| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.3 | 27.9 | 40.1 | 56.7 | 70.8 | 80.2 | 83.8 | 80.8 | 72.0 | 60.1 | 41.8 | 26.2 | 55.2 |
| Highest Mean Max. Temperature (F) | 37.7 | 42.7 | 51.3 | 66.5 | 81.5 | 85.9 | 87.7 | 88.8 | 79.3 | 72.8 | 48.9 | 36.4 | 59.5 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1976 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.1 | 17.8 | 26.7 | 46.3 | 64.8 | 71.4 | 77.0 | 76.3 | 62.1 | 54.8 | 31.0 | 10.8 | 52.4 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1986 | 1965 | 1987 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 13.0 | 18.7 | 31.3 | 46.5 | 59.6 | 69.1 | 72.9 | 70.1 | 61.1 | 49.5 | 33.4 | 17.9 | 45.3 |
| Highest Mean Temperature (F) | 28.0 | 32.5 | 39.3 | 54.7 | 68.3 | 74.6 | 76.5 | 75.6 | 67.6 | 60.8 | 39.9 | 29.7 | 50.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 0.5 | 6.7 | 18.8 | 40.2 | 54.3 | 62.2 | 66.7 | 65.4 | 53.9 | 43.7 | 21.7 | 3.2 | 42.0 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1985 | 1965 | 1980 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 3.7 | 9.4 | 22.4 | 36.2 | 48.3 | 57.9 | 62.0 | 59.3 | 50.1 | 38.9 | 24.9 | 9.5 | 35.2 |
| Highest Mean Min. Temperature (F) | 18.3 | 22.3 | 31.1 | 42.9 | 55.0 | 63.2 | 65.8 | 63.6 | 55.9 | 48.8 | 30.9 | 23.0 | 40.6 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1966 | 1988 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.5 | -4.5 | 9.7 | 31.9 | 42.7 | 52.2 | 56.4 | 54.2 | 44.2 | 31.7 | 12.4 | -4.5 | 31.7 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1979 | 1979 | 1985 | 1971 | 1985 | 1974 | 1980 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.71 | 0.78 | 1.84 | 2.96 | 3.50 | 4.00 | 4.02 | 4.06 | 3.08 | 2.25 | 1.51 | 1.08 | 29.79 |
| Highest Precipitation (in.) | 2.13 | 2.90 | 4.51 | 5.77 | 8.20 | 9.17 | 10.57 | 13.90 | 8.37 | 6.23 | 5.19 | 3.93 | 41.74 |
| Year Highest Occurred | 1967 | 1971 | 1977 | 1964 | 1970 | 1967 | 1963 | 1979 | 1968 | 1977 | 1983 | 1982 | 1979 |
| Lowest Precipitation (in.) | 0.06 | 0.00 | 0.30 | 0.73 | 1.20 | 1.35 | 0.73 | 1.24 | 0.53 | 0.06 | 0.07 | 0.16 | 17.86 |
| Year Lowest Occurred | 1990 | 1987 | 1968 | 1971 | 1967 | 1988 | 1975 | 1973 | 1967 | 1988 | 1976 | 1962 | 1976 |
| Heating Degree Days (F) | 1612. | 1296. | 1045. | 555. | 218. | 30. | 8. | 20. | 149. | 486. | 948. | 1460. | 7827. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 50. | 153. | 253. | 178. | 32. | 5. | 0. | 0. | 671. |