| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.5 | 26.9 | 38.9 | 54.8 | 68.5 | 76.7 | 81.4 | 78.5 | 68.7 | 57.3 | 38.8 | 23.4 | 52.8 |
| Highest Mean Max. Temperature (F) | 32.3 | 38.4 | 48.3 | 66.8 | 78.2 | 85.0 | 88.3 | 84.6 | 74.4 | 69.5 | 45.8 | 31.9 | 57.6 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1961 | 1976 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.1 | 17.9 | 29.9 | 46.1 | 61.8 | 69.4 | 76.4 | 73.1 | 58.6 | 52.0 | 30.8 | 12.2 | 49.7 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1979 | 1969 | 1971 | 1977 | 1965 | 1980 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 7.8 | 14.3 | 27.1 | 42.2 | 55.1 | 63.8 | 68.9 | 66.3 | 57.0 | 46.4 | 30.0 | 13.6 | 41.0 |
| Highest Mean Temperature (F) | 21.8 | 27.9 | 35.9 | 50.3 | 63.4 | 68.5 | 72.7 | 72.4 | 62.0 | 57.3 | 35.7 | 23.4 | 45.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Temperature (F) | -4.1 | 5.4 | 16.4 | 35.7 | 48.6 | 57.1 | 63.7 | 60.1 | 49.6 | 40.3 | 22.4 | 1.6 | 37.9 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -3.9 | 1.6 | 15.2 | 29.5 | 41.7 | 50.8 | 56.2 | 54.0 | 45.3 | 35.5 | 21.2 | 3.7 | 29.2 |
| Highest Mean Min. Temperature (F) | 11.3 | 17.4 | 26.0 | 34.5 | 48.5 | 54.2 | 61.1 | 60.7 | 50.2 | 45.1 | 26.0 | 16.3 | 34.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1986 | 1977 | 1984 | 1983 | 1983 | 1978 | 1963 | 1962 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -17.4 | -9.5 | 2.8 | 24.3 | 35.1 | 44.2 | 51.0 | 47.1 | 40.6 | 27.1 | 12.1 | -9.1 | 25.7 |
| Year Lowest Occurred | 1982 | 1967 | 1965 | 1982 | 1967 | 1982 | 1971 | 1977 | 1965 | 1976 | 1976 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.88 | 0.58 | 1.39 | 2.06 | 3.06 | 4.39 | 3.88 | 3.63 | 3.42 | 2.35 | 1.27 | 0.87 | 27.78 |
| Highest Precipitation (in.) | 3.56 | 3.07 | 3.03 | 4.21 | 5.52 | 8.99 | 11.04 | 9.94 | 10.67 | 6.13 | 3.58 | 1.85 | 40.15 |
| Year Highest Occurred | 1975 | 1971 | 1979 | 1981 | 1978 | 1965 | 1972 | 1978 | 1986 | 1971 | 1965 | 1969 | 1965 |
| Lowest Precipitation (in.) | 0.03 | 0.06 | 0.24 | 0.18 | 1.17 | 0.99 | 1.33 | 0.31 | 0.50 | 0.40 | 0.19 | 0.17 | 14.72 |
| Year Lowest Occurred | 1963 | 1968 | 1969 | 1987 | 1976 | 1961 | 1984 | 1969 | 1976 | 1964 | 1976 | 1979 | 1976 |
| Heating Degree Days (F) | 1773. | 1420. | 1175. | 684. | 326. | 101. | 32. | 74. | 248. | 577. | 1050. | 1593. | 9053. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 65. | 152. | 114. | 8. | 0. | 0. | 0. | 358. |