| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.0 | 24.7 | 36.1 | 52.0 | 65.4 | 73.8 | 79.3 | 76.2 | 66.7 | 55.1 | 38.4 | 23.6 | 50.9 |
| Highest Mean Max. Temperature (F) | 29.9 | 34.9 | 44.9 | 60.7 | 76.5 | 80.5 | 84.7 | 81.4 | 71.5 | 66.4 | 45.7 | 30.8 | 54.9 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.6 | 17.0 | 28.1 | 44.8 | 58.8 | 64.8 | 74.7 | 72.0 | 60.0 | 48.3 | 33.3 | 14.2 | 48.4 |
| Year Lowest Occurred | 1963 | 1989 | 1965 | 1975 | 1973 | 1969 | 1978 | 1986 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 8.7 | 13.0 | 25.8 | 41.4 | 53.5 | 62.6 | 68.0 | 65.0 | 55.5 | 44.5 | 29.9 | 14.9 | 40.2 |
| Highest Mean Temperature (F) | 19.9 | 24.7 | 35.8 | 47.3 | 62.4 | 66.9 | 71.8 | 70.1 | 59.9 | 54.7 | 35.2 | 23.2 | 44.2 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1975 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -1.5 | 4.2 | 18.5 | 35.1 | 46.8 | 55.2 | 64.1 | 61.0 | 50.4 | 38.3 | 22.0 | 4.7 | 37.7 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1974 | 1987 | 1976 | 1989 | 1972 |
| Mean Min. Temperature (F) | -1.6 | 1.2 | 15.6 | 30.8 | 41.6 | 51.3 | 56.6 | 53.8 | 44.3 | 34.0 | 21.3 | 6.1 | 29.6 |
| Highest Mean Min. Temperature (F) | 9.9 | 15.9 | 27.2 | 35.7 | 48.3 | 55.5 | 60.2 | 58.7 | 49.4 | 43.0 | 26.4 | 16.7 | 33.4 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1977 | 1971 | 1983 | 1983 | 1990 | 1963 | 1963 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -14.5 | -8.6 | 6.9 | 25.3 | 34.1 | 45.5 | 52.9 | 49.5 | 38.1 | 27.2 | 10.6 | -6.6 | 26.6 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1967 | 1969 | 1971 | 1977 | 1974 | 1976 | 1976 | 1985 | 1976 |
| Mean Precipitation (in.) | 1.08 | 0.90 | 1.84 | 2.48 | 3.40 | 4.17 | 3.71 | 4.28 | 4.48 | 2.37 | 1.81 | 1.41 | 31.93 |
| Highest Precipitation (in.) | 3.29 | 3.03 | 3.64 | 4.69 | 7.49 | 10.37 | 9.20 | 8.44 | 10.36 | 5.56 | 4.14 | 3.28 | 45.54 |
| Year Highest Occurred | 1969 | 1971 | 1977 | 1977 | 1968 | 1980 | 1972 | 1980 | 1986 | 1979 | 1983 | 1972 | 1982 |
| Lowest Precipitation (in.) | 0.08 | 0.05 | 0.18 | 0.84 | 0.65 | 1.04 | 1.47 | 0.53 | 0.67 | 0.27 | 0.19 | 0.39 | 19.27 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1987 | 1986 | 1983 | 1974 | 1970 | 1979 | 1976 | 1967 | 1989 | 1976 |
| Heating Degree Days (F) | 1745. | 1456. | 1215. | 708. | 376. | 120. | 29. | 73. | 288. | 636. | 1053. | 1553. | 9252. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 48. | 122. | 73. | 0. | 0. | 0. | 0. | 262. |