| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 16.3 | 22.3 | 35.3 | 53.8 | 68.7 | 77.5 | 83.5 | 81.6 | 70.3 | 58.1 | 38.4 | 21.8 | 52.3 |
| Highest Mean Max. Temperature (F) | 31.3 | 37.7 | 48.9 | 67.2 | 80.3 | 88.2 | 89.9 | 88.8 | 76.5 | 68.8 | 46.1 | 34.3 | 58.5 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1976 | 1990 | 1963 | 1990 | 1986 | 1987 |
| Lowest Mean Max. Temperature (F) | 3.8 | 8.5 | 24.3 | 41.2 | 61.4 | 69.4 | 77.9 | 75.0 | 57.9 | 51.3 | 28.0 | 6.4 | 48.4 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1975 | 1974 | 1969 | 1962 | 1977 | 1965 | 1983 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 5.8 | 12.2 | 26.1 | 43.1 | 56.3 | 65.6 | 70.8 | 68.6 | 58.0 | 46.0 | 28.9 | 12.2 | 41.1 |
| Highest Mean Temperature (F) | 20.9 | 28.5 | 37.3 | 52.0 | 67.4 | 73.6 | 75.1 | 73.2 | 63.9 | 55.7 | 34.9 | 23.1 | 46.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1976 | 1978 | 1963 | 1962 | 1986 | 1987 |
| Lowest Mean Temperature (F) | -6.9 | -1.6 | 14.9 | 34.9 | 50.2 | 58.1 | 65.1 | 63.0 | 49.3 | 40.2 | 17.1 | -1.8 | 38.3 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -4.6 | 2.0 | 16.9 | 32.3 | 43.9 | 53.7 | 58.0 | 55.5 | 45.7 | 33.8 | 19.5 | 2.6 | 29.9 |
| Highest Mean Min. Temperature (F) | 10.5 | 19.2 | 30.0 | 37.2 | 54.4 | 58.9 | 61.9 | 60.8 | 51.3 | 42.6 | 25.2 | 14.6 | 35.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1962 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -17.6 | -11.6 | 3.8 | 27.4 | 37.5 | 46.4 | 51.5 | 50.9 | 40.2 | 25.2 | 6.1 | -10.0 | 27.7 |
| Year Lowest Occurred | 1982 | 1979 | 1969 | 1961 | 1967 | 1982 | 1971 | 1977 | 1974 | 1976 | 1985 | 1983 | 1989 |
| Mean Precipitation (in.) | 0.56 | 0.47 | 1.08 | 2.17 | 2.44 | 3.75 | 3.14 | 2.62 | 2.32 | 1.69 | 0.71 | 0.49 | 21.44 |
| Highest Precipitation (in.) | 1.54 | 1.75 | 2.92 | 7.44 | 8.64 | 7.68 | 7.14 | 7.14 | 6.88 | 6.44 | 2.00 | 1.48 | 37.05 |
| Year Highest Occurred | 1969 | 1962 | 1989 | 1986 | 1962 | 1975 | 1962 | 1966 | 1986 | 1984 | 1985 | 1972 | 1962 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.11 | 0.10 | 0.50 | 0.77 | 0.57 | 0.25 | 0.08 | 0.10 | 0.00 | 0.00 | 8.47 |
| Year Lowest Occurred | 1983 | 1983 | 1961 | 1980 | 1964 | 1974 | 1968 | 1969 | 1979 | 1976 | 1982 | 1982 | 1976 |
| Heating Degree Days (F) | 1835. | 1478. | 1206. | 657. | 304. | 84. | 17. | 41. | 229. | 589. | 1083. | 1637. | 9160. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 34. | 102. | 197. | 153. | 19. | 0. | 0. | 0. | 505. |