| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.7 | 24.1 | 35.9 | 50.0 | 64.2 | 72.9 | 78.3 | 75.0 | 65.5 | 54.6 | 37.7 | 24.0 | 50.2 |
| Highest Mean Max. Temperature (F) | 31.0 | 34.3 | 43.7 | 59.3 | 73.3 | 78.1 | 83.0 | 81.7 | 69.1 | 67.6 | 44.1 | 31.5 | 54.2 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1975 | 1974 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.6 | 15.1 | 29.0 | 44.1 | 55.9 | 64.7 | 74.0 | 65.9 | 58.9 | 47.5 | 32.1 | 14.7 | 47.3 |
| Year Lowest Occurred | 1963 | 1963 | 1965 | 1975 | 1973 | 1969 | 1971 | 1963 | 1965 | 1987 | 1989 | 1989 | 1972 |
| Mean Temperature (F) | 9.0 | 11.3 | 22.9 | 37.6 | 50.5 | 59.8 | 65.2 | 62.4 | 53.8 | 44.0 | 29.6 | 15.2 | 38.4 |
| Highest Mean Temperature (F) | 20.0 | 23.7 | 31.9 | 43.1 | 56.7 | 64.3 | 69.3 | 67.7 | 58.2 | 54.2 | 35.6 | 22.8 | 42.3 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1971 | 1966 | 1983 | 1978 | 1963 | 1963 | 1982 | 1987 |
| Lowest Mean Temperature (F) | -1.1 | 3.3 | 15.0 | 30.0 | 45.1 | 53.9 | 61.5 | 57.1 | 47.8 | 37.9 | 22.7 | 5.7 | 35.2 |
| Year Lowest Occurred | 1977 | 1979 | 1972 | 1975 | 1973 | 1969 | 1971 | 1977 | 1974 | 1987 | 1976 | 1989 | 1972 |
| Mean Min. Temperature (F) | -1.7 | -1.5 | 9.8 | 25.2 | 36.9 | 46.6 | 52.0 | 49.6 | 42.0 | 33.3 | 21.4 | 6.4 | 26.7 |
| Highest Mean Min. Temperature (F) | 8.9 | 13.1 | 21.6 | 30.7 | 44.7 | 50.4 | 55.7 | 53.9 | 47.3 | 40.8 | 27.2 | 16.5 | 30.3 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1962 | 1971 | 1966 | 1988 | 1978 | 1963 | 1963 | 1982 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.9 | -10.3 | -0.4 | 15.9 | 31.6 | 41.2 | 48.3 | 44.3 | 35.7 | 27.6 | 13.2 | -3.6 | 23.1 |
| Year Lowest Occurred | 1977 | 1979 | 1972 | 1975 | 1967 | 1982 | 1985 | 1977 | 1976 | 1976 | 1976 | 1983 | 1972 |
| Mean Precipitation (in.) | 2.52 | 1.61 | 2.25 | 2.45 | 3.67 | 3.92 | 3.37 | 4.10 | 3.81 | 3.40 | 3.25 | 2.80 | 37.15 |
| Highest Precipitation (in.) | 4.59 | 4.03 | 4.85 | 5.66 | 9.37 | 7.23 | 6.25 | 8.57 | 7.04 | 6.63 | 6.77 | 6.45 | 47.25 |
| Year Highest Occurred | 1969 | 1971 | 1976 | 1982 | 1964 | 1968 | 1980 | 1988 | 1968 | 1981 | 1975 | 1968 | 1985 |
| Lowest Precipitation (in.) | 1.08 | 0.63 | 0.47 | 0.62 | 0.87 | 1.46 | 0.67 | 0.67 | 1.23 | 1.11 | 1.01 | 0.66 | 28.70 |
| Year Lowest Occurred | 1965 | 1987 | 1962 | 1988 | 1966 | 1978 | 1975 | 1976 | 1989 | 1963 | 1984 | 1967 | 1987 |
| Heating Degree Days (F) | 1736. | 1504. | 1305. | 822. | 462. | 179. | 70. | 135. | 336. | 651. | 1062. | 1544. | 9806. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 12. | 23. | 77. | 54. | 0. | 0. | 0. | 0. | 166. |