| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.8 | 27.9 | 40.1 | 56.8 | 69.8 | 79.1 | 83.3 | 80.1 | 71.4 | 60.2 | 41.9 | 26.1 | 54.9 |
| Highest Mean Max. Temperature (F) | 36.5 | 43.9 | 55.1 | 65.5 | 77.9 | 85.3 | 90.1 | 87.9 | 77.0 | 71.5 | 49.9 | 35.9 | 59.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1974 | 1983 | 1978 | 1963 | 1980 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.8 | 15.4 | 26.5 | 45.1 | 64.3 | 72.6 | 79.2 | 73.9 | 62.2 | 54.3 | 29.1 | 13.8 | 51.4 |
| Year Lowest Occurred | 1979 | 1978 | 1965 | 1975 | 1968 | 1969 | 1990 | 1977 | 1965 | 1969 | 1985 | 1983 | 1978 |
| Mean Temperature (F) | 11.6 | 17.4 | 29.8 | 44.6 | 57.4 | 67.1 | 71.6 | 68.3 | 59.1 | 47.5 | 31.8 | 16.8 | 43.6 |
| Highest Mean Temperature (F) | 25.6 | 31.1 | 38.9 | 51.1 | 63.6 | 72.5 | 76.1 | 74.4 | 64.0 | 57.3 | 37.5 | 27.1 | 47.6 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1981 | 1988 | 1988 | 1974 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -0.7 | 5.3 | 18.2 | 38.5 | 52.0 | 61.1 | 68.3 | 63.3 | 52.5 | 42.4 | 21.3 | 3.4 | 40.9 |
| Year Lowest Occurred | 1979 | 1979 | 1969 | 1975 | 1983 | 1969 | 1972 | 1985 | 1965 | 1976 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 1.4 | 6.8 | 19.5 | 32.4 | 44.9 | 55.0 | 59.8 | 56.5 | 46.8 | 34.8 | 21.6 | 7.5 | 32.3 |
| Highest Mean Min. Temperature (F) | 14.6 | 18.3 | 29.9 | 37.3 | 51.5 | 60.4 | 63.6 | 60.8 | 51.5 | 43.0 | 27.6 | 19.4 | 36.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1981 | 1962 | 1971 | 1964 | 1983 | 1990 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -11.3 | -5.2 | 8.3 | 26.3 | 38.3 | 48.5 | 54.7 | 50.9 | 40.9 | 28.9 | 13.2 | -7.1 | 29.6 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1982 | 1983 | 1985 | 1985 | 1985 | 1984 | 1987 | 1976 | 1983 | 1985 |
| Mean Precipitation (in.) | 0.57 | 0.77 | 1.96 | 2.71 | 3.26 | 4.14 | 3.41 | 4.27 | 3.39 | 2.04 | 1.12 | 0.84 | 28.48 |
| Highest Precipitation (in.) | 2.09 | 4.13 | 5.17 | 6.56 | 8.32 | 8.80 | 8.76 | 14.36 | 7.83 | 7.33 | 3.83 | 2.87 | 47.83 |
| Year Highest Occurred | 1975 | 1962 | 1987 | 1984 | 1965 | 1984 | 1978 | 1979 | 1965 | 1968 | 1983 | 1982 | 1979 |
| Lowest Precipitation (in.) | 0.07 | 0.03 | 0.23 | 0.08 | 0.85 | 1.89 | 0.13 | 0.59 | 0.53 | 0.00 | 0.03 | 0.03 | 17.28 |
| Year Lowest Occurred | 1990 | 1987 | 1978 | 1981 | 1963 | 1980 | 1975 | 1970 | 1967 | 1975 | 1976 | 1979 | 1976 |
| Heating Degree Days (F) | 1655. | 1333. | 1091. | 612. | 261. | 53. | 8. | 40. | 194. | 543. | 996. | 1494. | 8280. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 26. | 116. | 213. | 143. | 17. | 0. | 0. | 0. | 515. |