| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.0 | 24.7 | 36.1 | 51.6 | 65.7 | 73.7 | 78.6 | 75.6 | 66.1 | 54.4 | 37.6 | 23.3 | 50.5 |
| Highest Mean Max. Temperature (F) | 29.5 | 35.5 | 45.8 | 60.3 | 76.3 | 79.1 | 82.7 | 81.4 | 70.0 | 67.3 | 44.3 | 29.8 | 53.6 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1970 | 1969 | 1987 | 1963 | 1975 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.0 | 16.6 | 28.8 | 44.3 | 57.3 | 66.1 | 73.3 | 70.6 | 60.5 | 47.0 | 29.7 | 12.6 | 47.3 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1973 | 1969 | 1978 | 1977 | 1974 | 1988 | 1976 | 1983 | 1979 |
| Mean Temperature (F) | 8.4 | 12.4 | 24.6 | 39.8 | 52.5 | 61.4 | 66.3 | 63.4 | 54.7 | 44.2 | 29.6 | 14.2 | 39.3 |
| Highest Mean Temperature (F) | 18.8 | 22.5 | 34.4 | 44.0 | 61.2 | 65.7 | 70.0 | 68.2 | 58.6 | 53.4 | 34.8 | 23.2 | 41.6 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1968 | 1977 | 1971 | 1983 | 1969 | 1971 | 1963 | 1963 | 1965 | 1968 |
| Lowest Mean Temperature (F) | -3.4 | 3.9 | 17.7 | 32.4 | 45.9 | 54.8 | 61.4 | 58.7 | 48.9 | 37.4 | 20.3 | 2.8 | 36.8 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1982 | 1983 | 1982 | 1985 | 1977 | 1974 | 1976 | 1976 | 1985 | 1979 |
| Mean Min. Temperature (F) | -2.2 | -0.1 | 13.1 | 28.1 | 39.4 | 49.0 | 53.9 | 51.2 | 43.3 | 34.0 | 21.4 | 5.1 | 28.0 |
| Highest Mean Min. Temperature (F) | 9.4 | 15.0 | 25.9 | 31.5 | 47.2 | 52.7 | 57.5 | 56.5 | 49.1 | 44.4 | 26.5 | 16.6 | 31.1 |
| Year Highest Occurred | 1966 | 1983 | 1973 | 1968 | 1962 | 1971 | 1983 | 1988 | 1968 | 1971 | 1988 | 1965 | 1968 |
| Lowest Mean Min. Temperature (F) | -15.8 | -9.3 | 5.0 | 19.5 | 33.6 | 41.3 | 44.9 | 45.7 | 36.0 | 25.0 | 10.9 | -9.6 | 23.8 |
| Year Lowest Occurred | 1977 | 1989 | 1984 | 1982 | 1984 | 1982 | 1985 | 1985 | 1976 | 1976 | 1976 | 1985 | 1985 |
| Mean Precipitation (in.) | 1.01 | 0.82 | 1.59 | 2.27 | 3.22 | 3.82 | 3.52 | 4.28 | 4.11 | 2.51 | 1.85 | 1.28 | 30.28 |
| Highest Precipitation (in.) | 2.64 | 2.76 | 3.56 | 4.72 | 7.32 | 11.05 | 6.88 | 8.76 | 9.91 | 4.65 | 4.66 | 3.02 | 43.45 |
| Year Highest Occurred | 1967 | 1971 | 1977 | 1977 | 1973 | 1981 | 1978 | 1966 | 1985 | 1979 | 1975 | 1968 | 1985 |
| Lowest Precipitation (in.) | 0.14 | 0.02 | 0.22 | 0.82 | 0.56 | 1.53 | 1.21 | 0.38 | 0.51 | 0.36 | 0.15 | 0.31 | 14.58 |
| Year Lowest Occurred | 1961 | 1987 | 1978 | 1971 | 1986 | 1976 | 1989 | 1970 | 1976 | 1976 | 1981 | 1986 | 1976 |
| Heating Degree Days (F) | 1755. | 1473. | 1252. | 756. | 403. | 145. | 53. | 110. | 314. | 645. | 1062. | 1575. | 9543. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 16. | 37. | 94. | 60. | 0. | 0. | 0. | 0. | 207. |