| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.6 | 28.3 | 40.7 | 56.9 | 69.7 | 79.0 | 83.3 | 80.4 | 71.2 | 59.8 | 42.8 | 27.1 | 55.2 |
| Highest Mean Max. Temperature (F) | 34.3 | 39.3 | 51.2 | 66.3 | 78.5 | 84.9 | 87.3 | 85.4 | 77.7 | 70.0 | 49.9 | 35.5 | 58.7 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1990 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.4 | 20.3 | 30.3 | 49.2 | 64.0 | 71.2 | 79.5 | 76.6 | 64.1 | 54.0 | 35.5 | 14.8 | 52.6 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1985 | 1965 | 1987 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 13.0 | 18.0 | 31.4 | 46.8 | 58.7 | 68.4 | 72.9 | 70.3 | 60.8 | 49.9 | 34.3 | 19.0 | 45.3 |
| Highest Mean Temperature (F) | 26.2 | 30.1 | 39.9 | 54.1 | 66.7 | 73.1 | 76.2 | 75.1 | 65.4 | 61.0 | 41.4 | 29.2 | 49.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1988 | 1983 | 1990 | 1963 | 1990 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 0.7 | 7.4 | 22.3 | 39.7 | 53.6 | 62.0 | 68.8 | 66.7 | 56.0 | 44.4 | 27.6 | 5.4 | 42.1 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1988 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 3.3 | 7.6 | 22.0 | 36.5 | 47.6 | 57.8 | 62.5 | 60.1 | 50.4 | 39.9 | 25.7 | 10.9 | 35.4 |
| Highest Mean Min. Temperature (F) | 18.1 | 20.9 | 30.8 | 42.9 | 54.9 | 62.2 | 67.0 | 64.8 | 56.8 | 51.9 | 32.9 | 22.8 | 40.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1971 | 1987 | 1983 | 1990 | 1963 | 1990 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -9.4 | -5.5 | 14.3 | 30.1 | 41.9 | 51.6 | 58.0 | 56.5 | 44.0 | 34.6 | 19.0 | -4.1 | 31.2 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1974 | 1982 | 1971 | 1977 | 1974 | 1988 | 1978 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.89 | 0.64 | 1.81 | 2.90 | 3.70 | 4.29 | 4.67 | 3.92 | 4.02 | 2.60 | 1.74 | 1.08 | 32.26 |
| Highest Precipitation (in.) | 3.35 | 1.50 | 3.66 | 5.64 | 7.34 | 10.90 | 12.75 | 9.11 | 10.68 | 6.23 | 5.32 | 2.40 | 44.37 |
| Year Highest Occurred | 1967 | 1971 | 1976 | 1973 | 1970 | 1967 | 1978 | 1980 | 1986 | 1979 | 1975 | 1968 | 1968 |
| Lowest Precipitation (in.) | 0.08 | 0.01 | 0.46 | 0.73 | 1.53 | 0.89 | 0.68 | 0.30 | 0.25 | 0.29 | 0.00 | 0.00 | 16.93 |
| Year Lowest Occurred | 1981 | 1970 | 1981 | 1971 | 1966 | 1964 | 1980 | 1971 | 1979 | 1976 | 1976 | 1989 | 1976 |
| Heating Degree Days (F) | 1612. | 1316. | 1042. | 546. | 237. | 36. | 6. | 14. | 147. | 473. | 921. | 1426. | 7776. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 41. | 138. | 251. | 178. | 21. | 5. | 0. | 0. | 634. |