| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 45.8 | 50.1 | 53.1 | 57.4 | 64.3 | 70.8 | 76.7 | 76.7 | 72.3 | 63.3 | 51.6 | 45.6 | 60.6 |
| Highest Mean Max. Temperature (F) | 50.8 | 58.0 | 61.2 | 63.8 | 69.8 | 79.7 | 83.8 | 86.8 | 81.5 | 71.5 | 58.1 | 50.7 | 62.8 |
| Year Highest Occurred | 1977 | 1968 | 1965 | 1989 | 1969 | 1961 | 1985 | 1967 | 1974 | 1987 | 1976 | 1980 | 1987 |
| Lowest Mean Max. Temperature (F) | 38.4 | 43.3 | 47.1 | 51.5 | 57.6 | 64.0 | 69.3 | 71.4 | 66.3 | 55.9 | 41.1 | 38.9 | 58.5 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1972 | 1977 | 1971 | 1983 | 1989 | 1977 | 1984 | 1985 | 1990 | 1971 |
| Mean Temperature (F) | 38.8 | 41.7 | 43.6 | 46.7 | 52.1 | 57.7 | 61.9 | 62.3 | 58.5 | 51.6 | 43.9 | 39.0 | 49.8 |
| Highest Mean Temperature (F) | 42.6 | 48.1 | 48.3 | 51.9 | 56.0 | 62.8 | 65.5 | 67.5 | 63.2 | 56.0 | 47.1 | 43.5 | 51.2 |
| Year Highest Occurred | 1961 | 1963 | 1986 | 1989 | 1969 | 1961 | 1985 | 1967 | 1974 | 1988 | 1976 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 32.6 | 34.4 | 38.9 | 42.5 | 48.1 | 53.5 | 58.3 | 58.7 | 54.6 | 48.0 | 34.9 | 32.1 | 48.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1977 | 1971 | 1963 | 1973 | 1970 | 1984 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 31.7 | 33.2 | 33.9 | 35.9 | 39.8 | 44.5 | 47.2 | 47.7 | 44.5 | 39.8 | 36.1 | 32.4 | 38.9 |
| Highest Mean Min. Temperature (F) | 36.5 | 39.6 | 38.2 | 39.9 | 42.6 | 49.7 | 50.3 | 52.4 | 47.7 | 44.5 | 39.8 | 37.4 | 40.3 |
| Year Highest Occurred | 1978 | 1963 | 1986 | 1989 | 1987 | 1969 | 1983 | 1977 | 1990 | 1988 | 1965 | 1979 | 1986 |
| Lowest Mean Min. Temperature (F) | 24.6 | 25.4 | 30.5 | 32.0 | 37.2 | 38.2 | 44.7 | 43.7 | 40.7 | 36.4 | 28.7 | 25.2 | 36.6 |
| Year Lowest Occurred | 1979 | 1989 | 1969 | 1967 | 1965 | 1965 | 1962 | 1973 | 1970 | 1974 | 1985 | 1990 | 1985 |
| Mean Precipitation (in.) | 19.28 | 15.30 | 13.80 | 7.72 | 4.77 | 3.19 | 1.23 | 1.96 | 4.09 | 8.47 | 18.31 | 20.91 | 119.03 |
| Highest Precipitation (in.) | 37.93 | 34.19 | 26.51 | 13.99 | 11.10 | 9.75 | 5.16 | 8.78 | 9.55 | 21.20 | 38.31 | 40.25 | 164.22 |
| Year Highest Occurred | 1970 | 1961 | 1983 | 1982 | 1984 | 1981 | 1974 | 1968 | 1978 | 1967 | 1973 | 1964 | 1971 |
| Lowest Precipitation (in.) | 1.25 | 3.77 | 2.47 | 2.25 | 1.33 | 0.26 | 0.00 | 0.00 | 0.02 | 0.21 | 4.43 | 4.74 | 56.72 |
| Year Lowest Occurred | 1985 | 1988 | 1965 | 1987 | 1982 | 1987 | 1973 | 1970 | 1975 | 1987 | 1976 | 1990 | 1989 |
| Heating Degree Days (F) | 812. | 652. | 663. | 549. | 400. | 227. | 116. | 118. | 205. | 415. | 633. | 806. | 5596. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 8. | 20. | 34. | 10. | 0. | 0. | 0. | 72. |