| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.5 | 25.3 | 36.6 | 51.3 | 65.4 | 73.1 | 78.2 | 75.1 | 65.3 | 54.3 | 37.5 | 23.0 | 50.4 |
| Highest Mean Max. Temperature (F) | 30.0 | 34.4 | 44.8 | 60.4 | 76.4 | 79.8 | 83.9 | 80.8 | 69.8 | 68.0 | 44.2 | 29.4 | 54.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1969 | 1978 | 1963 | 1963 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.3 | 18.5 | 29.5 | 45.0 | 57.5 | 63.8 | 73.4 | 69.9 | 58.8 | 47.3 | 30.6 | 13.5 | 47.7 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1973 | 1969 | 1978 | 1977 | 1965 | 1987 | 1976 | 1989 | 1979 |
| Mean Temperature (F) | 8.1 | 12.2 | 24.5 | 39.3 | 52.5 | 61.1 | 66.3 | 63.3 | 54.3 | 43.8 | 28.9 | 13.7 | 39.0 |
| Highest Mean Temperature (F) | 18.4 | 23.6 | 34.9 | 44.8 | 62.3 | 65.9 | 71.0 | 68.6 | 59.5 | 53.9 | 34.7 | 22.1 | 42.5 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1975 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -2.2 | 4.2 | 16.3 | 33.2 | 46.6 | 54.1 | 62.9 | 58.8 | 48.7 | 37.1 | 21.5 | 2.5 | 37.1 |
| Year Lowest Occurred | 1977 | 1963 | 1965 | 1975 | 1974 | 1969 | 1971 | 1964 | 1965 | 1987 | 1976 | 1989 | 1989 |
| Mean Min. Temperature (F) | -3.2 | -0.8 | 12.3 | 27.2 | 39.6 | 49.0 | 54.3 | 51.4 | 43.2 | 33.2 | 20.4 | 4.3 | 27.6 |
| Highest Mean Min. Temperature (F) | 6.8 | 15.9 | 25.6 | 33.3 | 48.1 | 54.2 | 59.8 | 57.1 | 49.2 | 43.0 | 25.8 | 15.5 | 31.0 |
| Year Highest Occurred | 1990 | 1983 | 1973 | 1986 | 1977 | 1971 | 1983 | 1984 | 1978 | 1971 | 1988 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -14.7 | -10.3 | 3.1 | 21.4 | 33.2 | 40.8 | 49.6 | 45.7 | 38.3 | 24.1 | 12.3 | -8.5 | 24.8 |
| Year Lowest Occurred | 1977 | 1963 | 1965 | 1975 | 1967 | 1974 | 1990 | 1964 | 1967 | 1990 | 1976 | 1989 | 1989 |
| Mean Precipitation (in.) | 1.02 | 0.84 | 1.65 | 2.31 | 3.39 | 3.75 | 3.64 | 4.48 | 3.98 | 2.56 | 2.04 | 1.37 | 31.03 |
| Highest Precipitation (in.) | 2.37 | 2.90 | 4.71 | 5.35 | 7.06 | 10.80 | 6.83 | 13.77 | 7.16 | 4.92 | 4.64 | 2.61 | 42.36 |
| Year Highest Occurred | 1967 | 1971 | 1973 | 1982 | 1973 | 1968 | 1969 | 1978 | 1985 | 1990 | 1975 | 1982 | 1978 |
| Lowest Precipitation (in.) | 0.12 | 0.04 | 0.25 | 0.31 | 0.35 | 1.39 | 1.09 | 0.39 | 0.51 | 0.21 | 0.43 | 0.14 | 16.05 |
| Year Lowest Occurred | 1977 | 1980 | 1962 | 1971 | 1986 | 1964 | 1975 | 1970 | 1976 | 1976 | 1981 | 1976 | 1976 |
| Heating Degree Days (F) | 1764. | 1478. | 1256. | 771. | 406. | 158. | 51. | 108. | 321. | 657. | 1083. | 1590. | 9643. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 41. | 91. | 56. | 0. | 0. | 0. | 0. | 207. |