| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.8 | 27.4 | 39.6 | 56.4 | 69.4 | 77.4 | 82.1 | 79.0 | 69.2 | 58.1 | 39.8 | 24.6 | 53.7 |
| Highest Mean Max. Temperature (F) | 32.9 | 39.1 | 50.2 | 66.5 | 79.3 | 84.2 | 88.9 | 84.8 | 74.7 | 68.4 | 46.4 | 31.5 | 58.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1969 | 1978 | 1963 | 1990 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | 11.4 | 20.0 | 29.5 | 48.1 | 63.1 | 69.7 | 77.2 | 73.9 | 60.1 | 51.6 | 31.7 | 14.4 | 50.4 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1974 | 1969 | 1962 | 1985 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 9.6 | 15.4 | 28.6 | 43.9 | 55.9 | 64.4 | 69.5 | 66.6 | 57.6 | 46.9 | 31.3 | 15.4 | 42.1 |
| Highest Mean Temperature (F) | 23.4 | 28.4 | 37.8 | 51.1 | 64.7 | 69.3 | 74.1 | 70.8 | 62.5 | 56.1 | 37.0 | 24.2 | 47.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1988 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -0.1 | 7.9 | 18.2 | 37.0 | 49.9 | 57.8 | 64.9 | 62.5 | 51.2 | 40.8 | 24.1 | 3.6 | 39.1 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1967 | 1969 | 1962 | 1977 | 1965 | 1976 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -1.6 | 3.3 | 17.5 | 31.4 | 42.4 | 51.5 | 56.8 | 54.1 | 45.9 | 35.7 | 22.7 | 6.1 | 30.5 |
| Highest Mean Min. Temperature (F) | 13.9 | 17.7 | 28.4 | 37.0 | 50.1 | 55.6 | 61.7 | 59.3 | 50.2 | 43.8 | 27.6 | 17.3 | 36.1 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1986 | 1977 | 1984 | 1987 | 1988 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -13.6 | -6.1 | 6.8 | 25.9 | 36.4 | 45.6 | 52.5 | 49.0 | 38.2 | 27.8 | 13.4 | -7.2 | 27.7 |
| Year Lowest Occurred | 1982 | 1978 | 1965 | 1975 | 1967 | 1982 | 1962 | 1977 | 1974 | 1976 | 1976 | 1983 | 1972 |
| Mean Precipitation (in.) | 0.76 | 0.65 | 1.39 | 2.16 | 3.16 | 3.85 | 3.76 | 4.27 | 3.82 | 2.53 | 1.49 | 0.96 | 28.80 |
| Highest Precipitation (in.) | 2.21 | 2.68 | 2.84 | 5.30 | 6.86 | 10.69 | 9.59 | 8.79 | 8.10 | 5.81 | 3.89 | 2.48 | 40.82 |
| Year Highest Occurred | 1969 | 1981 | 1961 | 1964 | 1965 | 1967 | 1986 | 1973 | 1980 | 1970 | 1975 | 1968 | 1968 |
| Lowest Precipitation (in.) | 0.05 | 0.04 | 0.20 | 0.30 | 0.49 | 1.27 | 0.86 | 1.10 | 0.68 | 0.56 | 0.17 | 0.13 | 15.08 |
| Year Lowest Occurred | 1981 | 1969 | 1969 | 1987 | 1976 | 1987 | 1975 | 1968 | 1979 | 1976 | 1967 | 1974 | 1976 |
| Heating Degree Days (F) | 1717. | 1389. | 1128. | 633. | 310. | 92. | 23. | 53. | 231. | 561. | 1011. | 1538. | 8686. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 28. | 74. | 162. | 103. | 9. | 0. | 0. | 0. | 376. |