2.72 | 1.89 | 1.79 | 1.62 | 3.29 | 3.36 | 2.74 | 2.36 | 2.36 | 2.54 | 29.13 |
| Highest Precipitation (in.) | 7.57 | 5.59 | 6.32 | 3.74 | 3.40 | 8.54 | 7.81 | 7.77 | 6.48 | 7.06 | 6.23 | 6.90 | 40.83 |
| Year Highest Occurred | 1980 | 1980 | 1978 | 1986 | 1980 | 1988 | 1981 | 1982 | 1986 | 1972 | 1986 | 1966 | 1988 |
| Lowest Precipitation (in.) | 0.46 | 0.25 | 0.63 | 0.39 | 0.10 | 0.00 | 1.39 | 1.52 | 0.19 | 0.00 | 0.10 | 0.13 | 19.94 |
| Year Lowest Occurred | 1986 | 1970 | 1972 | 1989 | 1970 | 1980 | 1979 | 1974 | 1979 | 1964 | 1989 | 1976 | 1989 |
| Heating Degree Days (F) | 1345. | 1156. | 1150. | 876. | 645. | 387. | 229. | 276. | 468. | 725. | 1029. | 1299. | 9585. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |