| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.0 | 29.2 | 40.6 | 58.3 | 70.9 | 80.2 | 86.1 | 83.2 | 74.0 | 61.2 | 42.4 | 26.1 | 56.2 |
| Highest Mean Max. Temperature (F) | 36.8 | 41.6 | 52.6 | 68.3 | 78.2 | 88.8 | 92.3 | 91.5 | 82.2 | 70.6 | 48.9 | 37.4 | 60.2 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1987 | 1988 | 1976 | 1976 | 1978 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.7 | 18.0 | 28.5 | 47.0 | 64.9 | 73.3 | 79.7 | 76.7 | 61.7 | 51.5 | 27.0 | 7.1 | 53.4 |
| Year Lowest Occurred | 1979 | 1978 | 1969 | 1975 | 1968 | 1969 | 1990 | 1985 | 1965 | 1969 | 1985 | 1983 | 1985 |
| Mean Temperature (F) | 12.6 | 19.3 | 30.9 | 46.3 | 58.4 | 68.1 | 73.7 | 71.0 | 61.5 | 49.2 | 32.7 | 17.2 | 45.1 |
| Highest Mean Temperature (F) | 26.6 | 32.5 | 39.3 | 54.3 | 65.5 | 76.0 | 78.3 | 77.8 | 68.3 | 58.4 | 38.9 | 27.2 | 49.8 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1987 | 1988 | 1974 | 1983 | 1978 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -1.8 | 6.9 | 19.5 | 39.2 | 53.1 | 61.7 | 69.5 | 66.2 | 52.3 | 43.1 | 19.7 | -0.1 | 42.3 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1968 | 1969 | 1972 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 3.1 | 9.3 | 21.1 | 34.2 | 45.8 | 55.9 | 61.2 | 58.8 | 49.0 | 37.1 | 23.0 | 8.2 | 33.9 |
| Highest Mean Min. Temperature (F) | 16.3 | 23.3 | 30.3 | 40.2 | 52.8 | 63.1 | 64.9 | 65.0 | 54.3 | 46.2 | 28.9 | 19.6 | 39.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1987 | 1988 | 1966 | 1983 | 1978 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.2 | -4.7 | 9.5 | 25.7 | 40.8 | 50.0 | 57.0 | 54.5 | 42.8 | 30.2 | 12.4 | -7.2 | 30.8 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1961 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.59 | 0.68 | 1.60 | 2.26 | 3.07 | 4.02 | 3.25 | 2.44 | 2.14 | 1.79 | 0.92 | 0.58 | 23.34 |
| Highest Precipitation (in.) | 2.22 | 2.40 | 3.51 | 7.63 | 8.17 | 11.92 | 8.31 | 5.85 | 7.62 | 4.86 | 3.41 | 2.03 | 35.33 |
| Year Highest Occurred | 1975 | 1977 | 1985 | 1986 | 1962 | 1984 | 1987 | 1984 | 1985 | 1984 | 1971 | 1968 | 1984 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.05 | 0.31 | 0.57 | 1.21 | 0.13 | 0.36 | 0.05 | 0.00 | 0.05 | 0.00 | 11.91 |
| Year Lowest Occurred | 1990 | 1970 | 1971 | 1969 | 1976 | 1973 | 1975 | 1961 | 1974 | 1964 | 1990 | 1986 | 1976 |
| Heating Degree Days (F) | 1624. | 1280. | 1057. | 561. | 236. | 48. | 6. | 24. | 152. | 490. | 969. | 1482. | 7929. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 31. | 141. | 276. | 210. | 47. | 0. | 0. | 0. | 705. |