| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.4 | 28.0 | 40.2 | 56.4 | 70.5 | 78.5 | 83.5 | 80.7 | 70.5 | 59.1 | 39.7 | 24.2 | 54.3 |
| Highest Mean Max. Temperature (F) | 32.6 | 39.1 | 50.0 | 68.4 | 81.8 | 86.6 | 89.7 | 86.8 | 76.6 | 70.7 | 46.6 | 33.9 | 59.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1969 | 1976 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.8 | 19.0 | 30.2 | 47.3 | 63.4 | 71.4 | 76.5 | 75.2 | 60.7 | 54.0 | 30.3 | 11.9 | 51.6 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1967 | 1969 | 1962 | 1964 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 8.0 | 14.6 | 27.7 | 42.7 | 56.0 | 64.9 | 70.1 | 67.3 | 57.9 | 47.1 | 30.4 | 13.8 | 41.7 |
| Highest Mean Temperature (F) | 19.4 | 26.9 | 36.4 | 50.8 | 66.0 | 70.4 | 74.5 | 74.1 | 61.2 | 57.5 | 36.7 | 23.9 | 46.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -3.2 | 3.0 | 16.3 | 35.5 | 49.1 | 58.0 | 65.2 | 61.7 | 51.0 | 41.6 | 20.4 | 1.3 | 38.7 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1988 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -4.5 | 1.1 | 15.1 | 29.0 | 41.5 | 51.2 | 56.7 | 53.9 | 45.2 | 34.9 | 20.9 | 3.4 | 29.0 |
| Highest Mean Min. Temperature (F) | 6.1 | 16.3 | 24.6 | 34.1 | 50.2 | 56.0 | 62.2 | 61.6 | 50.0 | 44.2 | 26.9 | 15.9 | 33.2 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1985 | 1977 | 1987 | 1983 | 1983 | 1983 | 1963 | 1962 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -17.1 | -13.1 | 2.3 | 23.7 | 34.7 | 44.6 | 51.1 | 48.0 | 38.3 | 28.5 | 10.4 | -10.4 | 25.0 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1974 | 1988 | 1985 | 1976 | 1989 |
| Mean Precipitation (in.) | 0.95 | 0.60 | 1.64 | 2.38 | 3.15 | 4.07 | 3.76 | 3.38 | 3.22 | 2.39 | 1.51 | 0.90 | 27.95 |
| Highest Precipitation (in.) | 4.09 | 1.94 | 3.40 | 5.80 | 6.93 | 6.55 | 12.35 | 8.20 | 7.95 | 7.70 | 5.65 | 1.82 | 40.70 |
| Year Highest Occurred | 1975 | 1979 | 1966 | 1986 | 1982 | 1985 | 1972 | 1964 | 1965 | 1984 | 1988 | 1968 | 1972 |
| Lowest Precipitation (in.) | 0.19 | 0.03 | 0.21 | 0.06 | 0.58 | 0.90 | 0.86 | 0.35 | 0.31 | 0.14 | 0.09 | 0.15 | 14.90 |
| Year Lowest Occurred | 1981 | 1988 | 1961 | 1987 | 1976 | 1987 | 1967 | 1969 | 1974 | 1964 | 1967 | 1989 | 1976 |
| Heating Degree Days (F) | 1767. | 1411. | 1156. | 669. | 306. | 83. | 20. | 58. | 223. | 555. | 1038. | 1587. | 8873. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 27. | 80. | 178. | 129. | 10. | 0. | 0. | 0. | 424. |