| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.7 | 26.3 | 38.8 | 55.6 | 69.6 | 79.0 | 83.0 | 80.0 | 71.2 | 59.5 | 41.5 | 25.3 | 54.2 |
| Highest Mean Max. Temperature (F) | 35.5 | 42.9 | 50.2 | 66.6 | 80.8 | 87.9 | 87.2 | 86.2 | 78.9 | 72.9 | 48.8 | 34.8 | 59.3 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1975 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.5 | 14.0 | 26.0 | 44.7 | 64.4 | 70.9 | 77.6 | 75.6 | 61.4 | 54.3 | 31.8 | 9.7 | 51.1 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1983 | 1969 | 1962 | 1985 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 11.2 | 16.8 | 29.6 | 44.8 | 57.8 | 67.6 | 72.0 | 69.0 | 59.9 | 48.2 | 32.7 | 16.8 | 43.9 |
| Highest Mean Temperature (F) | 25.9 | 32.2 | 38.9 | 54.2 | 67.8 | 74.7 | 76.1 | 74.2 | 66.7 | 59.4 | 38.4 | 27.6 | 49.0 |
| Year Highest Occurred | 1990 | 1987 | 1977 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -0.8 | 4.3 | 16.8 | 38.0 | 51.9 | 60.4 | 67.1 | 65.3 | 52.5 | 43.4 | 23.6 | 0.1 | 41.5 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1986 | 1965 | 1987 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 1.7 | 7.3 | 20.4 | 34.0 | 45.9 | 56.2 | 61.0 | 58.0 | 48.5 | 36.9 | 23.8 | 8.3 | 33.5 |
| Highest Mean Min. Temperature (F) | 16.3 | 21.4 | 30.6 | 41.7 | 54.8 | 61.5 | 65.2 | 62.2 | 54.5 | 45.8 | 29.0 | 20.4 | 38.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1963 | 1987 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -10.3 | -5.5 | 7.6 | 29.3 | 38.9 | 49.8 | 55.7 | 52.7 | 43.6 | 31.4 | 15.4 | -9.6 | 31.2 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1982 | 1967 | 1969 | 1971 | 1967 | 1965 | 1988 | 1985 | 1983 | 1970 |
| Mean Precipitation (in.) | 0.86 | 0.90 | 1.86 | 2.85 | 3.64 | 4.38 | 4.20 | 4.00 | 3.22 | 2.31 | 1.40 | 1.14 | 30.76 |
| Highest Precipitation (in.) | 2.91 | 2.95 | 4.21 | 5.79 | 6.15 | 9.14 | 9.61 | 9.07 | 7.40 | 6.55 | 4.12 | 3.12 | 40.18 |
| Year Highest Occurred | 1975 | 1971 | 1977 | 1981 | 1978 | 1967 | 1963 | 1985 | 1964 | 1971 | 1973 | 1982 | 1968 |
| Lowest Precipitation (in.) | 0.10 | 0.00 | 0.60 | 0.83 | 1.11 | 0.72 | 0.42 | 0.83 | 0.87 | 0.11 | 0.02 | 0.13 | 18.71 |
| Year Lowest Occurred | 1990 | 1987 | 1968 | 1971 | 1967 | 1988 | 1975 | 1963 | 1969 | 1988 | 1967 | 1989 | 1976 |
| Heating Degree Days (F) | 1668. | 1350. | 1097. | 606. | 270. | 52. | 11. | 24. | 177. | 521. | 969. | 1494. | 8239. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 47. | 130. | 228. | 148. | 24. | 0. | 0. | 0. | 577. |