| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 49.0 | 50.5 | 52.1 | 58.6 | 67.3 | 75.5 | 83.2 | 82.5 | 77.0 | 67.9 | 53.8 | 48.7 | 63.8 |
| Highest Mean Max. Temperature (F) | 57.5 | 60.4 | 60.2 | 67.3 | 73.6 | 84.8 | 89.4 | 87.8 | 84.1 | 77.5 | 65.6 | 60.5 | 66.7 |
| Year Highest Occurred | 1961 | 1988 | 1988 | 1987 | 1973 | 1961 | 1961 | 1967 | 1974 | 1988 | 1976 | 1989 | 1961 |
| Lowest Mean Max. Temperature (F) | 42.6 | 39.3 | 43.7 | 41.0 | 57.3 | 69.0 | 77.8 | 75.8 | 66.9 | 59.5 | 42.7 | 39.2 | 59.2 |
| Year Lowest Occurred | 1973 | 1969 | 1982 | 1967 | 1977 | 1980 | 1982 | 1976 | 1986 | 1984 | 1973 | 1971 | 1982 |
| Mean Temperature (F) | 38.8 | 40.0 | 41.4 | 46.2 | 53.6 | 61.2 | 67.1 | 66.5 | 61.7 | 54.2 | 43.5 | 38.9 | 51.1 |
| Highest Mean Temperature (F) | 44.9 | 47.6 | 47.4 | 52.9 | 57.9 | 70.1 | 72.1 | 71.6 | 66.7 | 61.0 | 51.0 | 45.8 | 53.5 |
| Year Highest Occurred | 1961 | 1963 | 1972 | 1987 | 1966 | 1961 | 1961 | 1967 | 1962 | 1988 | 1976 | 1989 | 1961 |
| Lowest Mean Temperature (F) | 34.0 | 33.0 | 36.5 | 34.6 | 46.4 | 55.4 | 61.6 | 61.3 | 54.7 | 47.1 | 36.1 | 31.6 | 47.6 |
| Year Lowest Occurred | 1982 | 1969 | 1982 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1973 | 1971 | 1982 |
| Mean Min. Temperature (F) | 28.5 | 29.4 | 30.6 | 33.9 | 39.8 | 46.8 | 50.9 | 50.4 | 46.3 | 40.5 | 33.0 | 29.1 | 38.3 |
| Highest Mean Min. Temperature (F) | 34.6 | 39.0 | 36.3 | 40.2 | 44.8 | 55.4 | 56.2 | 56.3 | 52.7 | 45.2 | 38.2 | 35.8 | 41.3 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1990 | 1963 | 1961 | 1962 | 1961 | 1963 | 1962 | 1962 | 1962 | 1963 |
| Lowest Mean Min. Temperature (F) | 24.6 | 23.8 | 25.5 | 28.2 | 35.3 | 41.7 | 44.7 | 46.7 | 42.0 | 34.7 | 29.0 | 23.5 | 35.9 |
| Year Lowest Occurred | 1974 | 1990 | 1976 | 1975 | 1974 | 1980 | 1983 | 1976 | 1972 | 1984 | 1982 | 1990 | 1982 |
| Mean Precipitation (in.) | 14.96 | 11.81 | 11.64 | 5.82 | 2.32 | 0.78 | 0.27 | 0.42 | 1.60 | 4.94 | 12.16 | 12.85 | 79.57 |
| Highest Precipitation (in.) | 42.62 | 42.21 | 32.31 | 23.04 | 10.72 | 3.33 | 4.67 | 3.17 | 11.33 | 28.91 | 34.61 | 45.66 | 151.38 |
| Year Highest Occurred | 1970 | 1986 | 1983 | 1982 | 1990 | 1967 | 1974 | 1976 | 1986 | 1962 | 1973 | 1964 | 1983 |
| Lowest Precipitation (in.) | 1.02 | 0.81 | 2.54 | 0.70 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.68 | 0.00 | 25.19 |
| Year Lowest Occurred | 1984 | 1964 | 1976 | 1973 | 1976 | 1986 | 1989 | 1988 | 1988 | 1978 | 1986 | 1989 | 1976 |
| Heating Degree Days (F) | 812. | 700. | 732. | 571. | 359. | 159. | 50. | 65. | 154. | 351. | 645. | 809. | 5407. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 7. | 5. | 45. | 115. | 111. | 55. | 16. | 0. | 0. | 354. |