| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.2 | 29.1 | 41.2 | 56.8 | 69.0 | 78.9 | 83.2 | 80.7 | 72.0 | 60.9 | 43.5 | 27.7 | 55.5 |
| Highest Mean Max. Temperature (F) | 35.2 | 42.6 | 52.4 | 66.6 | 78.0 | 87.9 | 89.1 | 87.3 | 77.8 | 67.4 | 50.3 | 36.4 | 60.2 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1964 | 1983 | 1978 | 1975 | 1975 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 11.2 | 20.6 | 29.9 | 49.1 | 62.5 | 69.8 | 78.1 | 74.1 | 65.5 | 55.7 | 35.8 | 14.5 | 52.9 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1961 | 1963 | 1969 | 1962 | 1963 | 1965 | 1980 | 1985 | 1983 | 1982 |
| Mean Temperature (F) | 11.8 | 17.2 | 30.5 | 44.8 | 56.2 | 65.9 | 70.3 | 67.6 | 58.8 | 48.0 | 32.9 | 17.6 | 43.5 |
| Highest Mean Temperature (F) | 26.0 | 27.9 | 39.8 | 52.7 | 64.4 | 71.1 | 74.8 | 73.0 | 64.6 | 54.9 | 39.2 | 27.7 | 46.5 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1977 | 1988 | 1964 | 1983 | 1978 | 1963 | 1990 | 1965 | 1990 |
| Lowest Mean Temperature (F) | -0.1 | 7.5 | 19.1 | 38.8 | 50.0 | 58.5 | 66.1 | 61.7 | 54.9 | 41.4 | 24.6 | 5.2 | 41.3 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1961 | 1967 | 1969 | 1971 | 1986 | 1975 | 1987 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | 0.3 | 5.3 | 19.8 | 32.7 | 43.3 | 52.8 | 57.5 | 54.4 | 45.7 | 34.9 | 22.3 | 7.5 | 31.4 |
| Highest Mean Min. Temperature (F) | 16.7 | 19.1 | 30.0 | 39.3 | 51.5 | 58.3 | 61.1 | 59.4 | 51.5 | 44.0 | 29.8 | 18.9 | 35.8 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1985 | 1962 | 1971 | 1983 | 1990 | 1990 | 1963 | 1983 | 1965 | 1990 |
| Lowest Mean Min. Temperature (F) | -12.7 | -7.0 | 8.2 | 28.5 | 36.5 | 47.1 | 52.0 | 45.9 | 39.9 | 24.1 | 11.6 | -8.3 | 28.6 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1961 | 1967 | 1969 | 1967 | 1986 | 1987 | 1987 | 1986 | 1985 | 1967 |
| Mean Precipitation (in.) | 0.89 | 0.79 | 1.98 | 2.84 | 3.78 | 4.25 | 4.15 | 4.10 | 4.12 | 2.55 | 1.68 | 1.30 | 32.43 |
| Highest Precipitation (in.) | 4.08 | 3.07 | 3.99 | 5.64 | 8.72 | 9.64 | 10.88 | 11.14 | 12.74 | 4.97 | 5.21 | 3.97 | 49.15 |
| Year Highest Occurred | 1963 | 1971 | 1976 | 1968 | 1982 | 1990 | 1981 | 1980 | 1965 | 1982 | 1983 | 1982 | 1983 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.25 | 0.62 | 0.88 | 0.80 | 0.99 | 0.62 | 0.43 | 0.14 | 0.06 | 0.23 | 18.37 |
| Year Lowest Occurred | 1986 | 1986 | 1978 | 1966 | 1985 | 1988 | 1967 | 1970 | 1975 | 1975 | 1962 | 1986 | 1964 |
| Heating Degree Days (F) | 1649. | 1338. | 1070. | 606. | 299. | 66. | 19. | 50. | 199. | 527. | 963. | 1469. | 8255. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 26. | 93. | 183. | 130. | 13. | 0. | 0. | 0. | 445. |