| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 15.1 | 21.8 | 34.8 | 49.9 | 64.8 | 72.2 | 77.9 | 74.7 | 63.4 | 51.1 | 34.0 | 19.4 | 48.3 |
| Highest Mean Max. Temperature (F) | 26.9 | 34.1 | 43.5 | 64.8 | 77.1 | 81.9 | 83.9 | 83.2 | 68.4 | 62.9 | 42.6 | 27.2 | 53.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1976 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | 6.6 | 12.7 | 23.6 | 38.0 | 51.1 | 60.0 | 69.2 | 66.5 | 53.2 | 44.9 | 26.0 | 11.0 | 43.4 |
| Year Lowest Occurred | 1963 | 1967 | 1965 | 1966 | 1966 | 1969 | 1965 | 1964 | 1965 | 1969 | 1985 | 1983 | 1965 |
| Mean Temperature (F) | 4.1 | 9.4 | 22.0 | 37.1 | 50.8 | 59.6 | 65.8 | 63.1 | 53.3 | 42.3 | 26.5 | 9.9 | 37.0 |
| Highest Mean Temperature (F) | 13.9 | 24.6 | 32.1 | 46.3 | 61.3 | 65.6 | 71.8 | 70.5 | 56.8 | 53.4 | 34.3 | 19.7 | 42.4 |
| Year Highest Occurred | 1987 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1983 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -6.8 | -1.2 | 12.1 | 29.9 | 40.9 | 50.2 | 60.1 | 58.1 | 46.0 | 37.0 | 17.9 | -1.0 | 33.7 |
| Year Lowest Occurred | 1982 | 1967 | 1965 | 1966 | 1966 | 1969 | 1962 | 1964 | 1965 | 1976 | 1985 | 1976 | 1972 |
| Mean Min. Temperature (F) | -6.9 | -3.2 | 9.2 | 24.4 | 36.7 | 47.0 | 53.5 | 51.4 | 43.1 | 33.3 | 19.1 | 0.3 | 25.7 |
| Highest Mean Min. Temperature (F) | 4.8 | 15.1 | 20.6 | 30.8 | 45.5 | 50.8 | 59.7 | 57.7 | 47.4 | 43.8 | 27.2 | 13.5 | 30.9 |
| Year Highest Occurred | 1987 | 1987 | 1973 | 1980 | 1977 | 1987 | 1983 | 1983 | 1983 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -21.6 | -15.1 | 0.1 | 15.8 | 30.2 | 40.3 | 49.8 | 46.9 | 36.7 | 26.9 | 9.7 | -13.7 | 21.9 |
| Year Lowest Occurred | 1982 | 1967 | 1989 | 1975 | 1967 | 1969 | 1972 | 1977 | 1974 | 1990 | 1985 | 1976 | 1989 |
| Mean Precipitation (in.) | 1.17 | 0.90 | 1.46 | 1.94 | 2.64 | 3.96 | 3.74 | 4.06 | 3.45 | 2.50 | 1.71 | 1.12 | 28.65 |
| Highest Precipitation (in.) | 3.89 | 2.68 | 3.52 | 5.45 | 5.62 | 7.77 | 9.43 | 10.84 | 9.60 | 7.33 | 3.35 | 3.05 | 39.08 |
| Year Highest Occurred | 1969 | 1981 | 1979 | 1967 | 1970 | 1990 | 1987 | 1988 | 1977 | 1970 | 1988 | 1984 | 1970 |
| Lowest Precipitation (in.) | 0.07 | 0.18 | 0.20 | 0.00 | 0.26 | 1.15 | 1.07 | 1.26 | 1.15 | 0.51 | 0.28 | 0.14 | 21.76 |
| Year Lowest Occurred | 1981 | 1968 | 1969 | 1988 | 1976 | 1961 | 1966 | 1976 | 1976 | 1963 | 1976 | 1982 | 1989 |
| Heating Degree Days (F) | 1888. | 1557. | 1333. | 837. | 457. | 193. | 78. | 132. | 351. | 704. | 1155. | 1708. | 10393. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 17. | 31. | 103. | 73. | 0. | 0. | 0. | 0. | 224. |