| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 18.6 | 24.4 | 37.5 | 54.8 | 68.2 | 77.8 | 84.8 | 82.5 | 71.3 | 58.7 | 38.5 | 23.2 | 53.4 |
| Highest Mean Max. Temperature (F) | 33.8 | 40.7 | 48.8 | 67.9 | 76.5 | 87.8 | 90.9 | 88.9 | 78.0 | 68.1 | 46.4 | 35.4 | 59.0 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1976 | 1983 | 1979 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 6.2 | 9.1 | 26.3 | 41.6 | 61.3 | 71.4 | 79.2 | 76.5 | 58.8 | 51.4 | 23.9 | 8.1 | 49.7 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1975 | 1979 | 1969 | 1962 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 7.2 | 13.3 | 27.1 | 43.3 | 56.2 | 66.0 | 72.0 | 69.3 | 58.3 | 45.7 | 28.1 | 12.8 | 41.6 |
| Highest Mean Temperature (F) | 23.4 | 29.1 | 34.9 | 52.9 | 64.4 | 74.6 | 76.1 | 75.5 | 65.1 | 54.5 | 36.5 | 23.1 | 47.1 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -3.5 | -0.9 | 14.8 | 34.1 | 50.9 | 59.7 | 67.2 | 64.4 | 49.3 | 40.9 | 13.7 | -1.1 | 38.6 |
| Year Lowest Occurred | 1978 | 1979 | 1969 | 1975 | 1979 | 1969 | 1962 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -4.2 | 2.2 | 16.7 | 31.7 | 44.2 | 54.1 | 59.2 | 56.1 | 45.2 | 32.5 | 17.8 | 2.4 | 29.8 |
| Highest Mean Min. Temperature (F) | 13.0 | 19.0 | 25.7 | 37.8 | 52.2 | 61.3 | 63.5 | 62.0 | 52.4 | 40.9 | 26.6 | 15.0 | 35.2 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -13.9 | -10.9 | 3.2 | 25.6 | 38.3 | 47.9 | 54.5 | 51.1 | 38.7 | 25.3 | 3.4 | -10.2 | 27.3 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1966 | 1966 | 1969 | 1971 | 1977 | 1984 | 1976 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 0.51 | 0.49 | 1.39 | 2.22 | 2.57 | 3.32 | 2.74 | 2.16 | 1.91 | 1.28 | 0.62 | 0.48 | 19.69 |
| Highest Precipitation (in.) | 1.66 | 2.60 | 4.40 | 9.60 | 5.99 | 7.04 | 5.69 | 4.71 | 5.09 | 4.55 | 2.39 | 2.04 | 29.50 |
| Year Highest Occurred | 1982 | 1969 | 1966 | 1986 | 1972 | 1978 | 1981 | 1980 | 1988 | 1982 | 1970 | 1968 | 1986 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.07 | 0.10 | 0.45 | 0.17 | 0.25 | 0.25 | 0.00 | 0.10 | 0.00 | 0.00 | 9.80 |
| Year Lowest Occurred | 1961 | 1968 | 1971 | 1988 | 1976 | 1974 | 1976 | 1970 | 1978 | 1964 | 1980 | 1986 | 1976 |
| Heating Degree Days (F) | 1792. | 1448. | 1175. | 651. | 294. | 72. | 13. | 35. | 227. | 598. | 1107. | 1618. | 9030. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 21. | 102. | 230. | 168. | 26. | 0. | 0. | 0. | 547. |