| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.6 | 29.2 | 41.4 | 58.3 | 72.2 | 81.2 | 84.2 | 81.5 | 73.9 | 62.5 | 44.1 | 27.6 | 56.6 |
| Highest Mean Max. Temperature (F) | 39.3 | 44.6 | 52.5 | 68.0 | 81.6 | 88.1 | 87.7 | 88.9 | 80.8 | 74.8 | 50.2 | 38.7 | 61.3 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1980 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.5 | 18.6 | 27.3 | 47.0 | 65.9 | 72.8 | 79.9 | 77.3 | 66.0 | 57.1 | 31.0 | 11.4 | 53.9 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1972 | 1985 | 1965 | 1988 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 14.2 | 20.0 | 32.3 | 47.2 | 59.7 | 69.2 | 72.7 | 69.7 | 61.8 | 50.6 | 35.0 | 19.2 | 46.0 |
| Highest Mean Temperature (F) | 28.6 | 33.7 | 40.7 | 54.6 | 67.3 | 74.7 | 76.7 | 76.6 | 67.9 | 60.9 | 40.3 | 30.5 | 50.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1987 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 1.8 | 8.9 | 19.8 | 40.2 | 51.5 | 61.4 | 67.3 | 65.5 | 55.6 | 44.3 | 23.4 | 2.5 | 43.5 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1967 | 1965 | 1976 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | 4.7 | 10.8 | 23.2 | 36.0 | 47.2 | 57.1 | 61.2 | 57.9 | 49.7 | 38.6 | 25.9 | 10.6 | 35.2 |
| Highest Mean Min. Temperature (F) | 17.9 | 22.7 | 34.4 | 41.7 | 53.8 | 61.2 | 66.1 | 64.3 | 54.9 | 46.9 | 31.0 | 22.3 | 40.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1987 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -7.0 | -0.8 | 10.5 | 31.4 | 37.0 | 50.0 | 54.5 | 52.6 | 44.0 | 31.1 | 15.7 | -6.4 | 32.7 |
| Year Lowest Occurred | 1979 | 1979 | 1969 | 1961 | 1967 | 1969 | 1971 | 1967 | 1967 | 1976 | 1985 | 1983 | 1967 |
| Mean Precipitation (in.) | 0.67 | 0.77 | 1.83 | 2.89 | 3.62 | 4.15 | 3.84 | 3.85 | 3.33 | 2.13 | 1.44 | 0.89 | 29.41 |
| Highest Precipitation (in.) | 3.10 | 3.40 | 5.30 | 6.27 | 7.60 | 8.28 | 8.89 | 15.06 | 7.96 | 5.68 | 5.25 | 1.98 | 42.22 |
| Year Highest Occurred | 1975 | 1971 | 1983 | 1964 | 1982 | 1981 | 1963 | 1979 | 1964 | 1971 | 1973 | 1968 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.35 | 0.75 | 0.86 | 0.51 | 0.97 | 0.12 | 0.82 | 0.10 | 0.00 | 0.11 | 14.69 |
| Year Lowest Occurred | 1984 | 1986 | 1978 | 1971 | 1989 | 1980 | 1967 | 1984 | 1981 | 1975 | 1976 | 1989 | 1976 |
| Heating Degree Days (F) | 1575. | 1260. | 1014. | 534. | 224. | 30. | 8. | 23. | 133. | 452. | 900. | 1420. | 7573. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 60. | 156. | 247. | 168. | 37. | 6. | 0. | 0. | 674. |