| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 13.8 | 19.8 | 32.7 | 51.6 | 67.8 | 76.3 | 81.6 | 80.2 | 68.3 | 55.4 | 34.8 | 19.0 | 50.1 |
| Highest Mean Max. Temperature (F) | 28.5 | 30.2 | 42.7 | 65.2 | 79.8 | 85.7 | 87.3 | 88.8 | 75.9 | 70.0 | 43.8 | 30.8 | 54.6 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1980 | 1977 | 1988 | 1989 | 1961 | 1963 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 0.8 | 5.4 | 22.6 | 40.2 | 57.8 | 65.7 | 76.3 | 73.4 | 54.9 | 45.5 | 22.1 | 7.6 | 46.2 |
| Year Lowest Occurred | 1966 | 1979 | 1970 | 1979 | 1974 | 1969 | 1972 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 4.3 | 10.4 | 24.0 | 41.5 | 55.1 | 64.2 | 69.1 | 67.0 | 56.2 | 44.5 | 26.5 | 10.3 | 39.4 |
| Highest Mean Temperature (F) | 18.7 | 24.2 | 35.4 | 50.3 | 66.9 | 71.4 | 73.9 | 73.0 | 61.7 | 57.1 | 36.0 | 21.8 | 43.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1989 | 1983 | 1978 | 1963 | 1981 | 1982 | 1987 |
| Lowest Mean Temperature (F) | -7.9 | -4.1 | 9.6 | 33.0 | 48.1 | 54.9 | 63.1 | 60.8 | 46.3 | 38.8 | 11.6 | 0.1 | 36.1 |
| Year Lowest Occurred | 1966 | 1979 | 1970 | 1979 | 1979 | 1969 | 1972 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -5.3 | 1.0 | 15.3 | 31.3 | 42.4 | 52.0 | 56.5 | 53.7 | 44.1 | 33.5 | 18.2 | 1.5 | 28.7 |
| Highest Mean Min. Temperature (F) | 8.9 | 18.2 | 29.3 | 36.3 | 54.0 | 57.6 | 61.1 | 59.3 | 48.8 | 44.2 | 28.1 | 15.1 | 33.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1970 | 1964 | 1983 | 1978 | 1963 | 1981 | 1982 | 1987 |
| Lowest Mean Min. Temperature (F) | -17.7 | -13.5 | -3.4 | 25.8 | 36.5 | 44.1 | 49.8 | 48.2 | 37.7 | 26.0 | 1.0 | -8.3 | 25.6 |
| Year Lowest Occurred | 1982 | 1979 | 1970 | 1979 | 1967 | 1969 | 1972 | 1977 | 1965 | 1976 | 1985 | 1985 | 1972 |
| Mean Precipitation (in.) | 0.72 | 0.49 | 0.94 | 1.35 | 2.05 | 2.84 | 2.72 | 2.41 | 2.24 | 1.29 | 0.65 | 0.64 | 18.34 |
| Highest Precipitation (in.) | 1.76 | 1.54 | 3.08 | 3.62 | 4.87 | 7.88 | 7.31 | 5.10 | 5.57 | 5.00 | 2.70 | 1.96 | 25.23 |
| Year Highest Occurred | 1967 | 1987 | 1966 | 1974 | 1962 | 1964 | 1966 | 1974 | 1965 | 1982 | 1977 | 1988 | 1965 |
| Lowest Precipitation (in.) | 0.11 | 0.11 | 0.04 | 0.00 | 0.14 | 0.81 | 0.49 | 0.34 | 0.33 | 0.17 | 0.03 | 0.07 | 11.19 |
| Year Lowest Occurred | 1973 | 1989 | 1986 | 1988 | 1967 | 1972 | 1989 | 1967 | 1984 | 1989 | 1990 | 1979 | 1963 |
| Heating Degree Days (F) | 1882. | 1529. | 1271. | 705. | 344. | 123. | 38. | 76. | 278. | 636. | 1155. | 1696. | 9733. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 37. | 99. | 165. | 138. | 14. | 0. | 0. | 0. | 453. |