| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 36.4 | 36.4 | 43.9 | 52.4 | 62.7 | 72.4 | 79.1 | 77.5 | 70.3 | 60.8 | 50.5 | 41.4 | 57.0 |
| Highest Mean Max. Temperature (F) | 41.8 | 43.3 | 48.2 | 58.5 | 67.5 | 76.0 | 82.7 | 80.9 | 74.7 | 65.2 | 55.1 | 47.8 | 58.6 |
| Year Highest Occurred | 1990 | 1984 | 1977 | 1976 | 1977 | 1976 | 1968 | 1969 | 1961 | 1971 | 1982 | 1990 | 1973 |
| Lowest Mean Max. Temperature (F) | 29.0 | 27.6 | 38.3 | 47.7 | 56.8 | 65.5 | 74.1 | 73.4 | 65.7 | 56.8 | 45.6 | 29.4 | 55.1 |
| Year Lowest Occurred | 1981 | 1979 | 1967 | 1972 | 1967 | 1982 | 1990 | 1982 | 1963 | 1988 | 1967 | 1989 | 1967 |
| Mean Temperature (F) | 29.4 | 29.4 | 36.6 | 44.8 | 54.6 | 64.0 | 70.7 | 69.5 | 62.6 | 53.2 | 43.8 | 34.6 | 49.4 |
| Highest Mean Temperature (F) | 36.0 | 38.7 | 40.7 | 49.1 | 57.8 | 66.9 | 74.0 | 73.4 | 68.1 | 56.6 | 49.5 | 41.7 | 52.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1976 | 1979 | 1981 | 1983 | 1988 | 1983 | 1983 | 1982 | 1982 | 1983 |
| Lowest Mean Temperature (F) | 22.3 | 21.2 | 32.2 | 39.9 | 48.7 | 60.3 | 67.7 | 65.2 | 59.6 | 49.4 | 39.1 | 22.5 | 47.7 |
| Year Lowest Occurred | 1970 | 1979 | 1967 | 1972 | 1967 | 1982 | 1962 | 1964 | 1963 | 1974 | 1976 | 1989 | 1967 |
| Mean Min. Temperature (F) | 22.4 | 22.2 | 29.3 | 37.1 | 46.5 | 55.6 | 62.2 | 61.5 | 54.8 | 45.5 | 37.1 | 27.8 | 41.8 |
| Highest Mean Min. Temperature (F) | 30.2 | 34.1 | 35.5 | 41.7 | 51.5 | 59.9 | 66.9 | 67.0 | 61.8 | 51.9 | 43.8 | 36.6 | 47.0 |
| Year Highest Occurred | 1990 | 1984 | 1983 | 1983 | 1979 | 1984 | 1985 | 1985 | 1983 | 1983 | 1982 | 1982 | 1983 |
| Lowest Mean Min. Temperature (F) | 13.9 | 14.5 | 25.4 | 32.0 | 40.5 | 53.0 | 57.6 | 56.2 | 49.5 | 39.9 | 31.5 | 15.5 | 39.2 |
| Year Lowest Occurred | 1977 | 1987 | 1987 | 1972 | 1967 | 1967 | 1962 | 1987 | 1978 | 1974 | 1976 | 1989 | 1978 |
| Mean Precipitation (in.) | 3.85 | 3.60 | 3.81 | 3.62 | 3.39 | 3.16 | 2.64 | 3.36 | 3.37 | 3.83 | 4.60 | 4.09 | 43.32 |
| Highest Precipitation (in.) | 12.89 | 9.15 | 9.94 | 9.43 | 8.10 | 7.62 | 6.69 | 7.34 | 9.63 | 9.05 | 9.40 | 8.90 | 57.52 |
| Year Highest Occurred | 1979 | 1969 | 1983 | 1987 | 1967 | 1984 | 1986 | 1985 | 1972 | 1962 | 1969 | 1969 | 1972 |
| Lowest Precipitation (in.) | 1.37 | 0.79 | 0.82 | 0.89 | 0.58 | 0.50 | 0.68 | 0.32 | 0.95 | 1.27 | 1.08 | 1.11 | 22.93 |
| Year Lowest Occurred | 1970 | 1968 | 1962 | 1963 | 1964 | 1971 | 1968 | 1984 | 1986 | 1967 | 1984 | 1988 | 1965 |
| Heating Degree Days (F) | 1104. | 997. | 880. | 606. | 322. | 67. | 5. | 14. | 105. | 366. | 636. | 942. | 6044. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 37. | 182. | 154. | 33. | 0. | 0. | 0. | 406. |