| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.9 | 27.6 | 40.1 | 58.2 | 72.0 | 80.1 | 84.1 | 81.4 | 72.2 | 60.3 | 41.8 | 26.4 | 55.5 |
| Highest Mean Max. Temperature (F) | 36.6 | 40.8 | 51.3 | 68.1 | 81.8 | 89.2 | 90.2 | 87.7 | 77.9 | 70.9 | 48.4 | 34.6 | 60.2 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1988 | 1988 | 1983 | 1978 | 1963 | 1963 | 1982 | 1987 |
| Lowest Mean Max. Temperature (F) | 9.0 | 17.8 | 28.4 | 46.9 | 65.8 | 72.3 | 78.1 | 76.4 | 62.5 | 54.5 | 33.8 | 12.0 | 51.8 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1985 | 1965 | 1972 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 12.1 | 18.0 | 30.9 | 46.9 | 59.6 | 68.4 | 72.4 | 69.6 | 60.7 | 49.5 | 33.4 | 17.8 | 44.9 |
| Highest Mean Temperature (F) | 27.6 | 31.0 | 39.6 | 53.6 | 67.2 | 75.3 | 77.1 | 75.1 | 65.9 | 59.5 | 39.7 | 28.1 | 49.6 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -1.8 | 7.5 | 19.4 | 38.9 | 53.7 | 61.9 | 67.0 | 66.0 | 54.3 | 43.7 | 25.6 | 2.3 | 41.4 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1976 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | 2.2 | 8.3 | 21.6 | 35.6 | 47.2 | 56.6 | 60.6 | 57.8 | 49.1 | 38.5 | 25.0 | 9.1 | 34.3 |
| Highest Mean Min. Temperature (F) | 18.6 | 21.2 | 30.6 | 40.6 | 54.2 | 61.3 | 63.9 | 62.6 | 53.9 | 48.1 | 31.1 | 21.8 | 39.0 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1985 | 1977 | 1988 | 1988 | 1988 | 1978 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.5 | -2.8 | 10.4 | 30.9 | 41.6 | 51.1 | 54.7 | 52.2 | 43.9 | 31.7 | 15.3 | -7.4 | 30.9 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1982 | 1971 | 1971 | 1974 | 1976 | 1976 | 1983 | 1972 |
| Mean Precipitation (in.) | 0.82 | 0.88 | 1.99 | 2.69 | 3.62 | 3.94 | 3.72 | 3.81 | 3.19 | 2.31 | 1.64 | 1.16 | 29.77 |
| Highest Precipitation (in.) | 3.06 | 2.82 | 4.46 | 6.22 | 6.67 | 10.00 | 8.50 | 6.92 | 8.12 | 5.91 | 4.89 | 4.92 | 40.11 |
| Year Highest Occurred | 1967 | 1971 | 1965 | 1986 | 1970 | 1967 | 1987 | 1980 | 1986 | 1968 | 1983 | 1982 | 1965 |
| Lowest Precipitation (in.) | 0.09 | 0.00 | 0.33 | 0.29 | 0.74 | 0.30 | 1.63 | 0.75 | 0.35 | 0.25 | 0.03 | 0.08 | 15.73 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1987 | 1976 | 1988 | 1988 | 1968 | 1969 | 1965 | 1967 | 1989 | 1976 |
| Heating Degree Days (F) | 1640. | 1316. | 1057. | 543. | 218. | 35. | 11. | 20. | 154. | 481. | 948. | 1463. | 7886. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 51. | 137. | 240. | 163. | 25. | 0. | 0. | 0. | 616. |