| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 30.9 | 36.8 | 46.2 | 57.7 | 68.6 | 79.4 | 86.4 | 83.8 | 73.8 | 62.3 | 45.6 | 34.0 | 58.8 |
| Highest Mean Max. Temperature (F) | 41.9 | 45.6 | 57.1 | 65.9 | 75.1 | 87.3 | 90.5 | 88.4 | 81.1 | 70.8 | 51.8 | 46.5 | 61.6 |
| Year Highest Occurred | 1981 | 1963 | 1972 | 1989 | 1969 | 1988 | 1989 | 1970 | 1990 | 1988 | 1962 | 1980 | 1987 |
| Lowest Mean Max. Temperature (F) | 17.6 | 25.9 | 37.1 | 50.0 | 62.4 | 72.7 | 81.8 | 77.1 | 63.2 | 51.3 | 36.3 | 22.5 | 55.3 |
| Year Lowest Occurred | 1984 | 1989 | 1965 | 1968 | 1983 | 1967 | 1965 | 1968 | 1965 | 1969 | 1979 | 1978 | 1984 |
| Mean Temperature (F) | 15.4 | 21.0 | 30.9 | 41.3 | 50.6 | 59.8 | 66.5 | 64.2 | 54.3 | 43.4 | 30.1 | 18.3 | 41.3 |
| Highest Mean Temperature (F) | 25.3 | 30.1 | 38.8 | 46.9 | 54.5 | 66.1 | 69.3 | 68.8 | 60.9 | 48.1 | 36.1 | 29.5 | 44.0 |
| Year Highest Occurred | 1969 | 1970 | 1986 | 1990 | 1963 | 1988 | 1988 | 1971 | 1990 | 1988 | 1965 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 1.2 | 9.9 | 20.6 | 35.2 | 45.9 | 55.0 | 64.1 | 59.3 | 48.5 | 37.3 | 20.2 | 7.8 | 37.8 |
| Year Lowest Occurred | 1984 | 1985 | 1964 | 1968 | 1983 | 1975 | 1979 | 1968 | 1965 | 1969 | 1979 | 1978 | 1984 |
| Mean Min. Temperature (F) | -0.2 | 5.2 | 15.6 | 24.8 | 32.6 | 40.0 | 46.5 | 44.6 | 34.7 | 24.5 | 14.6 | 2.6 | 23.8 |
| Highest Mean Min. Temperature (F) | 12.6 | 16.6 | 22.5 | 31.6 | 35.6 | 44.9 | 49.3 | 50.8 | 40.6 | 31.2 | 21.5 | 12.4 | 26.4 |
| Year Highest Occurred | 1969 | 1986 | 1978 | 1965 | 1963 | 1988 | 1985 | 1963 | 1990 | 1972 | 1965 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -15.3 | -12.0 | 3.9 | 20.3 | 29.4 | 36.6 | 43.4 | 39.5 | 28.2 | 20.0 | 4.1 | -7.5 | 20.3 |
| Year Lowest Occurred | 1984 | 1985 | 1964 | 1968 | 1983 | 1975 | 1979 | 1974 | 1968 | 1970 | 1979 | 1972 | 1984 |
| Mean Precipitation (in.) | 0.79 | 0.75 | 1.16 | 1.28 | 1.26 | 1.00 | 0.99 | 1.01 | 1.15 | 1.38 | 1.16 | 1.06 | 12.99 |
| Highest Precipitation (in.) | 2.15 | 2.12 | 4.11 | 3.35 | 3.27 | 2.74 | 2.92 | 2.46 | 3.97 | 4.79 | 3.04 | 3.25 | 19.02 |
| Year Highest Occurred | 1980 | 1990 | 1979 | 1985 | 1979 | 1984 | 1985 | 1963 | 1982 | 1981 | 1964 | 1983 | 1978 |
| Lowest Precipitation (in.) | 0.05 | 0.14 | 0.28 | 0.09 | 0.00 | 0.04 | 0.05 | 0.05 | 0.10 | 0.00 | 0.09 | 0.10 | 6.07 |
| Year Lowest Occurred | 1961 | 1973 | 1966 | 1966 | 1969 | 1971 | 1962 | 1985 | 1987 | 1988 | 1976 | 1976 | 1989 |
| Heating Degree Days (F) | 1538. | 1232. | 1057. | 711. | 446. | 179. | 28. | 81. | 328. | 670. | 1047. | 1448. | 8765. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 23. | 74. | 56. | 7. | 0. | 0. | 0. | 160. |