| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.1 | 25.0 | 36.8 | 51.4 | 65.2 | 73.8 | 79.2 | 76.0 | 66.3 | 55.2 | 38.1 | 23.3 | 50.8 |
| Highest Mean Max. Temperature (F) | 32.0 | 38.0 | 45.9 | 64.0 | 76.1 | 80.5 | 85.5 | 81.2 | 70.9 | 68.3 | 44.4 | 29.5 | 56.4 |
| Year Highest Occurred | 1990 | 1987 | 1987 | 1987 | 1977 | 1988 | 1988 | 1983 | 1987 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.5 | 17.2 | 28.7 | 43.7 | 57.6 | 64.0 | 74.3 | 70.3 | 58.8 | 49.3 | 31.2 | 14.5 | 47.5 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1970 | 1969 | 1978 | 1977 | 1965 | 1969 | 1976 | 1983 | 1979 |
| Mean Temperature (F) | 7.5 | 12.1 | 25.2 | 39.9 | 52.4 | 61.3 | 67.0 | 64.2 | 55.0 | 44.7 | 29.8 | 13.8 | 39.4 |
| Highest Mean Temperature (F) | 19.4 | 26.2 | 34.2 | 46.9 | 62.0 | 65.9 | 70.7 | 69.3 | 58.1 | 55.5 | 36.0 | 22.0 | 44.2 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1976 | 1983 | 1983 | 1963 | 1963 | 1981 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -3.7 | 4.0 | 16.3 | 32.4 | 46.6 | 54.2 | 63.6 | 59.0 | 48.9 | 37.9 | 21.9 | 2.6 | 36.8 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1965 | 1977 | 1974 | 1976 | 1976 | 1976 | 1979 |
| Mean Min. Temperature (F) | -4.1 | -0.8 | 13.6 | 28.2 | 39.6 | 48.7 | 54.8 | 52.4 | 43.8 | 34.3 | 21.5 | 4.3 | 28.0 |
| Highest Mean Min. Temperature (F) | 6.7 | 16.8 | 24.9 | 32.8 | 47.9 | 53.0 | 59.2 | 57.4 | 47.3 | 42.6 | 27.6 | 15.1 | 32.0 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1977 | 1976 | 1975 | 1984 | 1961 | 1963 | 1981 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -16.2 | -10.3 | 3.8 | 21.0 | 32.6 | 44.0 | 50.1 | 47.7 | 38.4 | 26.3 | 12.5 | -10.2 | 24.6 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1990 | 1982 | 1990 | 1977 | 1974 | 1976 | 1976 | 1976 | 1989 |
| Mean Precipitation (in.) | 1.44 | 0.97 | 1.97 | 2.29 | 3.45 | 3.62 | 3.78 | 4.04 | 3.96 | 3.04 | 2.51 | 1.74 | 32.81 |
| Highest Precipitation (in.) | 3.39 | 2.27 | 4.74 | 4.38 | 6.87 | 6.70 | 7.48 | 8.08 | 7.01 | 6.47 | 7.36 | 4.68 | 43.53 |
| Year Highest Occurred | 1969 | 1981 | 1976 | 1985 | 1964 | 1981 | 1972 | 1977 | 1990 | 1982 | 1975 | 1968 | 1977 |
| Lowest Precipitation (in.) | 0.15 | 0.16 | 0.35 | 0.42 | 1.03 | 1.26 | 0.95 | 1.35 | 1.13 | 1.06 | 0.57 | 0.57 | 22.15 |
| Year Lowest Occurred | 1961 | 1969 | 1969 | 1988 | 1990 | 1970 | 1976 | 1982 | 1976 | 1963 | 1981 | 1967 | 1976 |
| Heating Degree Days (F) | 1783. | 1481. | 1234. | 753. | 409. | 148. | 41. | 94. | 300. | 629. | 1056. | 1587. | 9515. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 37. | 103. | 70. | 0. | 0. | 0. | 0. | 229. |