| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 31.1 | 33.3 | 42.9 | 55.8 | 67.1 | 74.7 | 79.6 | 77.8 | 70.8 | 60.2 | 47.7 | 35.7 | 56.4 |
| Highest Mean Max. Temperature (F) | 40.1 | 45.9 | 51.1 | 62.8 | 75.0 | 79.7 | 86.4 | 83.1 | 79.6 | 71.1 | 55.1 | 42.6 | 59.1 |
| Year Highest Occurred | 1990 | 1976 | 1976 | 1968 | 1965 | 1966 | 1966 | 1980 | 1980 | 1963 | 1964 | 1990 | 1964 |
| Lowest Mean Max. Temperature (F) | 22.1 | 25.1 | 36.7 | 48.4 | 59.6 | 68.2 | 75.4 | 74.0 | 66.8 | 53.5 | 42.0 | 24.2 | 54.3 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1975 | 1967 | 1972 | 1975 | 1967 | 1975 | 1988 | 1976 | 1989 | 1972 |
| Mean Temperature (F) | 21.6 | 23.5 | 33.2 | 45.1 | 56.2 | 64.4 | 69.3 | 67.5 | 60.2 | 49.7 | 39.0 | 27.1 | 46.4 |
| Highest Mean Temperature (F) | 30.8 | 33.1 | 38.8 | 49.9 | 61.1 | 67.5 | 72.8 | 73.4 | 66.9 | 57.2 | 44.9 | 33.6 | 48.7 |
| Year Highest Occurred | 1990 | 1981 | 1977 | 1968 | 1980 | 1973 | 1980 | 1980 | 1961 | 1963 | 1975 | 1982 | 1990 |
| Lowest Mean Temperature (F) | 12.1 | 16.3 | 26.7 | 39.0 | 48.0 | 61.2 | 65.7 | 64.9 | 56.9 | 42.4 | 34.7 | 14.8 | 44.7 |
| Year Lowest Occurred | 1982 | 1978 | 1984 | 1975 | 1967 | 1985 | 1979 | 1972 | 1984 | 1976 | 1967 | 1989 | 1967 |
| Mean Min. Temperature (F) | 12.1 | 13.6 | 23.4 | 34.3 | 45.1 | 54.0 | 59.0 | 57.1 | 49.6 | 39.1 | 30.2 | 18.4 | 36.3 |
| Highest Mean Min. Temperature (F) | 21.5 | 25.2 | 29.8 | 39.1 | 50.6 | 58.4 | 63.8 | 63.7 | 55.2 | 46.2 | 36.4 | 25.2 | 38.7 |
| Year Highest Occurred | 1990 | 1981 | 1979 | 1981 | 1980 | 1976 | 1972 | 1980 | 1961 | 1971 | 1982 | 1982 | 1990 |
| Lowest Mean Min. Temperature (F) | 2.1 | 5.8 | 16.6 | 29.3 | 36.4 | 50.4 | 52.9 | 52.7 | 45.3 | 31.0 | 25.6 | 5.4 | 33.9 |
| Year Lowest Occurred | 1982 | 1978 | 1984 | 1982 | 1967 | 1969 | 1979 | 1964 | 1984 | 1976 | 1965 | 1989 | 1965 |
| Mean Precipitation (in.) | 2.86 | 2.16 | 3.27 | 3.77 | 4.44 | 4.13 | 3.86 | 3.84 | 3.91 | 3.22 | 4.11 | 3.19 | 42.76 |
| Highest Precipitation (in.) | 8.30 | 4.58 | 7.94 | 11.62 | 11.85 | 11.17 | 9.24 | 6.85 | 9.35 | 6.91 | 10.13 | 6.35 | 59.38 |
| Year Highest Occurred | 1979 | 1986 | 1983 | 1983 | 1989 | 1972 | 1984 | 1990 | 1987 | 1976 | 1972 | 1969 | 1983 |
| Lowest Precipitation (in.) | 0.32 | 0.17 | 0.34 | 1.33 | 0.86 | 0.29 | 0.75 | 0.54 | 0.75 | 0.06 | 1.40 | 0.03 | 27.16 |
| Year Lowest Occurred | 1989 | 1988 | 1981 | 1988 | 1962 | 1990 | 1968 | 1964 | 1984 | 1963 | 1981 | 1988 | 1964 |
| Heating Degree Days (F) | 1345. | 1162. | 986. | 597. | 288. | 64. | 13. | 30. | 166. | 474. | 780. | 1175. | 7080. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 15. | 46. | 146. | 107. | 22. | 0. | 0. | 0. | 336. |