| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 26.2 | 32.0 | 37.5 | 45.4 | 55.8 | 67.0 | 71.8 | 69.3 | 62.7 | 53.4 | 38.8 | 27.5 | 49.0 |
| Highest Mean Max. Temperature (F) | 32.5 | 37.3 | 42.9 | 52.2 | 62.3 | 72.4 | 75.5 | 72.4 | 68.6 | 59.9 | 44.5 | 39.3 | 51.6 |
| Year Highest Occurred | 1986 | 1977 | 1967 | 1981 | 1974 | 1980 | 1980 | 1969 | 1979 | 1963 | 1981 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 15.9 | 26.7 | 31.8 | 37.9 | 48.8 | 61.8 | 67.6 | 65.2 | 57.0 | 42.8 | 31.6 | 21.7 | 45.1 |
| Year Lowest Occurred | 1985 | 1985 | 1964 | 1984 | 1983 | 1969 | 1986 | 1968 | 1965 | 1969 | 1972 | 1966 | 1984 |
| Mean Temperature (F) | 6.7 | 10.6 | 17.9 | 29.0 | 40.4 | 50.0 | 55.9 | 54.1 | 47.0 | 37.8 | 24.2 | 10.3 | 32.0 |
| Highest Mean Temperature (F) | 14.8 | 17.4 | 25.7 | 35.3 | 45.3 | 54.7 | 58.5 | 58.2 | 51.5 | 43.5 | 30.7 | 19.5 | 34.8 |
| Year Highest Occurred | 1969 | 1962 | 1989 | 1977 | 1974 | 1981 | 1980 | 1969 | 1963 | 1963 | 1965 | 1980 | 1963 |
| Lowest Mean Temperature (F) | -5.3 | 3.2 | 7.4 | 19.5 | 32.7 | 44.5 | 48.9 | 49.2 | 39.2 | 30.7 | 15.5 | 0.6 | 25.9 |
| Year Lowest Occurred | 1984 | 1987 | 1987 | 1984 | 1983 | 1983 | 1986 | 1986 | 1985 | 1986 | 1984 | 1986 | 1984 |
| Mean Min. Temperature (F) | -12.9 | -10.9 | -1.7 | 12.5 | 25.0 | 33.0 | 40.0 | 38.7 | 31.3 | 22.2 | 9.6 | -6.9 | 15.0 |
| Highest Mean Min. Temperature (F) | -0.5 | 2.4 | 10.6 | 22.0 | 29.6 | 38.5 | 43.2 | 43.9 | 35.8 | 29.2 | 19.2 | -0.4 | 18.2 |
| Year Highest Occurred | 1969 | 1962 | 1990 | 1990 | 1989 | 1988 | 1981 | 1969 | 1969 | 1972 | 1965 | 1980 | 1990 |
| Lowest Mean Min. Temperature (F) | -29.4 | -24.9 | -21.5 | 1.1 | 16.5 | 24.8 | 30.2 | 28.9 | 20.3 | 12.0 | -3.0 | -24.5 | 6.7 |
| Year Lowest Occurred | 1984 | 1987 | 1987 | 1984 | 1983 | 1985 | 1986 | 1985 | 1985 | 1985 | 1984 | 1986 | 1984 |
| Mean Precipitation (in.) | 1.28 | 1.18 | 1.39 | 1.16 | 1.31 | 1.10 | 1.79 | 1.81 | 1.59 | 1.29 | 1.30 | 1.57 | 16.77 |
| Highest Precipitation (in.) | 3.65 | 4.20 | 3.20 | 2.75 | 3.05 | 3.60 | 3.35 | 4.35 | 4.20 | 3.85 | 3.30 | 4.95 | 22.70 |
| Year Highest Occurred | 1980 | 1986 | 1985 | 1990 | 1981 | 1969 | 1981 | 1963 | 1961 | 1969 | 1983 | 1966 | 1983 |
| Lowest Precipitation (in.) | 0.15 | 0.30 | 0.35 | 0.25 | 0.05 | 0.00 | 0.35 | 0.55 | 0.15 | 0.05 | 0.20 | 0.05 | 11.48 |
| Year Lowest Occurred | 1986 | 1970 | 1962 | 1967 | 1974 | 1980 | 1972 | 1985 | 1979 | 1964 | 1976 | 1976 | 1974 |
| Heating Degree Days (F) | 1807. | 1523. | 1460. | 1080. | 763. | 450. | 282. | 338. | 540. | 843. | 1224. | 1696. | 12006. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |