| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 52.9 | 57.0 | 61.1 | 69.2 | 77.6 | 87.0 | 87.9 | 84.8 | 80.1 | 72.1 | 61.2 | 53.8 | 70.4 |
| Highest Mean Max. Temperature (F) | 60.8 | 63.9 | 72.3 | 78.5 | 83.6 | 93.3 | 92.0 | 90.9 | 84.4 | 77.3 | 67.6 | 62.2 | 73.2 |
| Year Highest Occurred | 1986 | 1977 | 1972 | 1989 | 1984 | 1974 | 1969 | 1962 | 1973 | 1965 | 1977 | 1977 | 1989 |
| Lowest Mean Max. Temperature (F) | 46.4 | 49.5 | 54.4 | 61.9 | 68.8 | 79.8 | 77.6 | 80.2 | 75.9 | 61.8 | 55.9 | 47.3 | 68.2 |
| Year Lowest Occurred | 1979 | 1966 | 1973 | 1983 | 1981 | 1981 | 1981 | 1963 | 1985 | 1984 | 1982 | 1967 | 1983 |
| Mean Temperature (F) | 35.3 | 38.3 | 42.3 | 48.9 | 56.6 | 65.4 | 70.2 | 68.0 | 62.5 | 52.9 | 42.3 | 35.8 | 51.5 |
| Highest Mean Temperature (F) | 40.1 | 43.2 | 49.2 | 57.8 | 62.6 | 70.1 | 73.3 | 72.0 | 65.6 | 58.8 | 46.0 | 42.0 | 54.5 |
| Year Highest Occurred | 1986 | 1989 | 1989 | 1989 | 1984 | 1990 | 1969 | 1969 | 1983 | 1988 | 1977 | 1977 | 1989 |
| Lowest Mean Temperature (F) | 30.8 | 31.7 | 37.4 | 42.8 | 51.7 | 60.4 | 61.8 | 63.8 | 58.9 | 47.5 | 38.4 | 31.4 | 50.0 |
| Year Lowest Occurred | 1964 | 1964 | 1969 | 1970 | 1971 | 1981 | 1981 | 1968 | 1985 | 1980 | 1980 | 1968 | 1981 |
| Mean Min. Temperature (F) | 17.6 | 19.5 | 23.4 | 28.5 | 35.6 | 43.8 | 52.4 | 51.1 | 44.9 | 33.7 | 23.3 | 17.9 | 32.6 |
| Highest Mean Min. Temperature (F) | 26.3 | 26.4 | 29.5 | 37.0 | 42.2 | 49.8 | 56.4 | 57.0 | 50.5 | 41.6 | 28.5 | 23.9 | 36.8 |
| Year Highest Occurred | 1980 | 1989 | 1989 | 1989 | 1989 | 1988 | 1989 | 1988 | 1983 | 1988 | 1978 | 1986 | 1988 |
| Lowest Mean Min. Temperature (F) | 10.2 | 10.3 | 16.8 | 20.6 | 27.2 | 40.0 | 45.9 | 46.6 | 37.9 | 23.3 | 14.4 | 11.5 | 30.0 |
| Year Lowest Occurred | 1964 | 1964 | 1969 | 1970 | 1971 | 1963 | 1981 | 1980 | 1968 | 1980 | 1980 | 1968 | 1971 |
| Mean Precipitation (in.) | 1.35 | 1.27 | 1.16 | 0.59 | 0.54 | 0.74 | 3.91 | 3.98 | 2.67 | 2.41 | 1.22 | 2.03 | 21.87 |
| Highest Precipitation (in.) | 3.31 | 5.21 | 3.15 | 2.89 | 1.71 | 3.91 | 7.83 | 11.89 | 6.89 | 13.79 | 4.96 | 8.38 | 34.49 |
| Year Highest Occurred | 1979 | 1980 | 1986 | 1988 | 1987 | 1972 | 1964 | 1963 | 1983 | 1972 | 1978 | 1984 | 1983 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.39 | 1.11 | 0.00 | 0.00 | 0.00 | 0.00 | 11.94 |
| Year Lowest Occurred | 1972 | 1984 | 1972 | 1989 | 1977 | 1989 | 1969 | 1989 | 1973 | 1982 | 1970 | 1981 | 1989 |
| Heating Degree Days (F) | 921. | 748. | 704. | 483. | 267. | 64. | 19. | 20. | 98. | 379. | 681. | 905. | 5289. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 7. | 76. | 180. | 113. | 23. | 0. | 0. | 0. | 399. |