| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 45.1 | 48.4 | 58.5 | 68.9 | 76.3 | 83.6 | 86.9 | 86.0 | 79.9 | 70.2 | 60.5 | 49.1 | 67.8 |
| Highest Mean Max. Temperature (F) | 55.2 | 59.2 | 65.4 | 74.9 | 82.5 | 88.5 | 92.8 | 92.0 | 86.3 | 76.1 | 68.3 | 59.0 | 70.7 |
| Year Highest Occurred | 1990 | 1976 | 1976 | 1985 | 1965 | 1986 | 1987 | 1983 | 1970 | 1963 | 1990 | 1984 | 1990 |
| Lowest Mean Max. Temperature (F) | 34.8 | 37.8 | 52.6 | 62.6 | 70.5 | 78.6 | 82.0 | 82.0 | 76.2 | 63.2 | 53.2 | 39.0 | 66.2 |
| Year Lowest Occurred | 1977 | 1979 | 1970 | 1961 | 1967 | 1974 | 1984 | 1985 | 1989 | 1976 | 1967 | 1989 | 1962 |
| Mean Temperature (F) | 34.3 | 36.9 | 45.6 | 55.1 | 63.3 | 71.4 | 75.5 | 74.4 | 68.0 | 56.9 | 48.0 | 38.2 | 55.6 |
| Highest Mean Temperature (F) | 44.2 | 45.7 | 51.0 | 60.4 | 68.9 | 74.8 | 79.9 | 78.7 | 73.0 | 63.7 | 54.4 | 48.0 | 58.1 |
| Year Highest Occurred | 1974 | 1976 | 1973 | 1985 | 1965 | 1987 | 1987 | 1988 | 1980 | 1984 | 1985 | 1971 | 1990 |
| Lowest Mean Temperature (F) | 24.4 | 27.8 | 40.4 | 50.6 | 57.7 | 67.6 | 72.2 | 72.2 | 63.1 | 51.7 | 41.0 | 28.0 | 53.9 |
| Year Lowest Occurred | 1977 | 1979 | 1969 | 1961 | 1967 | 1974 | 1962 | 1982 | 1967 | 1976 | 1967 | 1989 | 1967 |
| Mean Min. Temperature (F) | 23.4 | 25.3 | 32.6 | 41.3 | 50.2 | 59.2 | 64.0 | 62.8 | 55.9 | 43.6 | 35.5 | 27.3 | 43.4 |
| Highest Mean Min. Temperature (F) | 35.1 | 32.3 | 41.4 | 45.9 | 55.2 | 64.0 | 67.0 | 66.7 | 60.7 | 54.7 | 44.2 | 39.0 | 45.5 |
| Year Highest Occurred | 1974 | 1984 | 1973 | 1985 | 1965 | 1989 | 1987 | 1988 | 1971 | 1971 | 1985 | 1971 | 1973 |
| Lowest Mean Min. Temperature (F) | 13.9 | 17.8 | 26.8 | 37.0 | 44.8 | 56.6 | 61.1 | 60.1 | 49.3 | 36.4 | 28.8 | 17.0 | 41.0 |
| Year Lowest Occurred | 1977 | 1979 | 1969 | 1975 | 1967 | 1974 | 1962 | 1976 | 1967 | 1987 | 1967 | 1989 | 1967 |
| Mean Precipitation (in.) | 3.22 | 3.24 | 3.94 | 3.31 | 4.55 | 3.17 | 4.57 | 3.62 | 3.69 | 4.40 | 3.44 | 3.20 | 44.35 |
| Highest Precipitation (in.) | 8.75 | 5.92 | 8.37 | 8.84 | 9.69 | 10.96 | 12.89 | 11.96 | 15.35 | 12.58 | 8.04 | 7.11 | 64.00 |
| Year Highest Occurred | 1978 | 1971 | 1975 | 1987 | 1990 | 1972 | 1989 | 1985 | 1987 | 1976 | 1985 | 1973 | 1979 |
| Lowest Precipitation (in.) | 0.25 | 0.37 | 1.19 | 1.15 | 1.45 | 0.59 | 0.68 | 0.29 | 0.05 | 0.25 | 0.68 | 0.46 | 28.47 |
| Year Lowest Occurred | 1981 | 1968 | 1985 | 1967 | 1977 | 1964 | 1977 | 1980 | 1985 | 1963 | 1981 | 1965 | 1963 |
| Heating Degree Days (F) | 952. | 787. | 601. | 301. | 114. | 7. | 0. | 0. | 37. | 271. | 510. | 831. | 4411. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 61. | 199. | 326. | 291. | 127. | 19. | 0. | 0. | 1023. |