| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.0 | 28.1 | 39.7 | 55.6 | 68.3 | 77.0 | 81.6 | 78.8 | 69.9 | 58.5 | 42.6 | 27.6 | 54.2 |
| Highest Mean Max. Temperature (F) | 36.2 | 37.5 | 49.6 | 62.7 | 78.8 | 82.2 | 85.4 | 85.0 | 74.7 | 71.5 | 49.4 | 34.6 | 57.9 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1963 | 1983 | 1983 | 1978 | 1963 | 1975 | 1982 | 1987 |
| Lowest Mean Max. Temperature (F) | 12.5 | 20.8 | 31.7 | 46.6 | 60.8 | 68.0 | 77.2 | 75.5 | 65.6 | 52.6 | 35.7 | 17.3 | 51.6 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1962 | 1986 | 1965 | 1988 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 13.7 | 18.3 | 30.2 | 44.9 | 56.7 | 65.5 | 70.4 | 67.9 | 59.3 | 48.5 | 34.4 | 19.5 | 44.1 |
| Highest Mean Temperature (F) | 27.0 | 28.6 | 38.9 | 50.7 | 65.1 | 69.8 | 74.1 | 72.9 | 63.5 | 59.0 | 40.1 | 28.2 | 47.5 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 2.5 | 10.3 | 23.3 | 37.4 | 50.6 | 58.3 | 66.4 | 64.0 | 54.9 | 42.4 | 26.4 | 9.0 | 41.7 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1986 | 1975 | 1987 | 1976 | 1985 | 1972 |
| Mean Min. Temperature (F) | 4.4 | 8.4 | 20.6 | 34.1 | 45.0 | 54.0 | 59.2 | 56.9 | 48.7 | 38.5 | 26.1 | 11.4 | 33.9 |
| Highest Mean Min. Temperature (F) | 17.7 | 20.8 | 30.5 | 38.8 | 51.4 | 58.6 | 62.7 | 61.7 | 52.7 | 46.8 | 31.3 | 22.0 | 37.1 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1982 | 1971 | 1983 | 1988 | 1990 | 1971 | 1963 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -7.5 | -0.8 | 13.7 | 28.1 | 39.0 | 47.8 | 55.5 | 52.4 | 43.5 | 31.5 | 15.9 | -0.9 | 31.5 |
| Year Lowest Occurred | 1977 | 1978 | 1975 | 1975 | 1967 | 1982 | 1962 | 1967 | 1976 | 1987 | 1976 | 1985 | 1978 |
| Mean Precipitation (in.) | 0.98 | 0.97 | 2.12 | 2.72 | 3.73 | 3.40 | 4.00 | 3.95 | 4.16 | 2.40 | 2.07 | 1.46 | 31.96 |
| Highest Precipitation (in.) | 2.97 | 2.79 | 4.84 | 5.27 | 8.52 | 7.31 | 8.68 | 8.58 | 8.35 | 5.63 | 5.07 | 2.99 | 44.87 |
| Year Highest Occurred | 1967 | 1981 | 1966 | 1981 | 1989 | 1969 | 1982 | 1980 | 1965 | 1984 | 1985 | 1982 | 1984 |
| Lowest Precipitation (in.) | 0.06 | 0.07 | 0.29 | 0.71 | 1.07 | 0.94 | 1.11 | 0.88 | 0.20 | 0.32 | 0.04 | 0.32 | 21.61 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1989 | 1966 | 1988 | 1967 | 1969 | 1979 | 1975 | 1976 | 1989 | 1976 |
| Heating Degree Days (F) | 1590. | 1308. | 1079. | 603. | 291. | 73. | 11. | 33. | 180. | 512. | 918. | 1411. | 8009. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 33. | 88. | 178. | 123. | 9. | 0. | 0. | 0. | 431. |