| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 17.9 | 23.9 | 36.4 | 53.8 | 67.4 | 76.7 | 83.9 | 82.1 | 70.6 | 58.3 | 38.0 | 22.4 | 52.6 |
| Highest Mean Max. Temperature (F) | 31.9 | 35.9 | 48.2 | 63.8 | 75.6 | 88.5 | 89.7 | 89.4 | 79.6 | 69.5 | 47.4 | 35.5 | 57.1 |
| Year Highest Occurred | 1990 | 1983 | 1981 | 1987 | 1977 | 1988 | 1988 | 1983 | 1979 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 5.3 | 11.3 | 24.2 | 39.7 | 61.3 | 69.2 | 76.6 | 74.7 | 57.1 | 48.8 | 25.0 | 6.0 | 49.3 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1975 | 1974 | 1969 | 1962 | 1966 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 6.9 | 12.7 | 25.5 | 41.6 | 54.4 | 64.2 | 70.3 | 67.8 | 56.6 | 44.6 | 26.8 | 12.0 | 40.3 |
| Highest Mean Temperature (F) | 22.3 | 27.6 | 34.6 | 49.1 | 62.1 | 74.0 | 74.6 | 74.1 | 63.4 | 54.1 | 34.6 | 23.2 | 45.4 |
| Year Highest Occurred | 1990 | 1987 | 1986 | 1987 | 1977 | 1988 | 1989 | 1983 | 1978 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -5.0 | -0.4 | 13.6 | 34.0 | 49.2 | 57.1 | 64.7 | 62.6 | 46.0 | 37.5 | 15.5 | -2.4 | 37.6 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1975 | 1968 | 1969 | 1962 | 1977 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -4.1 | 1.5 | 14.5 | 29.3 | 41.4 | 51.6 | 56.6 | 53.4 | 42.5 | 30.9 | 15.7 | 1.5 | 27.9 |
| Highest Mean Min. Temperature (F) | 12.6 | 19.4 | 24.9 | 34.4 | 48.6 | 59.4 | 60.7 | 58.7 | 48.9 | 38.6 | 22.7 | 15.5 | 33.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1989 | 1983 | 1978 | 1963 | 1987 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -15.9 | -12.0 | 0.4 | 24.1 | 36.5 | 44.9 | 51.1 | 48.7 | 34.9 | 24.6 | 5.9 | -10.8 | 25.1 |
| Year Lowest Occurred | 1982 | 1979 | 1970 | 1961 | 1983 | 1969 | 1967 | 1977 | 1965 | 1976 | 1985 | 1983 | 1970 |
| Mean Precipitation (in.) | 0.33 | 0.34 | 0.88 | 1.69 | 2.51 | 3.45 | 2.39 | 2.19 | 1.63 | 1.12 | 0.46 | 0.34 | 17.33 |
| Highest Precipitation (in.) | 1.01 | 1.60 | 2.46 | 5.57 | 5.09 | 7.97 | 6.94 | 6.36 | 4.47 | 4.66 | 2.41 | 1.02 | 22.58 |
| Year Highest Occurred | 1969 | 1987 | 1973 | 1986 | 1965 | 1964 | 1966 | 1963 | 1961 | 1982 | 1977 | 1969 | 1969 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.03 | 0.00 | 0.37 | 0.49 | 0.38 | 0.35 | 0.17 | 0.00 | 0.00 | 0.01 | 11.22 |
| Year Lowest Occurred | 1974 | 1985 | 1971 | 1988 | 1976 | 1974 | 1988 | 1982 | 1976 | 1964 | 1980 | 1986 | 1988 |
| Heating Degree Days (F) | 1801. | 1464. | 1225. | 702. | 340. | 109. | 28. | 62. | 273. | 632. | 1146. | 1643. | 9425. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 12. | 85. | 193. | 149. | 21. | 0. | 0. | 0. | 460. |