| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 25.0 | 31.1 | 41.2 | 55.3 | 66.4 | 76.1 | 84.1 | 83.0 | 70.8 | 59.3 | 41.3 | 28.6 | 55.2 |
| Highest Mean Max. Temperature (F) | 37.9 | 43.2 | 51.6 | 65.3 | 75.8 | 91.6 | 90.7 | 90.6 | 79.4 | 69.3 | 50.2 | 41.9 | 60.0 |
| Year Highest Occurred | 1981 | 1984 | 1986 | 1987 | 1988 | 1988 | 1988 | 1983 | 1990 | 1963 | 1987 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 9.1 | 16.8 | 23.2 | 45.0 | 59.9 | 69.3 | 76.5 | 76.0 | 57.7 | 50.1 | 23.2 | 9.5 | 51.0 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1974 | 1968 | 1972 | 1980 | 1965 | 1969 | 1985 | 1983 | 1978 |
| Mean Temperature (F) | 15.0 | 20.9 | 30.4 | 42.6 | 53.5 | 63.2 | 70.0 | 68.5 | 57.3 | 46.5 | 30.8 | 18.6 | 43.1 |
| Highest Mean Temperature (F) | 28.6 | 32.7 | 40.4 | 50.2 | 60.1 | 75.9 | 74.0 | 75.6 | 64.1 | 55.1 | 37.9 | 29.4 | 47.3 |
| Year Highest Occurred | 1981 | 1984 | 1986 | 1987 | 1977 | 1988 | 1966 | 1983 | 1990 | 1963 | 1987 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 0.3 | 7.1 | 14.7 | 36.0 | 48.7 | 58.5 | 63.7 | 62.8 | 47.1 | 38.6 | 14.7 | 1.5 | 39.9 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1974 | 1969 | 1972 | 1977 | 1965 | 1969 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 4.9 | 10.6 | 19.5 | 29.9 | 40.7 | 50.3 | 55.7 | 53.9 | 43.7 | 33.6 | 20.3 | 8.6 | 31.0 |
| Highest Mean Min. Temperature (F) | 19.3 | 22.9 | 29.1 | 35.1 | 47.1 | 60.2 | 61.0 | 60.5 | 50.8 | 40.8 | 28.0 | 18.4 | 35.1 |
| Year Highest Occurred | 1981 | 1987 | 1986 | 1987 | 1987 | 1988 | 1966 | 1983 | 1963 | 1963 | 1962 | 1986 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.0 | -3.4 | 6.2 | 25.0 | 36.4 | 44.1 | 49.6 | 48.4 | 36.5 | 27.0 | 6.2 | -6.5 | 28.2 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1961 | 1983 | 1985 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Precipitation (in.) | 0.50 | 0.39 | 0.68 | 1.46 | 2.32 | 2.85 | 1.83 | 1.62 | 1.67 | 0.97 | 0.55 | 0.52 | 15.36 |
| Highest Precipitation (in.) | 0.98 | 1.09 | 1.85 | 4.21 | 5.77 | 5.84 | 6.15 | 4.61 | 4.38 | 4.56 | 1.57 | 1.37 | 22.42 |
| Year Highest Occurred | 1971 | 1979 | 1982 | 1963 | 1978 | 1973 | 1962 | 1964 | 1967 | 1982 | 1978 | 1977 | 1982 |
| Lowest Precipitation (in.) | 0.04 | 0.02 | 0.10 | 0.06 | 0.32 | 0.37 | 0.43 | 0.00 | 0.12 | 0.00 | 0.05 | 0.00 | 7.32 |
| Year Lowest Occurred | 1973 | 1970 | 1986 | 1988 | 1984 | 1988 | 1968 | 1967 | 1969 | 1965 | 1987 | 1970 | 1988 |
| Heating Degree Days (F) | 1550. | 1235. | 1073. | 672. | 364. | 137. | 27. | 64. | 271. | 574. | 1026. | 1438. | 8431. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 8. | 83. | 182. | 172. | 40. | 0. | 0. | 0. | 485. |