| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.1 | 26.9 | 39.4 | 56.1 | 69.1 | 76.9 | 81.9 | 79.3 | 70.0 | 58.5 | 40.8 | 25.4 | 53.8 |
| Highest Mean Max. Temperature (F) | 32.6 | 36.0 | 50.3 | 65.6 | 79.3 | 82.1 | 86.8 | 84.5 | 75.7 | 69.5 | 47.7 | 33.4 | 56.5 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1964 | 1976 | 1978 | 1963 | 1975 | 1982 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.5 | 18.4 | 29.3 | 48.9 | 60.6 | 69.0 | 77.9 | 75.6 | 63.0 | 51.0 | 36.0 | 13.4 | 51.4 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1983 | 1983 | 1969 | 1971 | 1986 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 10.9 | 16.1 | 29.1 | 44.2 | 56.0 | 64.4 | 69.5 | 67.0 | 58.2 | 47.3 | 32.2 | 16.6 | 42.6 |
| Highest Mean Temperature (F) | 22.6 | 26.0 | 40.4 | 51.9 | 65.3 | 68.6 | 72.5 | 70.9 | 63.5 | 56.5 | 37.6 | 25.4 | 46.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1971 | 1989 | 1988 | 1978 | 1963 | 1975 | 1982 | 1987 |
| Lowest Mean Temperature (F) | 0.3 | 6.8 | 19.6 | 38.5 | 49.7 | 58.2 | 65.7 | 62.9 | 53.7 | 40.2 | 25.0 | 2.7 | 40.1 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1983 | 1969 | 1962 | 1986 | 1965 | 1988 | 1976 | 1983 | 1985 |
| Mean Min. Temperature (F) | 0.7 | 5.2 | 18.9 | 32.4 | 43.0 | 51.9 | 57.1 | 54.7 | 46.4 | 36.0 | 23.6 | 7.8 | 31.5 |
| Highest Mean Min. Temperature (F) | 12.5 | 18.9 | 30.4 | 38.1 | 51.3 | 56.4 | 61.3 | 58.8 | 51.2 | 44.5 | 27.9 | 18.5 | 35.4 |
| Year Highest Occurred | 1990 | 1983 | 1973 | 1977 | 1977 | 1971 | 1987 | 1988 | 1978 | 1971 | 1963 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -10.0 | -4.8 | 9.8 | 28.0 | 36.1 | 47.2 | 52.6 | 50.1 | 40.9 | 28.2 | 13.9 | -9.5 | 28.0 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1967 | 1985 | 1985 | 1967 | 1974 | 1988 | 1976 | 1985 | 1985 |
| Mean Precipitation (in.) | 1.02 | 0.77 | 1.62 | 2.58 | 3.73 | 4.12 | 3.92 | 4.13 | 3.91 | 2.32 | 1.82 | 1.31 | 31.25 |
| Highest Precipitation (in.) | 3.79 | 2.12 | 3.82 | 4.86 | 7.78 | 12.25 | 8.11 | 9.38 | 13.00 | 5.35 | 5.06 | 3.20 | 43.31 |
| Year Highest Occurred | 1969 | 1971 | 1977 | 1975 | 1968 | 1980 | 1986 | 1980 | 1986 | 1979 | 1975 | 1968 | 1990 |
| Lowest Precipitation (in.) | 0.03 | 0.04 | 0.03 | 0.93 | 0.67 | 1.07 | 0.22 | 1.08 | 0.52 | 0.10 | 0.17 | 0.22 | 15.23 |
| Year Lowest Occurred | 1981 | 1969 | 1978 | 1987 | 1986 | 1983 | 1974 | 1970 | 1976 | 1976 | 1976 | 1986 | 1976 |
| Heating Degree Days (F) | 1677. | 1369. | 1113. | 624. | 308. | 83. | 22. | 40. | 211. | 549. | 984. | 1500. | 8480. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 29. | 65. | 162. | 102. | 7. | 0. | 0. | 0. | 365. |