| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 30.4 | 31.8 | 41.0 | 52.8 | 65.1 | 74.2 | 79.7 | 77.9 | 70.8 | 59.5 | 47.4 | 35.1 | 55.5 |
| Highest Mean Max. Temperature (F) | 40.1 | 40.1 | 49.0 | 59.1 | 70.7 | 78.2 | 83.5 | 82.1 | 78.2 | 66.8 | 53.1 | 44.0 | 58.3 |
| Year Highest Occurred | 1967 | 1981 | 1973 | 1987 | 1987 | 1987 | 1988 | 1988 | 1961 | 1963 | 1975 | 1982 | 1990 |
| Lowest Mean Max. Temperature (F) | 22.3 | 21.3 | 34.1 | 45.8 | 56.8 | 69.3 | 75.8 | 74.4 | 65.8 | 53.4 | 40.8 | 23.7 | 53.4 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1965 | 1967 | 1968 | 1976 | 1963 | 1975 | 1976 | 1976 | 1989 | 1972 |
| Mean Temperature (F) | 23.5 | 24.7 | 33.9 | 44.7 | 55.5 | 64.7 | 70.8 | 69.4 | 62.5 | 51.9 | 41.4 | 29.1 | 47.7 |
| Highest Mean Temperature (F) | 33.9 | 32.7 | 41.4 | 50.1 | 60.6 | 69.4 | 73.7 | 72.8 | 70.7 | 57.8 | 46.7 | 36.0 | 49.9 |
| Year Highest Occurred | 1967 | 1984 | 1973 | 1987 | 1975 | 1967 | 1987 | 1973 | 1961 | 1968 | 1975 | 1982 | 1990 |
| Lowest Mean Temperature (F) | 15.7 | 14.4 | 26.9 | 39.1 | 50.3 | 60.8 | 67.9 | 66.0 | 57.5 | 46.6 | 35.8 | 16.2 | 45.7 |
| Year Lowest Occurred | 1970 | 1979 | 1984 | 1975 | 1967 | 1980 | 1976 | 1963 | 1963 | 1972 | 1976 | 1989 | 1978 |
| Mean Min. Temperature (F) | 16.6 | 17.7 | 26.7 | 36.5 | 46.0 | 55.2 | 61.8 | 60.8 | 54.1 | 44.2 | 35.3 | 23.0 | 39.8 |
| Highest Mean Min. Temperature (F) | 27.7 | 25.7 | 33.8 | 41.1 | 50.6 | 60.9 | 65.2 | 64.4 | 63.1 | 51.3 | 40.3 | 29.5 | 42.6 |
| Year Highest Occurred | 1967 | 1984 | 1973 | 1987 | 1962 | 1967 | 1964 | 1973 | 1961 | 1968 | 1975 | 1965 | 1961 |
| Lowest Mean Min. Temperature (F) | 7.5 | 7.4 | 19.6 | 31.2 | 42.8 | 50.2 | 58.9 | 57.4 | 47.2 | 38.7 | 30.8 | 8.6 | 37.9 |
| Year Lowest Occurred | 1970 | 1979 | 1984 | 1972 | 1969 | 1980 | 1965 | 1982 | 1963 | 1972 | 1976 | 1989 | 1978 |
| Mean Precipitation (in.) | 3.41 | 3.09 | 2.95 | 3.33 | 3.24 | 3.43 | 2.58 | 3.42 | 3.96 | 3.60 | 4.47 | 3.94 | 41.42 |
| Highest Precipitation (in.) | 8.43 | 5.82 | 4.81 | 5.74 | 6.12 | 6.78 | 6.75 | 5.55 | 7.55 | 6.99 | 9.03 | 6.26 | 50.35 |
| Year Highest Occurred | 1978 | 1965 | 1976 | 1973 | 1990 | 1976 | 1974 | 1979 | 1975 | 1988 | 1963 | 1990 | 1976 |
| Lowest Precipitation (in.) | 1.47 | 0.67 | 1.13 | 1.43 | 0.92 | 0.91 | 0.81 | 1.63 | 1.34 | 0.14 | 1.68 | 2.27 | 31.74 |
| Year Lowest Occurred | 1963 | 1987 | 1981 | 1975 | 1977 | 1963 | 1964 | 1980 | 1964 | 1963 | 1978 | 1961 | 1964 |
| Heating Degree Days (F) | 1287. | 1128. | 964. | 609. | 303. | 76. | 0. | 11. | 122. | 412. | 708. | 1113. | 6733. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 9. | 67. | 182. | 147. | 47. | 5. | 0. | 0. | 457. |