| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.5 | 26.4 | 37.5 | 52.4 | 66.1 | 74.9 | 81.0 | 78.1 | 68.5 | 57.1 | 39.2 | 24.8 | 52.2 |
| Highest Mean Max. Temperature (F) | 30.8 | 40.7 | 47.1 | 67.3 | 77.2 | 84.4 | 90.3 | 83.9 | 73.2 | 69.9 | 46.3 | 33.1 | 59.2 |
| Year Highest Occurred | 1989 | 1987 | 1968 | 1987 | 1988 | 1988 | 1988 | 1969 | 1987 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 4.8 | 17.8 | 28.0 | 42.6 | 57.1 | 63.3 | 71.7 | 68.7 | 58.9 | 45.7 | 31.8 | 14.3 | 45.5 |
| Year Lowest Occurred | 1982 | 1982 | 1982 | 1982 | 1982 | 1982 | 1982 | 1982 | 1965 | 1981 | 1985 | 1989 | 1982 |
| Mean Temperature (F) | 8.4 | 13.7 | 26.1 | 39.8 | 51.0 | 60.0 | 66.9 | 64.6 | 56.2 | 45.4 | 29.9 | 14.4 | 39.7 |
| Highest Mean Temperature (F) | 18.6 | 27.1 | 34.1 | 46.5 | 57.2 | 63.8 | 71.3 | 69.5 | 59.8 | 56.4 | 36.4 | 23.5 | 43.7 |
| Year Highest Occurred | 1987 | 1987 | 1973 | 1987 | 1977 | 1976 | 1975 | 1983 | 1978 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -7.1 | 2.0 | 17.0 | 33.6 | 46.0 | 51.6 | 61.1 | 57.8 | 49.5 | 37.5 | 21.2 | 2.6 | 35.1 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1982 | 1967 | 1982 | 1982 | 1982 | 1965 | 1988 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -3.8 | 1.1 | 14.6 | 27.1 | 35.9 | 45.1 | 52.6 | 51.1 | 43.9 | 33.7 | 20.6 | 4.0 | 27.2 |
| Highest Mean Min. Temperature (F) | 7.0 | 16.1 | 25.3 | 31.2 | 42.4 | 49.1 | 58.4 | 56.4 | 48.7 | 42.9 | 26.7 | 14.6 | 30.5 |
| Year Highest Occurred | 1987 | 1984 | 1973 | 1981 | 1977 | 1976 | 1975 | 1973 | 1978 | 1963 | 1962 | 1965 | 1973 |
| Lowest Mean Min. Temperature (F) | -18.9 | -15.1 | 4.6 | 20.6 | 30.8 | 39.0 | 46.4 | 46.5 | 38.0 | 20.8 | 10.5 | -9.8 | 21.3 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1988 | 1988 | 1985 | 1988 | 1985 | 1984 | 1988 | 1985 | 1983 | 1988 |
| Mean Precipitation (in.) | 0.90 | 0.67 | 1.64 | 2.33 | 3.41 | 3.90 | 3.87 | 4.37 | 3.89 | 2.49 | 1.79 | 1.18 | 30.44 |
| Highest Precipitation (in.) | 2.86 | 2.24 | 3.63 | 5.84 | 7.49 | 8.91 | 7.77 | 7.84 | 8.35 | 8.25 | 4.70 | 3.91 | 46.92 |
| Year Highest Occurred | 1969 | 1981 | 1965 | 1968 | 1964 | 1967 | 1986 | 1974 | 1986 | 1971 | 1983 | 1968 | 1986 |
| Lowest Precipitation (in.) | 0.10 | 0.05 | 0.32 | 0.25 | 0.30 | 0.60 | 1.52 | 1.10 | 1.10 | 0.12 | 0.26 | 0.11 | 16.70 |
| Year Lowest Occurred | 1981 | 1988 | 1969 | 1987 | 1976 | 1961 | 1975 | 1961 | 1974 | 1964 | 1962 | 1979 | 1976 |
| Heating Degree Days (F) | 1755. | 1436. | 1206. | 756. | 434. | 176. | 58. | 93. | 270. | 608. | 1053. | 1569. | 9414. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 26. | 117. | 81. | 6. | 0. | 0. | 0. | 230. |