| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.7 | 29.6 | 41.8 | 57.0 | 69.1 | 78.7 | 83.1 | 80.1 | 71.2 | 60.4 | 44.1 | 29.5 | 55.8 |
| Highest Mean Max. Temperature (F) | 37.3 | 39.5 | 52.4 | 64.6 | 77.8 | 85.6 | 87.7 | 86.0 | 75.5 | 73.2 | 50.5 | 38.6 | 59.0 |
| Year Highest Occurred | 1990 | 1984 | 1968 | 1977 | 1977 | 1988 | 1988 | 1988 | 1978 | 1963 | 1975 | 1982 | 1987 |
| Lowest Mean Max. Temperature (F) | 14.0 | 20.8 | 33.8 | 49.0 | 61.4 | 69.6 | 79.0 | 75.9 | 66.6 | 54.6 | 34.7 | 18.9 | 53.3 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1978 | 1977 | 1965 | 1988 | 1985 | 1985 | 1972 |
| Mean Temperature (F) | 14.8 | 19.2 | 31.9 | 45.6 | 56.9 | 66.2 | 70.8 | 68.0 | 59.3 | 48.9 | 34.9 | 20.9 | 44.8 |
| Highest Mean Temperature (F) | 28.3 | 30.3 | 40.1 | 53.1 | 64.1 | 72.2 | 76.0 | 74.3 | 63.3 | 61.2 | 41.2 | 29.9 | 49.4 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1985 | 1964 | 1987 | 1987 | 1988 | 1990 | 1963 | 1963 | 1982 | 1987 |
| Lowest Mean Temperature (F) | 2.9 | 9.1 | 24.5 | 38.4 | 50.5 | 58.2 | 66.7 | 62.9 | 54.0 | 43.1 | 26.8 | 9.1 | 42.2 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1967 | 1969 | 1971 | 1967 | 1974 | 1988 | 1976 | 1985 | 1972 |
| Mean Min. Temperature (F) | 5.0 | 8.7 | 22.1 | 34.3 | 44.6 | 53.6 | 58.4 | 55.8 | 47.3 | 37.4 | 25.7 | 12.2 | 33.8 |
| Highest Mean Min. Temperature (F) | 19.2 | 21.0 | 30.3 | 42.0 | 53.1 | 60.9 | 65.8 | 62.5 | 53.4 | 49.1 | 32.4 | 23.6 | 39.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1985 | 1964 | 1987 | 1987 | 1988 | 1961 | 1963 | 1987 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.3 | -2.6 | 13.6 | 27.8 | 37.2 | 46.0 | 52.7 | 49.2 | 39.7 | 30.0 | 14.9 | -1.3 | 29.5 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1967 | 1982 | 1971 | 1967 | 1976 | 1976 | 1976 | 1976 | 1976 |
| Mean Precipitation (in.) | 1.02 | 1.09 | 2.18 | 2.98 | 3.20 | 3.82 | 3.65 | 3.99 | 4.08 | 2.40 | 2.18 | 1.51 | 32.10 |
| Highest Precipitation (in.) | 2.27 | 3.74 | 4.73 | 6.00 | 6.93 | 8.58 | 6.34 | 16.09 | 14.42 | 6.30 | 6.07 | 2.94 | 46.02 |
| Year Highest Occurred | 1969 | 1971 | 1973 | 1973 | 1973 | 1990 | 1985 | 1980 | 1965 | 1984 | 1985 | 1968 | 1965 |
| Lowest Precipitation (in.) | 0.08 | 0.04 | 0.23 | 0.38 | 0.58 | 0.83 | 0.91 | 0.43 | 0.44 | 0.08 | 0.04 | 0.26 | 21.62 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1989 | 1981 | 1988 | 1967 | 1969 | 1966 | 1964 | 1976 | 1976 | 1963 |
| Heating Degree Days (F) | 1556. | 1282. | 1026. | 582. | 286. | 77. | 16. | 45. | 187. | 506. | 903. | 1367. | 7833. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 35. | 113. | 196. | 138. | 16. | 7. | 0. | 0. | 505. |