| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.1 | 24.3 | 35.7 | 51.5 | 65.4 | 73.8 | 79.0 | 75.7 | 65.7 | 55.0 | 38.2 | 23.5 | 50.6 |
| Highest Mean Max. Temperature (F) | 30.4 | 33.6 | 45.3 | 59.7 | 75.9 | 79.9 | 83.6 | 79.9 | 70.4 | 66.7 | 45.4 | 29.7 | 53.5 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1976 | 1969 | 1978 | 1963 | 1975 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.3 | 17.7 | 28.6 | 44.8 | 56.6 | 65.1 | 74.8 | 72.1 | 61.2 | 47.9 | 31.5 | 12.8 | 47.9 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1983 | 1983 | 1969 | 1978 | 1985 | 1965 | 1987 | 1985 | 1983 | 1982 |
| Mean Temperature (F) | 8.9 | 12.8 | 25.4 | 40.9 | 53.2 | 62.0 | 67.1 | 64.2 | 54.8 | 44.6 | 29.8 | 14.9 | 39.9 |
| Highest Mean Temperature (F) | 21.0 | 22.1 | 35.3 | 46.8 | 62.1 | 66.0 | 70.2 | 68.0 | 59.2 | 54.9 | 36.3 | 23.6 | 43.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1963 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -2.1 | 5.7 | 18.7 | 34.8 | 46.8 | 55.0 | 63.8 | 60.9 | 50.8 | 37.9 | 22.5 | 2.1 | 37.5 |
| Year Lowest Occurred | 1982 | 1967 | 1984 | 1975 | 1983 | 1969 | 1984 | 1982 | 1974 | 1987 | 1976 | 1983 | 1982 |
| Mean Min. Temperature (F) | -1.3 | 1.2 | 15.1 | 30.2 | 41.1 | 50.2 | 55.1 | 52.6 | 43.8 | 34.0 | 21.4 | 6.2 | 29.1 |
| Highest Mean Min. Temperature (F) | 11.5 | 12.4 | 26.4 | 35.0 | 48.3 | 53.4 | 58.7 | 56.5 | 48.0 | 43.1 | 27.7 | 17.5 | 32.6 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1977 | 1963 | 1983 | 1988 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -15.0 | -8.2 | 5.7 | 23.6 | 34.1 | 43.8 | 51.2 | 47.6 | 39.1 | 27.9 | 12.2 | -8.6 | 26.5 |
| Year Lowest Occurred | 1982 | 1967 | 1969 | 1975 | 1967 | 1982 | 1984 | 1967 | 1974 | 1987 | 1976 | 1983 | 1989 |
| Mean Precipitation (in.) | 0.88 | 0.82 | 1.78 | 2.57 | 3.27 | 3.83 | 3.68 | 4.16 | 4.40 | 2.54 | 2.08 | 1.36 | 31.37 |
| Highest Precipitation (in.) | 2.63 | 2.53 | 4.79 | 5.15 | 7.56 | 8.71 | 10.39 | 10.04 | 8.52 | 4.82 | 4.40 | 2.97 | 39.32 |
| Year Highest Occurred | 1969 | 1971 | 1977 | 1976 | 1973 | 1990 | 1978 | 1972 | 1965 | 1970 | 1985 | 1968 | 1985 |
| Lowest Precipitation (in.) | 0.03 | 0.07 | 0.21 | 0.79 | 1.08 | 0.87 | 1.82 | 1.69 | 0.81 | 0.44 | 0.10 | 0.40 | 20.73 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1971 | 1966 | 1964 | 1989 | 1970 | 1979 | 1964 | 1976 | 1986 | 1989 |
| Heating Degree Days (F) | 1739. | 1462. | 1228. | 723. | 383. | 134. | 39. | 79. | 306. | 632. | 1056. | 1553. | 9334. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 17. | 44. | 104. | 54. | 0. | 0. | 0. | 0. | 219. |