| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.3 | 29.3 | 41.4 | 57.5 | 69.6 | 77.9 | 82.6 | 79.8 | 71.1 | 59.8 | 43.1 | 27.8 | 55.3 |
| Highest Mean Max. Temperature (F) | 36.2 | 38.3 | 52.5 | 66.7 | 79.2 | 82.8 | 87.1 | 84.1 | 76.4 | 72.6 | 49.6 | 36.3 | 57.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1977 | 1988 | 1988 | 1988 | 1978 | 1963 | 1963 | 1965 | 1964 |
| Lowest Mean Max. Temperature (F) | 12.2 | 21.4 | 32.1 | 49.8 | 60.8 | 69.5 | 78.0 | 75.0 | 67.4 | 53.7 | 34.6 | 16.8 | 53.0 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1983 | 1983 | 1969 | 1962 | 1987 | 1965 | 1988 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 13.7 | 19.1 | 31.5 | 45.8 | 57.2 | 66.1 | 70.7 | 68.0 | 59.6 | 48.7 | 34.3 | 19.3 | 44.5 |
| Highest Mean Temperature (F) | 27.2 | 28.9 | 40.9 | 53.7 | 65.7 | 70.6 | 73.9 | 72.7 | 64.4 | 59.7 | 39.8 | 28.9 | 47.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1971 | 1964 | 1988 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 1.8 | 9.7 | 23.5 | 39.3 | 50.1 | 59.8 | 66.8 | 62.5 | 56.4 | 42.1 | 26.5 | 6.3 | 42.3 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1982 | 1983 | 1969 | 1971 | 1986 | 1975 | 1988 | 1985 | 1985 | 1982 |
| Mean Min. Temperature (F) | 4.1 | 8.7 | 21.5 | 34.0 | 44.9 | 54.2 | 58.7 | 56.1 | 48.1 | 37.6 | 25.5 | 10.8 | 33.7 |
| Highest Mean Min. Temperature (F) | 18.2 | 19.9 | 30.9 | 40.7 | 52.1 | 59.4 | 63.2 | 61.2 | 52.4 | 46.8 | 31.3 | 21.5 | 37.9 |
| Year Highest Occurred | 1990 | 1987 | 1977 | 1977 | 1977 | 1971 | 1987 | 1988 | 1978 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -9.6 | -2.5 | 11.6 | 25.8 | 39.3 | 48.1 | 54.5 | 49.5 | 43.3 | 30.5 | 16.7 | -5.4 | 31.2 |
| Year Lowest Occurred | 1982 | 1978 | 1969 | 1982 | 1983 | 1982 | 1985 | 1986 | 1984 | 1988 | 1976 | 1985 | 1982 |
| Mean Precipitation (in.) | 0.79 | 0.85 | 1.63 | 3.12 | 3.35 | 3.73 | 4.17 | 4.16 | 4.15 | 2.28 | 1.66 | 1.18 | 31.07 |
| Highest Precipitation (in.) | 2.47 | 2.94 | 3.89 | 7.28 | 8.12 | 10.16 | 11.64 | 13.69 | 11.31 | 5.17 | 4.06 | 4.42 | 44.15 |
| Year Highest Occurred | 1969 | 1971 | 1976 | 1973 | 1973 | 1968 | 1978 | 1980 | 1965 | 1984 | 1982 | 1985 | 1965 |
| Lowest Precipitation (in.) | 0.08 | 0.08 | 0.18 | 0.87 | 1.38 | 0.93 | 0.64 | 0.60 | 0.22 | 0.33 | 0.04 | 0.08 | 20.79 |
| Year Lowest Occurred | 1981 | 1964 | 1986 | 1961 | 1985 | 1988 | 1967 | 1969 | 1979 | 1964 | 1976 | 1979 | 1963 |
| Heating Degree Days (F) | 1590. | 1285. | 1039. | 576. | 273. | 57. | 9. | 31. | 171. | 512. | 921. | 1417. | 7881. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 32. | 90. | 186. | 124. | 9. | 6. | 0. | 0. | 447. |