| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 35.8 | 40.1 | 45.6 | 55.7 | 65.6 | 76.4 | 81.1 | 78.0 | 71.0 | 61.0 | 46.7 | 37.6 | 57.9 |
| Highest Mean Max. Temperature (F) | 44.5 | 46.4 | 56.8 | 63.7 | 71.6 | 82.1 | 84.2 | 81.3 | 76.0 | 67.5 | 53.4 | 46.5 | 61.0 |
| Year Highest Occurred | 1981 | 1970 | 1972 | 1989 | 1984 | 1974 | 1966 | 1962 | 1979 | 1964 | 1967 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 27.6 | 34.3 | 39.6 | 48.0 | 60.7 | 70.5 | 76.5 | 74.3 | 64.7 | 50.2 | 39.8 | 30.6 | 56.2 |
| Year Lowest Occurred | 1979 | 1966 | 1973 | 1983 | 1980 | 1965 | 1986 | 1968 | 1986 | 1984 | 1972 | 1978 | 1982 |
| Mean Temperature (F) | 22.0 | 26.3 | 32.4 | 40.8 | 49.4 | 58.7 | 65.1 | 62.6 | 55.4 | 45.6 | 33.3 | 24.5 | 43.0 |
| Highest Mean Temperature (F) | 31.2 | 32.5 | 40.4 | 47.2 | 54.5 | 63.5 | 67.8 | 65.2 | 59.7 | 51.4 | 38.1 | 33.5 | 45.2 |
| Year Highest Occurred | 1981 | 1970 | 1972 | 1989 | 1984 | 1974 | 1966 | 1970 | 1963 | 1963 | 1965 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 15.6 | 19.5 | 26.4 | 34.6 | 46.6 | 54.6 | 61.9 | 58.6 | 51.2 | 38.9 | 25.7 | 18.0 | 40.9 |
| Year Lowest Occurred | 1963 | 1966 | 1969 | 1983 | 1983 | 1965 | 1986 | 1968 | 1971 | 1984 | 1972 | 1978 | 1973 |
| Mean Min. Temperature (F) | 8.2 | 12.6 | 19.2 | 25.8 | 33.3 | 40.9 | 49.0 | 47.2 | 39.7 | 30.1 | 19.9 | 11.3 | 28.1 |
| Highest Mean Min. Temperature (F) | 17.9 | 20.8 | 25.4 | 30.7 | 37.3 | 45.4 | 51.3 | 50.6 | 44.9 | 36.9 | 25.7 | 20.4 | 30.8 |
| Year Highest Occurred | 1981 | 1986 | 1986 | 1989 | 1984 | 1988 | 1984 | 1983 | 1963 | 1963 | 1965 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | 1.4 | 4.7 | 12.4 | 20.5 | 30.2 | 36.4 | 46.1 | 42.8 | 33.0 | 25.1 | 11.5 | 4.4 | 25.6 |
| Year Lowest Occurred | 1963 | 1966 | 1969 | 1970 | 1968 | 1975 | 1973 | 1968 | 1971 | 1982 | 1972 | 1967 | 1973 |
| Mean Precipitation (in.) | 1.43 | 1.29 | 1.66 | 1.05 | 1.08 | 0.66 | 2.12 | 2.31 | 1.82 | 1.98 | 1.58 | 1.50 | 18.48 |
| Highest Precipitation (in.) | 6.36 | 4.04 | 3.59 | 2.65 | 2.74 | 2.33 | 5.23 | 5.21 | 5.03 | 9.04 | 4.25 | 4.39 | 27.87 |
| Year Highest Occurred | 1980 | 1980 | 1978 | 1986 | 1978 | 1969 | 1981 | 1971 | 1990 | 1972 | 1986 | 1966 | 1969 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.44 | 0.21 | 0.18 | 0.00 | 0.00 | 0.00 | 9.35 |
| Year Lowest Occurred | 1972 | 1972 | 1971 | 1989 | 1974 | 1974 | 1988 | 1962 | 1968 | 1964 | 1989 | 1989 | 1989 |
| Heating Degree Days (F) | 1333. | 1084. | 1011. | 726. | 484. | 202. | 42. | 92. | 292. | 601. | 951. | 1256. | 8074. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 13. | 45. | 17. | 0. | 0. | 0. | 0. | 75. |