| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 21.9 | 27.2 | 38.6 | 52.4 | 65.2 | 73.8 | 79.0 | 76.0 | 66.9 | 56.5 | 40.2 | 25.9 | 52.0 |
| Highest Mean Max. Temperature (F) | 33.6 | 43.8 | 48.3 | 61.8 | 76.9 | 79.5 | 84.0 | 82.6 | 70.2 | 68.8 | 47.1 | 35.2 | 57.1 |
| Year Highest Occurred | 1987 | 1987 | 1987 | 1987 | 1977 | 1976 | 1966 | 1983 | 1976 | 1963 | 1981 | 1986 | 1987 |
| Lowest Mean Max. Temperature (F) | 12.4 | 18.8 | 29.1 | 44.9 | 58.3 | 65.4 | 73.6 | 71.8 | 61.5 | 48.6 | 33.1 | 14.8 | 48.1 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1972 | 1979 | 1969 | 1990 | 1977 | 1965 | 1988 | 1989 | 1989 | 1972 |
| Mean Temperature (F) | 11.8 | 15.9 | 27.7 | 41.0 | 52.6 | 61.3 | 67.1 | 64.7 | 56.3 | 46.5 | 32.3 | 17.3 | 41.2 |
| Highest Mean Temperature (F) | 24.7 | 31.4 | 35.7 | 47.4 | 62.1 | 65.6 | 72.5 | 71.0 | 60.2 | 57.2 | 38.1 | 25.8 | 46.1 |
| Year Highest Occurred | 1987 | 1987 | 1987 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1982 | 1987 |
| Lowest Mean Temperature (F) | 2.5 | 7.7 | 18.9 | 34.5 | 46.4 | 54.9 | 62.4 | 60.4 | 51.1 | 40.0 | 25.8 | 5.7 | 37.4 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1972 | 1967 | 1969 | 1990 | 1977 | 1974 | 1988 | 1976 | 1989 | 1972 |
| Mean Min. Temperature (F) | 1.7 | 4.5 | 16.7 | 29.6 | 39.9 | 48.8 | 55.1 | 53.4 | 45.7 | 36.5 | 24.3 | 8.7 | 30.4 |
| Highest Mean Min. Temperature (F) | 15.7 | 19.0 | 24.6 | 33.7 | 47.3 | 52.1 | 61.1 | 59.3 | 50.5 | 45.6 | 29.1 | 18.8 | 35.1 |
| Year Highest Occurred | 1987 | 1987 | 1973 | 1976 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1981 | 1982 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.3 | -4.6 | 8.7 | 23.3 | 34.1 | 42.9 | 50.8 | 48.8 | 39.5 | 29.3 | 17.2 | -3.4 | 26.6 |
| Year Lowest Occurred | 1977 | 1965 | 1965 | 1975 | 1967 | 1982 | 1985 | 1986 | 1974 | 1976 | 1976 | 1989 | 1972 |
| Mean Precipitation (in.) | 1.77 | 1.24 | 1.97 | 2.14 | 3.28 | 3.91 | 3.90 | 4.29 | 4.29 | 3.37 | 2.52 | 1.95 | 34.63 |
| Highest Precipitation (in.) | 4.21 | 3.13 | 4.75 | 4.24 | 7.32 | 7.48 | 10.66 | 9.74 | 9.08 | 5.82 | 6.13 | 4.81 | 46.96 |
| Year Highest Occurred | 1969 | 1981 | 1976 | 1964 | 1964 | 1979 | 1982 | 1977 | 1985 | 1990 | 1975 | 1970 | 1982 |
| Lowest Precipitation (in.) | 0.68 | 0.08 | 0.54 | 0.53 | 0.70 | 1.57 | 0.71 | 1.12 | 0.84 | 0.91 | 0.42 | 0.67 | 25.21 |
| Year Lowest Occurred | 1965 | 1987 | 1987 | 1988 | 1990 | 1988 | 1989 | 1968 | 1989 | 1976 | 1981 | 1986 | 1976 |
| Heating Degree Days (F) | 1649. | 1375. | 1156. | 720. | 400. | 147. | 52. | 87. | 265. | 574. | 981. | 1479. | 8885. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 15. | 36. | 117. | 78. | 0. | 0. | 0. | 0. | 246. |