| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 43.8 | 44.0 | 43.9 | 48.7 | 56.7 | 67.0 | 74.9 | 73.9 | 67.8 | 59.2 | 49.0 | 44.2 | 56.1 |
| Highest Mean Max. Temperature (F) | 51.2 | 49.8 | 52.7 | 58.2 | 64.4 | 72.8 | 78.5 | 78.4 | 74.5 | 67.5 | 56.3 | 52.1 | 57.8 |
| Year Highest Occurred | 1986 | 1988 | 1972 | 1989 | 1984 | 1981 | 1961 | 1981 | 1974 | 1988 | 1976 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 36.6 | 36.9 | 38.2 | 36.2 | 45.5 | 60.7 | 70.0 | 66.0 | 58.8 | 50.3 | 43.4 | 34.7 | 53.5 |
| Year Lowest Occurred | 1979 | 1969 | 1973 | 1967 | 1977 | 1963 | 1987 | 1976 | 1986 | 1984 | 1964 | 1971 | 1982 |
| Mean Temperature (F) | 35.0 | 35.1 | 35.0 | 39.3 | 46.8 | 56.2 | 63.2 | 62.4 | 56.8 | 49.2 | 40.2 | 35.6 | 46.2 |
| Highest Mean Temperature (F) | 42.9 | 41.0 | 43.2 | 48.2 | 54.1 | 61.5 | 66.6 | 66.4 | 62.9 | 57.3 | 46.5 | 43.0 | 48.0 |
| Year Highest Occurred | 1986 | 1963 | 1972 | 1989 | 1984 | 1981 | 1988 | 1967 | 1974 | 1988 | 1976 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 28.9 | 28.4 | 28.7 | 28.1 | 37.2 | 50.8 | 58.0 | 55.0 | 48.5 | 41.8 | 35.3 | 26.9 | 44.1 |
| Year Lowest Occurred | 1979 | 1969 | 1962 | 1967 | 1977 | 1963 | 1987 | 1976 | 1986 | 1984 | 1984 | 1971 | 1982 |
| Mean Min. Temperature (F) | 26.1 | 26.1 | 26.1 | 29.9 | 36.8 | 45.3 | 51.4 | 50.7 | 45.8 | 39.2 | 31.4 | 26.8 | 36.3 |
| Highest Mean Min. Temperature (F) | 34.5 | 33.0 | 33.6 | 38.2 | 43.7 | 50.1 | 55.1 | 54.5 | 51.2 | 47.0 | 36.7 | 33.9 | 38.1 |
| Year Highest Occurred | 1986 | 1963 | 1972 | 1989 | 1984 | 1981 | 1984 | 1971 | 1974 | 1988 | 1976 | 1989 | 1988 |
| Lowest Mean Min. Temperature (F) | 20.7 | 19.8 | 17.9 | 20.0 | 28.9 | 40.6 | 46.0 | 44.0 | 38.2 | 33.3 | 27.0 | 19.0 | 33.8 |
| Year Lowest Occurred | 1973 | 1969 | 1962 | 1967 | 1977 | 1965 | 1987 | 1976 | 1986 | 1984 | 1984 | 1971 | 1964 |
| Mean Precipitation (in.) | 8.05 | 6.64 | 6.69 | 3.72 | 1.20 | 0.37 | 0.12 | 0.15 | 1.30 | 1.87 | 5.18 | 6.18 | 41.47 |
| Highest Precipitation (in.) | 38.18 | 23.61 | 14.82 | 14.91 | 3.71 | 2.16 | 0.82 | 0.74 | 7.98 | 6.36 | 13.99 | 23.33 | 83.23 |
| Year Highest Occurred | 1969 | 1962 | 1982 | 1967 | 1977 | 1969 | 1984 | 1983 | 1982 | 1982 | 1965 | 1966 | 1982 |
| Lowest Precipitation (in.) | 0.06 | 0.28 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.16 | 0.00 | 21.10 |
| Year Lowest Occurred | 1976 | 1964 | 1972 | 1977 | 1970 | 1986 | 1989 | 1989 | 1987 | 1988 | 1962 | 1989 | 1976 |
| Heating Degree Days (F) | 930. | 837. | 930. | 771. | 564. | 277. | 108. | 131. | 266. | 498. | 744. | 911. | 6967. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 13. | 52. | 51. | 20. | 8. | 0. | 0. | 144. |