| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.8 | 26.3 | 39.9 | 57.7 | 70.9 | 79.9 | 86.3 | 84.7 | 73.6 | 60.8 | 40.2 | 24.7 | 55.4 |
| Highest Mean Max. Temperature (F) | 34.7 | 40.1 | 52.3 | 69.2 | 80.1 | 91.8 | 92.0 | 93.5 | 81.6 | 70.6 | 48.8 | 37.0 | 60.3 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1974 | 1983 | 1979 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.5 | 13.0 | 28.0 | 43.7 | 65.2 | 72.1 | 78.8 | 78.6 | 59.5 | 52.9 | 26.7 | 7.9 | 51.9 |
| Year Lowest Occurred | 1979 | 1979 | 1969 | 1975 | 1979 | 1969 | 1962 | 1977 | 1965 | 1969 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 9.0 | 15.8 | 29.7 | 45.3 | 57.8 | 66.9 | 72.8 | 71.0 | 60.1 | 48.0 | 30.1 | 14.8 | 43.4 |
| Highest Mean Temperature (F) | 24.4 | 31.0 | 39.0 | 53.6 | 67.4 | 77.1 | 77.8 | 78.6 | 66.7 | 56.7 | 38.2 | 25.7 | 48.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -3.3 | 2.7 | 17.4 | 36.8 | 52.0 | 59.9 | 66.9 | 65.9 | 49.0 | 42.8 | 16.7 | -0.9 | 40.6 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -1.8 | 5.3 | 19.3 | 32.8 | 44.5 | 53.9 | 59.3 | 57.3 | 46.6 | 35.2 | 20.1 | 4.8 | 31.4 |
| Highest Mean Min. Temperature (F) | 14.1 | 21.8 | 30.4 | 38.4 | 54.7 | 62.4 | 64.4 | 63.6 | 52.1 | 42.7 | 27.5 | 17.1 | 37.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1982 | 1987 |
| Lowest Mean Min. Temperature (F) | -14.6 | -7.7 | 6.7 | 26.7 | 38.1 | 47.7 | 52.4 | 52.6 | 38.5 | 29.1 | 6.6 | -9.6 | 28.3 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1966 | 1967 | 1969 | 1971 | 1966 | 1965 | 1976 | 1985 | 1983 | 1966 |
| Mean Precipitation (in.) | 0.45 | 0.44 | 0.82 | 1.84 | 2.69 | 3.58 | 2.58 | 2.18 | 1.91 | 1.29 | 0.64 | 0.39 | 18.81 |
| Highest Precipitation (in.) | 1.70 | 1.46 | 2.36 | 7.27 | 6.74 | 7.39 | 8.37 | 5.36 | 5.47 | 4.31 | 2.05 | 1.44 | 32.33 |
| Year Highest Occurred | 1989 | 1987 | 1977 | 1986 | 1972 | 1984 | 1986 | 1963 | 1988 | 1984 | 1977 | 1972 | 1986 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.03 | 0.14 | 0.36 | 0.58 | 0.00 | 0.10 | 0.14 | 0.05 | 0.00 | 0.00 | 9.43 |
| Year Lowest Occurred | 1974 | 1968 | 1967 | 1985 | 1976 | 1972 | 1975 | 1969 | 1979 | 1964 | 1980 | 1986 | 1976 |
| Heating Degree Days (F) | 1736. | 1378. | 1094. | 591. | 258. | 71. | 19. | 34. | 193. | 527. | 1047. | 1556. | 8504. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 34. | 128. | 261. | 220. | 46. | 0. | 0. | 0. | 689. |