| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 14.4 | 21.2 | 34.9 | 53.2 | 68.4 | 76.0 | 81.0 | 79.1 | 68.3 | 56.3 | 35.2 | 19.4 | 50.6 |
| Highest Mean Max. Temperature (F) | 27.3 | 32.2 | 45.5 | 65.4 | 79.0 | 84.7 | 85.7 | 85.3 | 74.8 | 71.4 | 44.2 | 29.4 | 53.6 |
| Year Highest Occurred | 1990 | 1984 | 1981 | 1987 | 1977 | 1988 | 1983 | 1961 | 1967 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 3.8 | 10.5 | 26.1 | 43.7 | 57.1 | 65.6 | 76.7 | 72.4 | 58.2 | 48.2 | 24.4 | 8.2 | 46.9 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1979 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 3.1 | 9.2 | 23.3 | 41.1 | 55.1 | 63.7 | 68.4 | 65.7 | 55.5 | 44.4 | 26.1 | 9.6 | 38.8 |
| Highest Mean Temperature (F) | 16.9 | 23.9 | 35.1 | 50.1 | 64.7 | 70.5 | 73.0 | 71.2 | 59.7 | 56.3 | 33.0 | 19.9 | 43.2 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1963 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Temperature (F) | -10.9 | -1.7 | 12.9 | 33.6 | 47.4 | 54.9 | 63.9 | 58.2 | 48.1 | 38.6 | 15.6 | -1.4 | 35.5 |
| Year Lowest Occurred | 1982 | 1967 | 1965 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -8.3 | -2.8 | 11.7 | 29.0 | 41.8 | 51.4 | 55.9 | 52.3 | 42.6 | 32.5 | 16.9 | -0.3 | 26.9 |
| Highest Mean Min. Temperature (F) | 6.4 | 15.6 | 25.6 | 34.7 | 50.3 | 56.2 | 60.6 | 57.3 | 47.0 | 41.1 | 23.2 | 12.3 | 32.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1975 | 1983 | 1978 | 1963 | 1962 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -25.9 | -17.2 | -0.4 | 23.0 | 35.8 | 44.1 | 51.1 | 43.9 | 37.9 | 25.3 | 6.7 | -11.0 | 23.6 |
| Year Lowest Occurred | 1982 | 1967 | 1965 | 1979 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1967 |
| Mean Precipitation (in.) | 0.58 | 0.39 | 0.80 | 1.54 | 2.58 | 3.75 | 3.27 | 3.03 | 2.65 | 1.53 | 0.84 | 0.59 | 21.55 |
| Highest Precipitation (in.) | 2.19 | 1.16 | 2.42 | 4.30 | 6.11 | 8.35 | 6.37 | 9.41 | 6.39 | 5.66 | 3.36 | 1.16 | 35.76 |
| Year Highest Occurred | 1969 | 1979 | 1966 | 1967 | 1962 | 1968 | 1982 | 1964 | 1973 | 1971 | 1977 | 1967 | 1964 |
| Lowest Precipitation (in.) | 0.01 | 0.03 | 0.06 | 0.00 | 0.21 | 0.69 | 0.69 | 1.00 | 0.20 | 0.01 | 0.04 | 0.12 | 15.81 |
| Year Lowest Occurred | 1963 | 1965 | 1986 | 1988 | 1980 | 1961 | 1967 | 1965 | 1976 | 1976 | 1976 | 1979 | 1988 |
| Heating Degree Days (F) | 1919. | 1562. | 1293. | 717. | 337. | 118. | 34. | 87. | 290. | 639. | 1167. | 1717. | 9880. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 30. | 79. | 139. | 109. | 0. | 0. | 0. | 0. | 357. |