| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 48.7 | 53.9 | 59.0 | 65.9 | 74.4 | 82.9 | 91.3 | 90.5 | 84.8 | 73.2 | 55.8 | 47.4 | 69.0 |
| Highest Mean Max. Temperature (F) | 52.9 | 61.6 | 66.3 | 76.5 | 80.4 | 88.6 | 95.5 | 97.6 | 95.6 | 83.3 | 64.4 | 53.2 | 71.7 |
| Year Highest Occurred | 1981 | 1988 | 1986 | 1987 | 1966 | 1987 | 1988 | 1967 | 1974 | 1988 | 1976 | 1989 | 1988 |
| Lowest Mean Max. Temperature (F) | 41.8 | 47.1 | 51.2 | 51.1 | 62.4 | 75.0 | 82.5 | 80.5 | 75.0 | 64.0 | 48.2 | 41.3 | 66.4 |
| Year Lowest Occurred | 1969 | 1969 | 1975 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1973 | 1971 | 1983 |
| Mean Temperature (F) | 38.0 | 41.6 | 45.5 | 50.4 | 57.1 | 65.0 | 71.4 | 70.6 | 65.0 | 56.0 | 43.9 | 37.8 | 53.5 |
| Highest Mean Temperature (F) | 42.6 | 47.1 | 51.1 | 56.5 | 61.0 | 70.7 | 75.0 | 77.0 | 72.2 | 62.6 | 49.9 | 41.5 | 55.2 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1987 | 1973 | 1977 | 1967 | 1967 | 1974 | 1988 | 1976 | 1981 | 1981 |
| Lowest Mean Temperature (F) | 33.3 | 36.6 | 41.7 | 42.0 | 50.8 | 59.7 | 63.5 | 66.0 | 58.4 | 50.7 | 39.3 | 31.9 | 51.9 |
| Year Lowest Occurred | 1969 | 1989 | 1975 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1985 | 1990 | 1982 |
| Mean Min. Temperature (F) | 27.2 | 29.2 | 32.1 | 34.7 | 39.8 | 47.0 | 51.4 | 50.7 | 45.1 | 38.7 | 32.0 | 28.1 | 38.0 |
| Highest Mean Min. Temperature (F) | 33.3 | 35.3 | 36.7 | 39.1 | 43.6 | 53.5 | 55.8 | 56.4 | 50.7 | 44.3 | 36.4 | 33.9 | 40.1 |
| Year Highest Occurred | 1986 | 1963 | 1983 | 1988 | 1963 | 1977 | 1967 | 1967 | 1967 | 1979 | 1973 | 1981 | 1981 |
| Lowest Mean Min. Temperature (F) | 22.4 | 22.6 | 28.7 | 28.9 | 35.2 | 42.8 | 44.4 | 43.9 | 38.0 | 34.9 | 27.1 | 20.6 | 36.1 |
| Year Lowest Occurred | 1963 | 1989 | 1969 | 1970 | 1984 | 1976 | 1987 | 1984 | 1984 | 1971 | 1985 | 1990 | 1984 |
| Mean Precipitation (in.) | 6.74 | 5.34 | 4.88 | 2.30 | 1.28 | 0.75 | 0.20 | 0.77 | 1.05 | 3.26 | 7.06 | 7.67 | 41.30 |
| Highest Precipitation (in.) | 19.49 | 11.76 | 14.87 | 9.71 | 6.03 | 3.08 | 1.22 | 5.99 | 4.92 | 10.39 | 18.66 | 25.84 | 69.46 |
| Year Highest Occurred | 1970 | 1983 | 1975 | 1963 | 1990 | 1982 | 1990 | 1983 | 1986 | 1962 | 1970 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.39 | 0.27 | 0.43 | 0.28 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.26 | 0.33 | 20.95 |
| Year Lowest Occurred | 1985 | 1965 | 1988 | 1968 | 1982 | 1962 | 1989 | 1986 | 1987 | 1978 | 1990 | 1976 | 1988 |
| Heating Degree Days (F) | 837. | 655. | 605. | 447. | 255. | 83. | 21. | 19. | 100. | 293. | 633. | 843. | 4791. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 9. | 10. | 83. | 219. | 193. | 100. | 14. | 0. | 0. | 628. |