| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.3 | 22.3 | 32.0 | 46.1 | 60.6 | 69.8 | 75.8 | 72.7 | 62.9 | 51.9 | 36.8 | 24.8 | 48.0 |
| Highest Mean Max. Temperature (F) | 29.6 | 32.6 | 39.0 | 56.9 | 70.1 | 75.5 | 82.2 | 78.1 | 67.9 | 65.2 | 42.6 | 30.4 | 52.6 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1976 | 1988 | 1983 | 1971 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Max. Temperature (F) | 11.6 | 13.9 | 25.6 | 39.7 | 52.8 | 61.8 | 71.2 | 67.7 | 57.2 | 46.0 | 30.7 | 17.1 | 45.1 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1970 | 1969 | 1965 | 1982 | 1965 | 1980 | 1976 | 1989 | 1972 |
| Mean Temperature (F) | 13.9 | 14.9 | 24.5 | 37.9 | 50.5 | 59.2 | 65.7 | 63.6 | 54.8 | 44.7 | 31.4 | 19.3 | 40.0 |
| Highest Mean Temperature (F) | 23.2 | 25.5 | 32.9 | 46.3 | 58.2 | 64.2 | 70.9 | 69.5 | 58.4 | 55.2 | 36.6 | 26.2 | 44.6 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1987 | 1988 | 1983 | 1971 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | 5.4 | 6.1 | 17.6 | 32.3 | 43.9 | 52.9 | 60.9 | 59.3 | 49.7 | 39.3 | 26.2 | 11.4 | 37.0 |
| Year Lowest Occurred | 1977 | 1979 | 1972 | 1972 | 1967 | 1969 | 1965 | 1982 | 1974 | 1980 | 1976 | 1976 | 1972 |
| Mean Min. Temperature (F) | 7.5 | 7.6 | 16.9 | 29.6 | 40.2 | 48.7 | 55.5 | 54.4 | 46.7 | 37.5 | 26.0 | 13.7 | 32.0 |
| Highest Mean Min. Temperature (F) | 16.7 | 19.4 | 26.8 | 35.7 | 46.2 | 53.8 | 59.7 | 60.9 | 50.5 | 45.2 | 30.6 | 21.9 | 36.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1987 | 1983 | 1983 | 1987 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -1.6 | -1.7 | 9.4 | 24.4 | 34.2 | 43.9 | 50.5 | 50.3 | 41.3 | 32.5 | 21.1 | 4.2 | 28.8 |
| Year Lowest Occurred | 1982 | 1979 | 1972 | 1972 | 1967 | 1969 | 1965 | 1967 | 1974 | 1980 | 1989 | 1976 | 1972 |
| Mean Precipitation (in.) | 3.81 | 2.34 | 2.27 | 1.87 | 2.64 | 2.93 | 2.84 | 2.91 | 3.33 | 2.73 | 2.78 | 3.56 | 34.01 |
| Highest Precipitation (in.) | 8.51 | 5.11 | 7.47 | 3.17 | 5.50 | 6.61 | 6.19 | 6.44 | 6.62 | 5.69 | 6.91 | 9.48 | 53.43 |
| Year Highest Occurred | 1980 | 1989 | 1976 | 1982 | 1964 | 1989 | 1968 | 1988 | 1985 | 1967 | 1985 | 1983 | 1985 |
| Lowest Precipitation (in.) | 1.65 | 0.92 | 0.36 | 0.66 | 0.35 | 0.61 | 0.59 | 0.23 | 1.12 | 1.03 | 0.72 | 1.01 | 24.66 |
| Year Lowest Occurred | 1968 | 1970 | 1962 | 1987 | 1986 | 1982 | 1964 | 1990 | 1989 | 1972 | 1981 | 1979 | 1966 |
| Heating Degree Days (F) | 1584. | 1403. | 1256. | 813. | 458. | 190. | 74. | 112. | 306. | 629. | 1008. | 1417. | 9250. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 9. | 16. | 96. | 68. | 0. | 0. | 0. | 0. | 189. |