| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.3 | 24.8 | 36.0 | 51.0 | 65.6 | 74.3 | 79.3 | 76.0 | 65.5 | 53.9 | 37.8 | 24.5 | 50.8 |
| Highest Mean Max. Temperature (F) | 31.1 | 33.7 | 43.7 | 59.5 | 76.1 | 81.0 | 84.4 | 81.8 | 69.9 | 67.9 | 44.3 | 30.9 | 54.5 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1966 | 1969 | 1989 | 1963 | 1975 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | 11.9 | 18.4 | 28.4 | 44.1 | 57.0 | 64.8 | 75.5 | 71.6 | 60.9 | 47.6 | 31.0 | 14.7 | 47.6 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1982 | 1983 | 1969 | 1972 | 1986 | 1974 | 1988 | 1985 | 1989 | 1985 |
| Mean Temperature (F) | 8.6 | 11.4 | 24.0 | 39.1 | 52.1 | 60.8 | 65.9 | 63.3 | 54.1 | 43.6 | 29.7 | 15.2 | 39.0 |
| Highest Mean Temperature (F) | 18.1 | 21.2 | 34.0 | 44.1 | 61.0 | 65.7 | 70.9 | 68.1 | 58.0 | 52.0 | 34.5 | 22.8 | 42.7 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1987 | 1983 | 1983 | 1978 | 1963 | 1963 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -0.4 | 4.0 | 17.3 | 33.4 | 45.9 | 54.3 | 61.4 | 59.0 | 49.7 | 38.2 | 22.4 | 5.0 | 36.7 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1972 | 1967 | 1969 | 1965 | 1964 | 1974 | 1988 | 1976 | 1983 | 1985 |
| Mean Min. Temperature (F) | -3.1 | -2.0 | 12.1 | 27.1 | 38.5 | 47.2 | 52.4 | 50.6 | 42.6 | 33.2 | 21.6 | 5.8 | 27.2 |
| Highest Mean Min. Temperature (F) | 5.8 | 11.7 | 24.3 | 31.9 | 45.9 | 51.8 | 58.3 | 56.1 | 48.2 | 43.1 | 26.9 | 15.7 | 30.8 |
| Year Highest Occurred | 1987 | 1984 | 1973 | 1986 | 1977 | 1987 | 1983 | 1983 | 1978 | 1971 | 1988 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.6 | -10.5 | 2.6 | 20.9 | 31.0 | 41.4 | 46.1 | 45.1 | 38.0 | 28.7 | 13.4 | -7.6 | 24.6 |
| Year Lowest Occurred | 1982 | 1979 | 1989 | 1975 | 1967 | 1982 | 1965 | 1967 | 1976 | 1988 | 1976 | 1976 | 1989 |
| Mean Precipitation (in.) | 1.13 | 0.86 | 1.71 | 2.35 | 3.22 | 3.49 | 3.24 | 3.78 | 3.88 | 2.61 | 1.91 | 1.50 | 29.68 |
| Highest Precipitation (in.) | 3.23 | 3.00 | 3.96 | 4.88 | 6.43 | 9.34 | 8.08 | 8.03 | 7.35 | 4.98 | 5.08 | 2.98 | 39.02 |
| Year Highest Occurred | 1969 | 1971 | 1979 | 1967 | 1965 | 1968 | 1964 | 1972 | 1985 | 1979 | 1985 | 1968 | 1985 |
| Lowest Precipitation (in.) | 0.09 | 0.07 | 0.35 | 0.76 | 0.48 | 0.90 | 0.92 | 0.31 | 0.81 | 0.40 | 0.33 | 0.43 | 19.59 |
| Year Lowest Occurred | 1961 | 1982 | 1978 | 1971 | 1986 | 1970 | 1989 | 1969 | 1979 | 1964 | 1981 | 1974 | 1963 |
| Heating Degree Days (F) | 1748. | 1501. | 1271. | 777. | 414. | 159. | 64. | 106. | 327. | 663. | 1059. | 1544. | 9633. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 14. | 33. | 92. | 53. | 0. | 0. | 0. | 0. | 192. |