| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.3 | 29.9 | 41.5 | 56.6 | 69.1 | 77.6 | 81.9 | 79.3 | 70.6 | 59.5 | 43.6 | 29.0 | 55.2 |
| Highest Mean Max. Temperature (F) | 38.1 | 39.9 | 50.5 | 66.1 | 78.0 | 84.6 | 88.1 | 84.7 | 74.5 | 71.1 | 50.9 | 38.1 | 59.1 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1988 | 1984 | 1979 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.9 | 23.8 | 32.3 | 49.1 | 62.4 | 69.0 | 76.3 | 74.2 | 66.1 | 51.9 | 34.8 | 18.3 | 52.4 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1975 | 1983 | 1969 | 1962 | 1977 | 1965 | 1976 | 1976 | 1983 | 1972 |
| Mean Temperature (F) | 14.4 | 18.9 | 31.3 | 45.3 | 57.1 | 66.2 | 70.9 | 68.3 | 59.6 | 48.5 | 34.5 | 20.2 | 44.6 |
| Highest Mean Temperature (F) | 27.2 | 29.2 | 39.6 | 50.6 | 63.0 | 70.9 | 75.9 | 73.6 | 63.1 | 58.8 | 39.3 | 29.5 | 47.3 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1985 | 1977 | 1971 | 1983 | 1983 | 1971 | 1963 | 1963 | 1982 | 1987 |
| Lowest Mean Temperature (F) | 1.7 | 11.4 | 23.9 | 39.6 | 51.9 | 59.7 | 66.5 | 63.9 | 54.7 | 40.9 | 26.1 | 7.8 | 42.4 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1986 | 1975 | 1988 | 1976 | 1985 | 1989 |
| Mean Min. Temperature (F) | 4.5 | 7.8 | 21.0 | 34.1 | 45.1 | 54.9 | 59.8 | 57.4 | 48.5 | 37.5 | 25.3 | 11.3 | 33.9 |
| Highest Mean Min. Temperature (F) | 16.2 | 19.5 | 30.1 | 39.6 | 52.0 | 60.5 | 65.3 | 63.4 | 52.5 | 46.4 | 30.0 | 22.0 | 37.8 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1982 | 1971 | 1983 | 1983 | 1971 | 1963 | 1963 | 1965 | 1973 |
| Lowest Mean Min. Temperature (F) | -7.5 | -2.8 | 12.8 | 29.1 | 39.9 | 49.4 | 54.9 | 50.9 | 42.6 | 27.7 | 17.4 | -5.1 | 30.0 |
| Year Lowest Occurred | 1977 | 1979 | 1969 | 1989 | 1990 | 1989 | 1984 | 1986 | 1989 | 1987 | 1976 | 1985 | 1989 |
| Mean Precipitation (in.) | 0.93 | 0.89 | 2.13 | 2.97 | 3.41 | 3.90 | 3.77 | 4.37 | 3.89 | 2.35 | 1.87 | 1.41 | 31.89 |
| Highest Precipitation (in.) | 2.56 | 2.95 | 4.66 | 7.44 | 6.91 | 7.80 | 6.94 | 14.13 | 12.82 | 4.83 | 5.79 | 2.98 | 46.20 |
| Year Highest Occurred | 1969 | 1971 | 1973 | 1973 | 1973 | 1984 | 1980 | 1980 | 1965 | 1984 | 1982 | 1968 | 1965 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.75 | 0.27 | 0.85 | 0.85 | 0.73 | 0.30 | 0.14 | 0.04 | 0.30 | 20.89 |
| Year Lowest Occurred | 1987 | 1989 | 1989 | 1989 | 1981 | 1987 | 1967 | 1970 | 1979 | 1975 | 1976 | 1989 | 1989 |
| Heating Degree Days (F) | 1569. | 1291. | 1045. | 591. | 271. | 60. | 10. | 32. | 173. | 518. | 915. | 1389. | 7864. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 26. | 96. | 193. | 135. | 11. | 6. | 0. | 0. | 467. |