| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 11.5 | 18.0 | 31.9 | 51.3 | 67.7 | 76.0 | 81.5 | 80.3 | 68.5 | 55.5 | 34.6 | 17.8 | 49.6 |
| Highest Mean Max. Temperature (F) | 25.1 | 31.0 | 42.4 | 64.5 | 79.6 | 87.0 | 87.1 | 87.5 | 75.8 | 67.0 | 44.4 | 27.6 | 54.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1961 | 1990 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | -1.7 | 4.8 | 21.5 | 40.5 | 58.1 | 67.7 | 76.5 | 72.5 | 58.0 | 46.7 | 24.3 | 7.0 | 45.7 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1979 | 1979 | 1969 | 1971 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 0.9 | 6.7 | 21.5 | 40.0 | 54.2 | 63.3 | 68.2 | 66.1 | 55.4 | 43.6 | 25.5 | 8.2 | 37.8 |
| Highest Mean Temperature (F) | 15.0 | 22.3 | 34.4 | 49.5 | 65.7 | 72.1 | 71.7 | 71.2 | 60.4 | 54.3 | 35.4 | 19.1 | 43.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1966 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -12.3 | -6.7 | 8.9 | 30.7 | 47.0 | 55.1 | 63.2 | 60.3 | 47.3 | 38.0 | 14.0 | -1.7 | 34.2 |
| Year Lowest Occurred | 1966 | 1979 | 1970 | 1979 | 1979 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -9.7 | -4.5 | 11.0 | 28.6 | 40.6 | 50.5 | 54.9 | 52.0 | 42.2 | 31.7 | 16.3 | -1.4 | 26.0 |
| Highest Mean Min. Temperature (F) | 4.9 | 13.5 | 26.3 | 34.4 | 51.7 | 57.1 | 59.8 | 56.2 | 47.4 | 41.5 | 26.4 | 12.2 | 31.5 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1966 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -24.2 | -18.1 | -6.4 | 20.8 | 34.9 | 42.5 | 49.8 | 46.2 | 36.5 | 23.6 | 3.6 | -10.9 | 22.6 |
| Year Lowest Occurred | 1979 | 1979 | 1970 | 1979 | 1983 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1985 | 1989 |
| Mean Precipitation (in.) | 0.83 | 0.56 | 0.97 | 1.34 | 2.06 | 3.08 | 2.85 | 2.13 | 2.35 | 1.30 | 0.73 | 0.69 | 18.89 |
| Highest Precipitation (in.) | 3.04 | 1.56 | 2.24 | 3.94 | 4.59 | 6.68 | 5.83 | 7.07 | 5.18 | 4.57 | 3.24 | 1.45 | 27.36 |
| Year Highest Occurred | 1969 | 1987 | 1970 | 1979 | 1978 | 1964 | 1968 | 1985 | 1981 | 1982 | 1977 | 1988 | 1968 |
| Lowest Precipitation (in.) | 0.00 | 0.16 | 0.05 | 0.00 | 0.22 | 0.42 | 0.71 | 0.59 | 0.36 | 0.19 | 0.00 | 0.00 | 12.40 |
| Year Lowest Occurred | 1963 | 1990 | 1961 | 1988 | 1980 | 1961 | 1989 | 1988 | 1976 | 1978 | 1990 | 1979 | 1967 |
| Heating Degree Days (F) | 1987. | 1632. | 1349. | 750. | 363. | 130. | 36. | 87. | 296. | 663. | 1185. | 1761. | 10239. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 28. | 79. | 135. | 121. | 8. | 0. | 0. | 0. | 371. |