| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 45.2 | 45.7 | 45.4 | 49.8 | 56.8 | 66.2 | 73.8 | 73.1 | 67.1 | 58.9 | 49.4 | 44.3 | 56.3 |
| Highest Mean Max. Temperature (F) | 52.2 | 55.2 | 53.5 | 61.9 | 63.9 | 72.8 | 79.5 | 77.4 | 73.6 | 70.4 | 55.4 | 55.9 | 61.8 |
| Year Highest Occurred | 1986 | 1988 | 1988 | 1989 | 1984 | 1985 | 1988 | 1981 | 1988 | 1988 | 1976 | 1989 | 1988 |
| Lowest Mean Max. Temperature (F) | 38.3 | 36.3 | 36.1 | 36.4 | 46.3 | 60.2 | 68.4 | 65.7 | 57.0 | 51.6 | 42.2 | 33.5 | 53.1 |
| Year Lowest Occurred | 1973 | 1969 | 1973 | 1967 | 1977 | 1971 | 1983 | 1976 | 1986 | 1972 | 1964 | 1971 | 1983 |
| Mean Temperature (F) | 34.7 | 34.9 | 34.8 | 38.7 | 45.3 | 53.6 | 60.5 | 60.1 | 54.7 | 47.5 | 39.2 | 34.6 | 44.9 |
| Highest Mean Temperature (F) | 42.5 | 42.7 | 41.9 | 50.7 | 51.9 | 59.1 | 65.8 | 64.2 | 59.9 | 56.6 | 44.8 | 44.8 | 49.8 |
| Year Highest Occurred | 1986 | 1988 | 1989 | 1989 | 1984 | 1961 | 1988 | 1988 | 1988 | 1988 | 1976 | 1989 | 1988 |
| Lowest Mean Temperature (F) | 27.1 | 25.8 | 26.9 | 25.8 | 37.7 | 47.9 | 54.7 | 54.1 | 46.9 | 42.1 | 32.2 | 25.6 | 41.4 |
| Year Lowest Occurred | 1966 | 1966 | 1973 | 1967 | 1977 | 1967 | 1983 | 1976 | 1986 | 1972 | 1964 | 1971 | 1965 |
| Mean Min. Temperature (F) | 24.2 | 24.1 | 24.1 | 27.5 | 33.8 | 40.9 | 47.1 | 47.1 | 42.3 | 36.1 | 29.1 | 24.8 | 33.4 |
| Highest Mean Min. Temperature (F) | 32.7 | 30.1 | 32.3 | 39.5 | 39.8 | 46.3 | 52.0 | 51.6 | 47.3 | 42.8 | 34.1 | 33.6 | 37.9 |
| Year Highest Occurred | 1986 | 1988 | 1989 | 1989 | 1984 | 1961 | 1990 | 1971 | 1984 | 1988 | 1976 | 1989 | 1989 |
| Lowest Mean Min. Temperature (F) | 14.8 | 13.9 | 16.7 | 15.1 | 29.0 | 34.1 | 40.9 | 42.4 | 34.6 | 30.7 | 22.2 | 17.6 | 29.7 |
| Year Lowest Occurred | 1966 | 1966 | 1962 | 1967 | 1977 | 1983 | 1983 | 1976 | 1965 | 1969 | 1964 | 1971 | 1965 |
| Mean Precipitation (in.) | 6.50 | 6.29 | 5.95 | 3.31 | 1.25 | 0.37 | 0.21 | 0.25 | 1.09 | 1.89 | 4.61 | 5.21 | 36.93 |
| Highest Precipitation (in.) | 19.65 | 20.60 | 15.90 | 12.07 | 4.30 | 1.60 | 2.60 | 1.80 | 5.80 | 8.10 | 11.90 | 14.30 | 82.90 |
| Year Highest Occurred | 1969 | 1986 | 1983 | 1967 | 1977 | 1982 | 1984 | 1983 | 1982 | 1975 | 1983 | 1977 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.02 | 0.00 | 0.30 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 0.00 | 15.33 |
| Year Lowest Occurred | 1984 | 1964 | 1972 | 1977 | 1970 | 1990 | 1989 | 1986 | 1974 | 1988 | 1986 | 1989 | 1972 |
| Heating Degree Days (F) | 939. | 843. | 936. | 789. | 611. | 354. | 172. | 178. | 323. | 543. | 774. | 942. | 7404. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 12. | 32. | 26. | 14. | 0. | 0. | 0. | 84. |