| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 47.2 | 49.9 | 53.2 | 60.4 | 70.3 | 79.1 | 87.0 | 86.3 | 79.7 | 68.9 | 53.3 | 46.9 | 65.2 |
| Highest Mean Max. Temperature (F) | 54.3 | 59.7 | 62.0 | 71.5 | 76.7 | 84.8 | 93.3 | 92.3 | 88.1 | 80.7 | 64.9 | 57.0 | 68.4 |
| Year Highest Occurred | 1984 | 1988 | 1986 | 1987 | 1987 | 1977 | 1988 | 1986 | 1974 | 1988 | 1976 | 1989 | 1988 |
| Lowest Mean Max. Temperature (F) | 41.1 | 41.7 | 45.7 | 45.7 | 59.4 | 70.8 | 80.6 | 77.2 | 70.8 | 60.4 | 43.0 | 39.1 | 62.3 |
| Year Lowest Occurred | 1969 | 1969 | 1975 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1973 | 1972 | 1982 |
| Mean Temperature (F) | 35.2 | 37.9 | 40.4 | 45.7 | 53.7 | 61.7 | 67.4 | 66.3 | 60.1 | 51.5 | 40.9 | 35.5 | 49.7 |
| Highest Mean Temperature (F) | 41.1 | 44.1 | 47.3 | 53.5 | 59.0 | 67.4 | 73.3 | 70.5 | 65.7 | 59.4 | 48.1 | 40.9 | 51.8 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1990 | 1987 | 1977 | 1988 | 1988 | 1975 | 1988 | 1976 | 1980 | 1986 |
| Lowest Mean Temperature (F) | 30.8 | 32.6 | 35.9 | 36.4 | 47.1 | 56.6 | 62.3 | 61.9 | 54.9 | 46.1 | 34.9 | 28.7 | 47.7 |
| Year Lowest Occurred | 1973 | 1969 | 1975 | 1967 | 1977 | 1980 | 1963 | 1976 | 1986 | 1984 | 1985 | 1972 | 1971 |
| Mean Min. Temperature (F) | 23.2 | 25.7 | 27.5 | 31.0 | 37.0 | 44.2 | 47.6 | 46.3 | 40.4 | 34.1 | 28.5 | 24.0 | 34.1 |
| Highest Mean Min. Temperature (F) | 30.5 | 33.2 | 32.8 | 37.9 | 41.7 | 50.0 | 53.2 | 50.0 | 44.8 | 38.7 | 32.8 | 29.6 | 36.5 |
| Year Highest Occurred | 1978 | 1963 | 1978 | 1990 | 1963 | 1977 | 1988 | 1977 | 1975 | 1979 | 1970 | 1981 | 1981 |
| Lowest Mean Min. Temperature (F) | 18.5 | 19.4 | 23.6 | 24.9 | 33.4 | 40.2 | 42.2 | 42.3 | 36.0 | 29.5 | 23.1 | 14.6 | 32.3 |
| Year Lowest Occurred | 1989 | 1990 | 1964 | 1975 | 1965 | 1962 | 1966 | 1970 | 1961 | 1971 | 1961 | 1990 | 1971 |
| Mean Precipitation (in.) | 8.49 | 7.07 | 7.13 | 3.33 | 1.95 | 0.77 | 0.23 | 0.48 | 1.10 | 3.28 | 7.57 | 7.83 | 49.23 |
| Highest Precipitation (in.) | 23.79 | 19.48 | 22.97 | 11.12 | 10.72 | 3.34 | 1.39 | 3.42 | 4.81 | 12.57 | 18.68 | 18.73 | 95.29 |
| Year Highest Occurred | 1978 | 1986 | 1983 | 1965 | 1990 | 1982 | 1974 | 1976 | 1986 | 1962 | 1984 | 1969 | 1983 |
| Lowest Precipitation (in.) | 0.28 | 0.10 | 0.38 | 0.18 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 0.03 | 20.56 |
| Year Lowest Occurred | 1984 | 1988 | 1965 | 1985 | 1974 | 1979 | 1988 | 1988 | 1988 | 1978 | 1980 | 1989 | 1976 |
| Heating Degree Days (F) | 924. | 759. | 763. | 579. | 356. | 142. | 50. | 58. | 183. | 423. | 723. | 915. | 5875. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 43. | 124. | 98. | 36. | 0. | 0. | 0. | 307. |