| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.6 | 27.1 | 39.5 | 56.5 | 70.1 | 78.3 | 83.0 | 80.0 | 70.0 | 58.2 | 39.8 | 24.4 | 54.0 |
| Highest Mean Max. Temperature (F) | 33.5 | 39.1 | 49.4 | 67.6 | 79.5 | 87.3 | 90.7 | 85.4 | 76.4 | 68.5 | 46.7 | 30.9 | 59.2 |
| Year Highest Occurred | 1990 | 1987 | 1987 | 1987 | 1977 | 1988 | 1988 | 1969 | 1978 | 1963 | 1990 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.2 | 19.9 | 30.7 | 48.3 | 63.8 | 70.2 | 78.6 | 75.7 | 60.7 | 52.7 | 31.9 | 12.8 | 51.1 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1977 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 10.1 | 15.6 | 28.7 | 44.5 | 57.4 | 66.2 | 71.3 | 68.3 | 58.9 | 47.5 | 31.6 | 15.8 | 43.0 |
| Highest Mean Temperature (F) | 23.2 | 27.4 | 38.6 | 51.7 | 66.0 | 71.5 | 75.8 | 73.8 | 64.4 | 57.5 | 37.7 | 24.2 | 46.5 |
| Year Highest Occurred | 1990 | 1987 | 1977 | 1977 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 0.4 | 7.3 | 19.1 | 38.2 | 51.1 | 59.4 | 67.3 | 64.5 | 52.2 | 41.0 | 23.7 | 4.1 | 40.1 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -0.3 | 4.1 | 17.8 | 32.4 | 44.6 | 54.0 | 59.6 | 56.6 | 47.7 | 36.8 | 23.3 | 7.1 | 32.0 |
| Highest Mean Min. Temperature (F) | 12.8 | 18.2 | 31.7 | 39.0 | 52.4 | 58.5 | 63.6 | 63.1 | 52.4 | 46.5 | 28.9 | 17.4 | 34.8 |
| Year Highest Occurred | 1990 | 1983 | 1977 | 1977 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1990 |
| Lowest Mean Min. Temperature (F) | -10.8 | -7.4 | 7.4 | 28.0 | 38.3 | 48.6 | 55.8 | 51.1 | 41.4 | 28.6 | 13.1 | -4.6 | 27.0 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1989 | 1989 | 1988 | 1989 | 1983 | 1989 |
| Mean Precipitation (in.) | 1.12 | 0.89 | 1.91 | 2.81 | 3.41 | 4.38 | 4.06 | 4.44 | 4.25 | 2.69 | 1.77 | 1.40 | 33.13 |
| Highest Precipitation (in.) | 3.38 | 3.03 | 4.89 | 5.59 | 8.04 | 11.28 | 8.68 | 9.99 | 9.25 | 7.18 | 5.82 | 3.44 | 48.67 |
| Year Highest Occurred | 1967 | 1981 | 1977 | 1977 | 1962 | 1968 | 1987 | 1962 | 1985 | 1970 | 1975 | 1965 | 1968 |
| Lowest Precipitation (in.) | 0.00 | 0.04 | 0.24 | 0.00 | 0.47 | 1.64 | 1.07 | 0.70 | 0.76 | 0.53 | 0.19 | 0.29 | 18.92 |
| Year Lowest Occurred | 1981 | 1969 | 1969 | 1987 | 1976 | 1964 | 1988 | 1969 | 1966 | 1976 | 1967 | 1989 | 1976 |
| Heating Degree Days (F) | 1702. | 1383. | 1125. | 615. | 274. | 65. | 12. | 33. | 195. | 543. | 1002. | 1525. | 8474. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 38. | 101. | 207. | 136. | 12. | 0. | 0. | 0. | 494. |