| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.4 | 27.8 | 39.7 | 56.2 | 70.2 | 79.4 | 83.2 | 80.2 | 71.8 | 60.3 | 42.4 | 26.4 | 55.0 |
| Highest Mean Max. Temperature (F) | 37.7 | 45.2 | 52.0 | 66.7 | 79.4 | 86.9 | 87.8 | 87.4 | 78.8 | 70.7 | 48.7 | 36.0 | 60.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1966 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.3 | 14.6 | 26.9 | 47.3 | 65.6 | 73.0 | 77.8 | 76.7 | 61.7 | 53.9 | 31.2 | 9.4 | 51.4 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1983 | 1982 | 1962 | 1987 | 1965 | 1980 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 12.6 | 17.6 | 30.0 | 44.8 | 58.1 | 67.8 | 71.9 | 68.9 | 59.6 | 48.1 | 32.8 | 17.7 | 44.2 |
| Highest Mean Temperature (F) | 26.7 | 32.0 | 38.1 | 51.8 | 66.0 | 73.1 | 76.0 | 75.1 | 65.9 | 57.9 | 38.3 | 28.7 | 48.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1966 | 1983 | 1978 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 0.1 | 4.7 | 17.4 | 39.1 | 52.9 | 61.5 | 67.5 | 65.2 | 52.7 | 42.7 | 22.3 | 1.0 | 41.0 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1983 | 1968 | 1969 | 1971 | 1986 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 2.8 | 7.4 | 20.3 | 33.3 | 46.0 | 56.1 | 60.5 | 57.5 | 47.4 | 35.9 | 23.1 | 8.9 | 33.3 |
| Highest Mean Min. Temperature (F) | 15.6 | 19.3 | 30.7 | 38.6 | 53.1 | 60.5 | 64.7 | 62.8 | 52.9 | 45.1 | 29.9 | 21.3 | 37.7 |
| Year Highest Occurred | 1990 | 1976 | 1973 | 1977 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.6 | -5.2 | 7.8 | 28.5 | 39.9 | 49.9 | 56.3 | 52.9 | 41.9 | 30.9 | 13.4 | -7.4 | 30.6 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1961 | 1967 | 1969 | 1971 | 1986 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.71 | 0.77 | 1.85 | 2.81 | 3.32 | 4.06 | 3.49 | 3.65 | 3.33 | 2.00 | 1.20 | 0.73 | 27.92 |
| Highest Precipitation (in.) | 2.84 | 3.41 | 4.32 | 7.67 | 9.07 | 9.39 | 10.50 | 8.44 | 8.05 | 6.60 | 5.34 | 1.96 | 37.40 |
| Year Highest Occurred | 1975 | 1971 | 1961 | 1975 | 1965 | 1984 | 1987 | 1980 | 1964 | 1971 | 1975 | 1973 | 1964 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.03 | 0.62 | 1.16 | 1.42 | 0.33 | 0.93 | 0.24 | 0.12 | 0.02 | 0.04 | 18.54 |
| Year Lowest Occurred | 1988 | 1988 | 1968 | 1980 | 1989 | 1988 | 1975 | 1963 | 1984 | 1989 | 1966 | 1989 | 1988 |
| Heating Degree Days (F) | 1624. | 1327. | 1085. | 606. | 252. | 43. | 6. | 29. | 182. | 524. | 966. | 1466. | 8110. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 39. | 127. | 220. | 150. | 20. | 0. | 0. | 0. | 556. |