| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 13.5 | 20.7 | 34.1 | 52.3 | 66.7 | 75.6 | 80.8 | 78.9 | 67.5 | 55.4 | 35.4 | 19.3 | 50.0 |
| Highest Mean Max. Temperature (F) | 28.0 | 33.0 | 43.0 | 65.7 | 77.7 | 82.5 | 87.4 | 86.6 | 74.1 | 70.4 | 43.6 | 31.7 | 54.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1961 | 1989 | 1961 | 1979 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 2.2 | 8.0 | 22.6 | 41.8 | 58.9 | 67.9 | 75.4 | 72.3 | 57.1 | 46.5 | 24.4 | 5.9 | 46.9 |
| Year Lowest Occurred | 1966 | 1989 | 1965 | 1975 | 1979 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 2.3 | 8.9 | 23.1 | 40.3 | 54.0 | 63.6 | 68.3 | 66.1 | 55.2 | 43.7 | 26.3 | 9.5 | 38.4 |
| Highest Mean Temperature (F) | 17.3 | 24.1 | 33.3 | 49.7 | 65.0 | 68.4 | 72.4 | 71.9 | 60.4 | 56.4 | 34.3 | 21.1 | 43.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1989 | 1961 | 1963 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -9.1 | -4.1 | 11.5 | 32.7 | 47.3 | 56.3 | 63.5 | 60.0 | 48.0 | 37.9 | 14.2 | -3.1 | 35.6 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1979 | 1982 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1985 |
| Mean Min. Temperature (F) | -8.9 | -2.9 | 11.9 | 28.2 | 41.3 | 51.5 | 55.8 | 53.3 | 42.8 | 32.1 | 17.1 | -0.4 | 26.8 |
| Highest Mean Min. Temperature (F) | 6.6 | 15.2 | 23.9 | 33.6 | 52.2 | 57.6 | 60.5 | 58.7 | 47.6 | 42.3 | 25.0 | 10.5 | 32.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1963 | 1966 | 1969 | 1963 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -22.4 | -16.2 | 0.3 | 22.7 | 33.7 | 43.1 | 51.5 | 47.4 | 35.9 | 25.0 | 3.9 | -12.6 | 24.0 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1979 | 1983 | 1982 | 1990 | 1977 | 1974 | 1976 | 1985 | 1985 | 1989 |
| Mean Precipitation (in.) | 0.71 | 0.47 | 1.04 | 1.73 | 2.87 | 3.79 | 3.30 | 3.25 | 2.72 | 2.32 | 0.84 | 0.75 | 23.79 |
| Highest Precipitation (in.) | 2.42 | 1.27 | 3.06 | 5.64 | 7.76 | 7.39 | 8.07 | 6.87 | 10.04 | 10.14 | 3.45 | 1.84 | 33.18 |
| Year Highest Occurred | 1989 | 1984 | 1966 | 1964 | 1962 | 1984 | 1985 | 1974 | 1973 | 1984 | 1977 | 1968 | 1962 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.06 | 0.00 | 0.41 | 0.76 | 0.53 | 1.01 | 0.44 | 0.13 | 0.00 | 0.08 | 12.59 |
| Year Lowest Occurred | 1973 | 1989 | 1986 | 1980 | 1976 | 1961 | 1967 | 1982 | 1979 | 1963 | 1990 | 1979 | 1976 |
| Heating Degree Days (F) | 1944. | 1571. | 1299. | 741. | 363. | 115. | 32. | 83. | 305. | 660. | 1161. | 1721. | 9995. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 22. | 73. | 134. | 117. | 11. | 0. | 0. | 0. | 357. |