| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 15.8 | 22.3 | 35.2 | 53.0 | 67.4 | 76.4 | 81.9 | 80.0 | 68.8 | 56.4 | 37.1 | 20.7 | 51.3 |
| Highest Mean Max. Temperature (F) | 30.1 | 36.1 | 48.3 | 63.5 | 75.2 | 84.3 | 87.8 | 86.5 | 74.5 | 68.1 | 45.4 | 29.4 | 55.3 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1974 | 1976 | 1976 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 2.8 | 9.7 | 25.6 | 42.7 | 60.0 | 68.1 | 77.6 | 71.1 | 56.9 | 50.1 | 26.2 | 7.6 | 46.9 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1979 | 1985 | 1979 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 5.5 | 11.6 | 25.3 | 42.1 | 55.9 | 65.2 | 70.6 | 68.4 | 57.3 | 45.1 | 28.5 | 11.8 | 40.6 |
| Highest Mean Temperature (F) | 20.7 | 27.4 | 35.4 | 51.0 | 64.0 | 72.7 | 74.9 | 73.6 | 63.6 | 55.7 | 36.5 | 21.0 | 45.6 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1989 | 1983 | 1978 | 1963 | 1981 | 1982 | 1987 |
| Lowest Mean Temperature (F) | -7.8 | -1.1 | 14.6 | 34.7 | 49.6 | 57.5 | 66.0 | 60.8 | 47.5 | 39.8 | 17.6 | -1.7 | 37.3 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -4.9 | 1.0 | 15.3 | 31.1 | 44.2 | 54.0 | 59.4 | 56.7 | 45.9 | 33.9 | 19.7 | 2.7 | 29.9 |
| Highest Mean Min. Temperature (F) | 11.3 | 18.7 | 25.8 | 38.4 | 53.1 | 61.0 | 64.1 | 63.9 | 53.3 | 43.2 | 27.6 | 13.9 | 35.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -18.7 | -12.1 | 3.6 | 24.9 | 36.8 | 44.8 | 53.6 | 50.0 | 38.0 | 27.0 | 9.0 | -11.0 | 27.0 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1961 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1972 |
| Mean Precipitation (in.) | 0.73 | 0.54 | 1.13 | 2.12 | 2.63 | 3.72 | 3.27 | 3.02 | 2.42 | 1.74 | 0.89 | 0.66 | 22.87 |
| Highest Precipitation (in.) | 3.08 | 1.41 | 2.25 | 4.89 | 7.06 | 9.52 | 7.33 | 6.84 | 6.60 | 6.33 | 4.43 | 2.38 | 35.62 |
| Year Highest Occurred | 1975 | 1962 | 1990 | 1964 | 1962 | 1984 | 1962 | 1966 | 1965 | 1984 | 1977 | 1968 | 1962 |
| Lowest Precipitation (in.) | 0.09 | 0.02 | 0.25 | 0.05 | 0.48 | 0.72 | 0.43 | 0.23 | 0.31 | 0.11 | 0.05 | 0.04 | 10.12 |
| Year Lowest Occurred | 1978 | 1988 | 1978 | 1980 | 1980 | 1987 | 1967 | 1969 | 1979 | 1978 | 1990 | 1986 | 1976 |
| Heating Degree Days (F) | 1845. | 1495. | 1231. | 687. | 305. | 93. | 20. | 52. | 248. | 617. | 1095. | 1649. | 9337. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 23. | 99. | 193. | 157. | 17. | 0. | 0. | 0. | 489. |