| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.9 | 28.4 | 40.8 | 57.9 | 70.9 | 78.7 | 83.8 | 80.9 | 71.4 | 59.3 | 41.6 | 26.0 | 55.1 |
| Highest Mean Max. Temperature (F) | 34.5 | 39.8 | 52.2 | 68.0 | 79.9 | 87.6 | 92.2 | 87.5 | 75.1 | 70.1 | 49.0 | 34.3 | 59.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1988 | 1988 | 1987 | 1963 | 1990 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.2 | 17.9 | 31.5 | 49.8 | 63.0 | 70.9 | 75.8 | 74.8 | 63.8 | 53.7 | 34.1 | 14.7 | 50.4 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1979 | 1979 | 1969 | 1978 | 1979 | 1965 | 1987 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 11.7 | 17.5 | 30.4 | 45.6 | 57.6 | 66.0 | 71.2 | 68.6 | 59.6 | 48.2 | 33.0 | 17.5 | 43.9 |
| Highest Mean Temperature (F) | 25.1 | 29.0 | 40.6 | 52.7 | 64.1 | 71.7 | 76.5 | 74.4 | 63.2 | 58.1 | 38.4 | 26.5 | 48.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1988 | 1990 | 1963 | 1990 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -1.6 | 6.7 | 21.1 | 39.0 | 50.6 | 59.8 | 65.9 | 62.6 | 54.5 | 41.1 | 23.1 | 5.7 | 39.8 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1979 | 1979 | 1982 | 1978 | 1977 | 1965 | 1976 | 1976 | 1983 | 1978 |
| Mean Min. Temperature (F) | 1.5 | 6.5 | 19.9 | 33.3 | 44.3 | 53.3 | 58.6 | 56.3 | 47.7 | 37.1 | 24.3 | 8.9 | 32.6 |
| Highest Mean Min. Temperature (F) | 15.6 | 19.1 | 31.2 | 38.8 | 51.1 | 58.8 | 63.3 | 61.6 | 52.2 | 46.0 | 29.7 | 19.6 | 37.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1962 | 1971 | 1987 | 1983 | 1990 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.4 | -5.5 | 10.6 | 28.1 | 37.9 | 46.4 | 54.6 | 49.6 | 40.2 | 27.6 | 10.9 | -4.5 | 28.0 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1979 | 1967 | 1982 | 1962 | 1977 | 1976 | 1976 | 1976 | 1976 | 1978 |
| Mean Precipitation (in.) | 0.94 | 0.70 | 1.79 | 2.67 | 3.62 | 4.47 | 3.70 | 4.97 | 4.09 | 2.44 | 1.70 | 1.17 | 32.26 |
| Highest Precipitation (in.) | 3.21 | 2.33 | 4.70 | 5.92 | 7.51 | 11.91 | 7.14 | 10.42 | 10.84 | 5.79 | 4.58 | 2.99 | 44.62 |
| Year Highest Occurred | 1969 | 1971 | 1977 | 1975 | 1962 | 1990 | 1987 | 1977 | 1986 | 1970 | 1975 | 1965 | 1990 |
| Lowest Precipitation (in.) | 0.01 | 0.00 | 0.25 | 0.78 | 0.85 | 1.02 | 0.74 | 0.85 | 0.70 | 0.19 | 0.07 | 0.20 | 16.92 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1987 | 1976 | 1988 | 1974 | 1970 | 1976 | 1976 | 1967 | 1989 | 1976 |
| Heating Degree Days (F) | 1652. | 1330. | 1073. | 582. | 268. | 77. | 19. | 36. | 175. | 521. | 960. | 1473. | 8166. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 38. | 107. | 211. | 148. | 13. | 0. | 0. | 0. | 517. |