| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.0 | 27.4 | 39.7 | 56.7 | 69.6 | 78.8 | 82.7 | 80.0 | 71.6 | 60.2 | 41.7 | 25.4 | 54.6 |
| Highest Mean Max. Temperature (F) | 35.4 | 42.4 | 52.9 | 66.5 | 79.5 | 87.7 | 87.3 | 85.1 | 77.7 | 71.7 | 48.7 | 35.5 | 60.2 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1976 | 1988 | 1988 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.8 | 19.1 | 27.1 | 46.4 | 62.0 | 71.6 | 76.8 | 76.1 | 64.6 | 54.7 | 32.9 | 10.7 | 51.0 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1983 | 1983 | 1969 | 1971 | 1986 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 11.7 | 17.6 | 30.8 | 45.7 | 57.8 | 67.2 | 71.4 | 68.5 | 60.0 | 48.9 | 33.1 | 17.2 | 44.2 |
| Highest Mean Temperature (F) | 26.7 | 32.7 | 39.5 | 54.0 | 66.7 | 74.6 | 75.8 | 73.9 | 65.4 | 58.8 | 40.8 | 27.9 | 50.4 |
| Year Highest Occurred | 1989 | 1987 | 1977 | 1977 | 1977 | 1988 | 1986 | 1988 | 1988 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -1.1 | 8.4 | 18.0 | 38.5 | 52.6 | 60.0 | 64.7 | 65.0 | 54.9 | 43.7 | 25.4 | 3.0 | 40.8 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1983 | 1967 | 1969 | 1971 | 1967 | 1962 | 1976 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | 2.3 | 7.8 | 21.8 | 34.6 | 46.0 | 55.6 | 60.0 | 56.9 | 48.4 | 37.5 | 24.5 | 9.0 | 33.7 |
| Highest Mean Min. Temperature (F) | 18.0 | 22.9 | 31.0 | 42.0 | 55.4 | 61.5 | 66.7 | 62.9 | 53.4 | 45.9 | 33.6 | 20.3 | 40.5 |
| Year Highest Occurred | 1989 | 1987 | 1977 | 1977 | 1977 | 1988 | 1986 | 1990 | 1986 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -11.0 | -2.3 | 8.8 | 28.6 | 39.6 | 48.3 | 52.5 | 51.8 | 41.9 | 31.1 | 15.0 | -4.8 | 30.4 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1961 | 1966 | 1969 | 1971 | 1967 | 1962 | 1976 | 1976 | 1983 | 1972 |
| Mean Precipitation (in.) | 0.97 | 0.77 | 1.66 | 2.70 | 3.70 | 3.99 | 4.29 | 4.05 | 3.74 | 2.38 | 1.59 | 1.18 | 31.02 |
| Highest Precipitation (in.) | 3.68 | 3.03 | 4.05 | 5.23 | 7.62 | 9.82 | 9.50 | 10.23 | 11.32 | 7.38 | 5.46 | 3.43 | 43.68 |
| Year Highest Occurred | 1973 | 1971 | 1976 | 1990 | 1982 | 1969 | 1990 | 1980 | 1965 | 1970 | 1975 | 1975 | 1973 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.18 | 1.58 | 1.21 | 0.77 | 1.03 | 0.52 | 0.26 | 0.00 | 0.00 | 18.14 |
| Year Lowest Occurred | 1988 | 1990 | 1984 | 1983 | 1967 | 1961 | 1975 | 1976 | 1979 | 1975 | 1983 | 1989 | 1976 |
| Heating Degree Days (F) | 1652. | 1327. | 1060. | 579. | 264. | 58. | 20. | 33. | 174. | 499. | 957. | 1482. | 8105. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 41. | 124. | 218. | 141. | 24. | 0. | 0. | 0. | 548. |