| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 18.6 | 24.3 | 36.2 | 52.5 | 66.3 | 74.9 | 80.1 | 77.3 | 68.0 | 56.0 | 39.4 | 23.9 | 51.5 |
| Highest Mean Max. Temperature (F) | 31.7 | 34.6 | 45.7 | 61.0 | 77.1 | 82.3 | 86.0 | 82.5 | 72.7 | 69.1 | 46.5 | 30.8 | 55.5 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1988 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.5 | 17.8 | 28.2 | 44.2 | 58.6 | 65.9 | 75.5 | 73.6 | 62.4 | 49.5 | 32.9 | 11.5 | 48.7 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1973 | 1969 | 1962 | 1964 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 8.4 | 13.4 | 26.5 | 42.2 | 54.3 | 63.1 | 68.1 | 65.3 | 56.3 | 45.1 | 30.8 | 14.7 | 40.7 |
| Highest Mean Temperature (F) | 21.5 | 25.8 | 37.4 | 48.1 | 62.3 | 67.9 | 72.6 | 70.8 | 60.1 | 54.8 | 36.5 | 23.3 | 45.2 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1975 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -5.0 | 4.9 | 18.9 | 35.1 | 47.3 | 56.5 | 62.8 | 60.4 | 51.4 | 39.2 | 22.5 | 2.6 | 38.6 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1966 | 1969 | 1962 | 1966 | 1965 | 1988 | 1976 | 1983 | 1989 |
| Mean Min. Temperature (F) | -1.9 | 2.4 | 16.8 | 31.9 | 42.4 | 51.3 | 56.0 | 53.4 | 44.7 | 34.3 | 22.2 | 5.4 | 29.9 |
| Highest Mean Min. Temperature (F) | 11.3 | 18.7 | 30.1 | 37.7 | 49.2 | 57.1 | 60.6 | 59.6 | 48.9 | 43.0 | 27.1 | 17.0 | 34.9 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1982 | 1971 | 1983 | 1983 | 1990 | 1971 | 1987 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -17.4 | -8.1 | 8.4 | 26.0 | 33.3 | 46.4 | 50.0 | 46.4 | 37.9 | 26.5 | 11.0 | -8.1 | 25.9 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1966 | 1982 | 1962 | 1966 | 1976 | 1976 | 1976 | 1976 | 1976 |
| Mean Precipitation (in.) | 0.90 | 0.82 | 1.82 | 2.45 | 3.68 | 4.40 | 4.23 | 4.43 | 4.37 | 2.51 | 1.87 | 1.33 | 32.81 |
| Highest Precipitation (in.) | 2.99 | 2.18 | 3.67 | 4.51 | 8.63 | 12.13 | 8.58 | 8.56 | 10.14 | 7.47 | 5.59 | 2.94 | 43.87 |
| Year Highest Occurred | 1969 | 1981 | 1976 | 1967 | 1973 | 1980 | 1987 | 1962 | 1986 | 1979 | 1975 | 1982 | 1980 |
| Lowest Precipitation (in.) | 0.04 | 0.06 | 0.10 | 0.79 | 0.74 | 1.17 | 0.89 | 0.91 | 0.81 | 0.30 | 0.12 | 0.26 | 21.01 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1971 | 1986 | 1983 | 1974 | 1970 | 1979 | 1976 | 1976 | 1989 | 1974 |
| Heating Degree Days (F) | 1755. | 1445. | 1194. | 684. | 354. | 111. | 33. | 82. | 265. | 617. | 1026. | 1559. | 9125. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 23. | 54. | 129. | 91. | 0. | 0. | 0. | 0. | 297. |