| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.3 | 26.4 | 37.7 | 52.7 | 66.5 | 73.7 | 78.4 | 75.6 | 66.5 | 55.3 | 38.0 | 24.5 | 51.4 |
| Highest Mean Max. Temperature (F) | 32.7 | 36.5 | 46.2 | 63.3 | 76.8 | 80.2 | 83.5 | 81.3 | 70.8 | 68.9 | 44.3 | 30.7 | 55.9 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1976 | 1976 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 12.2 | 19.5 | 30.0 | 46.1 | 59.5 | 64.1 | 72.0 | 70.5 | 59.9 | 48.3 | 31.1 | 15.1 | 48.5 |
| Year Lowest Occurred | 1977 | 1963 | 1965 | 1975 | 1973 | 1969 | 1967 | 1977 | 1965 | 1980 | 1976 | 1983 | 1972 |
| Mean Temperature (F) | 11.6 | 15.3 | 26.4 | 40.6 | 52.9 | 61.0 | 66.2 | 64.0 | 55.7 | 45.2 | 30.5 | 16.4 | 40.5 |
| Highest Mean Temperature (F) | 23.3 | 26.1 | 34.8 | 47.9 | 62.2 | 65.4 | 70.3 | 68.9 | 59.9 | 56.2 | 36.4 | 23.6 | 44.6 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1987 | 1983 | 1983 | 1978 | 1963 | 1963 | 1987 | 1987 |
| Lowest Mean Temperature (F) | 2.8 | 7.6 | 18.9 | 34.1 | 46.0 | 53.7 | 61.9 | 59.7 | 50.6 | 39.2 | 22.9 | 6.7 | 37.8 |
| Year Lowest Occurred | 1982 | 1963 | 1965 | 1975 | 1967 | 1969 | 1967 | 1977 | 1974 | 1980 | 1976 | 1989 | 1972 |
| Mean Min. Temperature (F) | 1.9 | 4.2 | 15.0 | 28.4 | 39.3 | 48.4 | 54.0 | 52.4 | 44.9 | 35.0 | 22.9 | 8.3 | 29.6 |
| Highest Mean Min. Temperature (F) | 13.8 | 17.8 | 25.9 | 33.7 | 47.5 | 51.8 | 58.8 | 57.5 | 50.3 | 43.9 | 28.6 | 17.0 | 33.2 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1977 | 1987 | 1983 | 1983 | 1978 | 1971 | 1963 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.4 | -4.3 | 7.5 | 22.0 | 31.6 | 42.5 | 50.1 | 48.0 | 39.8 | 28.3 | 14.7 | -2.5 | 27.0 |
| Year Lowest Occurred | 1982 | 1963 | 1984 | 1975 | 1967 | 1982 | 1969 | 1967 | 1974 | 1976 | 1976 | 1976 | 1972 |
| Mean Precipitation (in.) | 1.35 | 1.19 | 1.89 | 2.36 | 3.52 | 4.00 | 3.36 | 4.21 | 3.92 | 3.18 | 2.35 | 1.67 | 33.00 |
| Highest Precipitation (in.) | 3.23 | 3.30 | 4.22 | 4.54 | 8.54 | 8.13 | 9.06 | 10.73 | 7.11 | 5.65 | 4.97 | 3.55 | 41.90 |
| Year Highest Occurred | 1967 | 1971 | 1977 | 1982 | 1970 | 1981 | 1982 | 1978 | 1985 | 1979 | 1975 | 1968 | 1982 |
| Lowest Precipitation (in.) | 0.37 | 0.25 | 0.50 | 1.01 | 0.22 | 1.55 | 1.06 | 0.67 | 0.55 | 0.82 | 0.52 | 0.49 | 21.29 |
| Year Lowest Occurred | 1961 | 1969 | 1980 | 1989 | 1986 | 1970 | 1964 | 1976 | 1976 | 1964 | 1981 | 1986 | 1976 |
| Heating Degree Days (F) | 1655. | 1392. | 1197. | 732. | 395. | 156. | 62. | 94. | 282. | 614. | 1035. | 1507. | 9121. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 20. | 36. | 99. | 63. | 0. | 0. | 0. | 0. | 218. |