| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 16.9 | 24.0 | 36.6 | 53.0 | 66.8 | 74.9 | 80.0 | 77.1 | 66.5 | 55.1 | 36.2 | 20.9 | 50.7 |
| Highest Mean Max. Temperature (F) | 29.2 | 37.3 | 46.0 | 65.7 | 77.6 | 82.9 | 85.3 | 83.6 | 73.1 | 68.2 | 44.4 | 29.0 | 55.5 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1983 | 1976 | 1963 | 1981 | 1982 | 1987 |
| Lowest Mean Max. Temperature (F) | 6.4 | 14.5 | 26.3 | 43.4 | 59.3 | 67.8 | 74.6 | 71.5 | 55.6 | 49.1 | 27.7 | 9.9 | 46.5 |
| Year Lowest Occurred | 1966 | 1979 | 1965 | 1975 | 1979 | 1969 | 1962 | 1977 | 1965 | 1972 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 6.7 | 13.3 | 26.4 | 41.8 | 54.9 | 63.7 | 68.9 | 66.2 | 56.2 | 45.6 | 28.7 | 12.4 | 40.4 |
| Highest Mean Temperature (F) | 20.4 | 27.5 | 34.9 | 50.3 | 64.8 | 70.4 | 73.3 | 72.6 | 59.9 | 56.9 | 36.8 | 21.4 | 44.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -4.6 | 3.4 | 15.4 | 34.4 | 48.3 | 56.7 | 64.0 | 60.8 | 48.6 | 39.5 | 20.0 | 0.5 | 36.9 |
| Year Lowest Occurred | 1966 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1980 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -3.6 | 2.5 | 16.2 | 30.6 | 42.9 | 52.3 | 57.8 | 55.3 | 45.8 | 36.0 | 21.1 | 3.8 | 30.1 |
| Highest Mean Min. Temperature (F) | 11.5 | 17.7 | 27.3 | 35.9 | 52.0 | 57.8 | 62.4 | 61.5 | 49.6 | 45.5 | 29.1 | 15.2 | 34.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1989 | 1983 | 1963 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -15.5 | -9.3 | 4.5 | 25.4 | 36.6 | 45.5 | 52.9 | 50.1 | 40.6 | 29.1 | 12.2 | -9.0 | 27.2 |
| Year Lowest Occurred | 1966 | 1967 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1974 | 1980 | 1985 | 1983 | 1972 |
| Mean Precipitation (in.) | 0.76 | 0.54 | 1.46 | 2.45 | 2.88 | 3.99 | 3.73 | 3.39 | 2.94 | 2.64 | 1.18 | 0.87 | 26.83 |
| Highest Precipitation (in.) | 2.86 | 1.49 | 3.95 | 5.13 | 7.52 | 7.54 | 7.72 | 9.12 | 8.25 | 7.21 | 3.71 | 2.48 | 33.92 |
| Year Highest Occurred | 1969 | 1979 | 1966 | 1985 | 1962 | 1968 | 1973 | 1978 | 1961 | 1984 | 1977 | 1968 | 1985 |
| Lowest Precipitation (in.) | 0.03 | 0.00 | 0.21 | 0.39 | 0.28 | 0.93 | 0.62 | 0.33 | 0.61 | 0.16 | 0.15 | 0.17 | 14.60 |
| Year Lowest Occurred | 1963 | 1968 | 1961 | 1988 | 1976 | 1961 | 1989 | 1969 | 1974 | 1976 | 1990 | 1986 | 1976 |
| Heating Degree Days (F) | 1807. | 1448. | 1197. | 696. | 336. | 105. | 32. | 78. | 273. | 601. | 1089. | 1631. | 9293. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 23. | 66. | 153. | 115. | 9. | 0. | 0. | 0. | 366. |