| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 18.1 | 24.1 | 36.2 | 51.7 | 65.1 | 73.3 | 78.2 | 75.0 | 65.3 | 54.7 | 38.1 | 23.0 | 50.2 |
| Highest Mean Max. Temperature (F) | 31.6 | 35.8 | 43.8 | 60.4 | 75.9 | 80.0 | 83.1 | 79.4 | 70.1 | 69.3 | 44.9 | 30.0 | 54.7 |
| Year Highest Occurred | 1990 | 1987 | 1987 | 1987 | 1977 | 1988 | 1988 | 1969 | 1978 | 1963 | 1975 | 1987 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.1 | 17.0 | 27.8 | 45.0 | 57.8 | 65.0 | 73.7 | 69.9 | 58.7 | 48.0 | 30.8 | 12.1 | 46.9 |
| Year Lowest Occurred | 1977 | 1963 | 1965 | 1975 | 1973 | 1969 | 1978 | 1977 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 6.5 | 11.2 | 24.7 | 40.0 | 52.0 | 60.6 | 65.8 | 63.0 | 54.0 | 43.6 | 29.5 | 13.3 | 38.7 |
| Highest Mean Temperature (F) | 19.3 | 22.9 | 35.0 | 45.6 | 60.7 | 64.7 | 69.9 | 68.2 | 58.9 | 53.5 | 35.0 | 22.5 | 43.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1987 | 1983 | 1983 | 1978 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -4.3 | 3.0 | 14.7 | 34.0 | 45.9 | 54.0 | 60.9 | 58.8 | 48.2 | 37.6 | 21.0 | 2.3 | 35.9 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1966 | 1969 | 1965 | 1977 | 1965 | 1976 | 1976 | 1983 | 1972 |
| Mean Min. Temperature (F) | -5.1 | -1.7 | 13.1 | 28.2 | 38.8 | 47.7 | 53.3 | 51.1 | 42.6 | 32.3 | 20.8 | 3.4 | 27.0 |
| Highest Mean Min. Temperature (F) | 6.9 | 15.9 | 26.3 | 32.9 | 45.5 | 52.7 | 58.6 | 57.4 | 47.7 | 40.0 | 25.7 | 14.9 | 31.9 |
| Year Highest Occurred | 1990 | 1983 | 1973 | 1986 | 1977 | 1971 | 1983 | 1983 | 1978 | 1971 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -17.4 | -11.9 | 1.6 | 23.0 | 32.3 | 42.9 | 46.9 | 45.7 | 37.3 | 25.1 | 10.4 | -9.6 | 23.7 |
| Year Lowest Occurred | 1966 | 1989 | 1965 | 1975 | 1966 | 1969 | 1965 | 1964 | 1976 | 1976 | 1976 | 1976 | 1965 |
| Mean Precipitation (in.) | 0.98 | 0.74 | 1.72 | 2.36 | 3.32 | 3.89 | 4.42 | 4.44 | 4.44 | 2.85 | 1.78 | 1.27 | 32.21 |
| Highest Precipitation (in.) | 2.95 | 2.55 | 3.77 | 3.94 | 6.11 | 10.35 | 9.01 | 8.30 | 8.97 | 5.89 | 5.13 | 3.14 | 45.12 |
| Year Highest Occurred | 1969 | 1981 | 1979 | 1964 | 1982 | 1968 | 1978 | 1980 | 1990 | 1970 | 1975 | 1965 | 1968 |
| Lowest Precipitation (in.) | 0.05 | 0.05 | 0.19 | 0.52 | 0.85 | 1.44 | 1.84 | 1.18 | 1.57 | 0.46 | 0.22 | 0.28 | 18.77 |
| Year Lowest Occurred | 1981 | 1969 | 1969 | 1988 | 1966 | 1961 | 1963 | 1968 | 1976 | 1976 | 1981 | 1976 | 1976 |
| Heating Degree Days (F) | 1814. | 1506. | 1249. | 750. | 417. | 160. | 62. | 114. | 330. | 663. | 1065. | 1603. | 9733. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 14. | 28. | 87. | 52. | 0. | 0. | 0. | 0. | 181. |