| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.0 | 27.7 | 39.2 | 55.9 | 68.9 | 77.3 | 81.9 | 79.3 | 70.1 | 58.3 | 41.4 | 26.4 | 54.0 |
| Highest Mean Max. Temperature (F) | 33.9 | 37.4 | 49.5 | 65.4 | 79.0 | 86.3 | 89.3 | 87.1 | 74.9 | 68.0 | 48.5 | 34.7 | 58.6 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1988 | 1978 | 1963 | 1975 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.8 | 20.0 | 29.3 | 47.7 | 62.1 | 67.3 | 76.4 | 73.1 | 63.5 | 52.8 | 34.7 | 16.6 | 51.1 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1973 | 1969 | 1967 | 1966 | 1965 | 1980 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 12.4 | 17.6 | 29.4 | 44.3 | 56.0 | 64.6 | 69.3 | 66.8 | 58.2 | 47.3 | 32.9 | 17.9 | 43.1 |
| Highest Mean Temperature (F) | 24.6 | 27.9 | 38.5 | 51.1 | 64.3 | 69.4 | 74.2 | 73.2 | 62.2 | 55.7 | 38.5 | 26.3 | 47.6 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1988 | 1988 | 1988 | 1990 | 1963 | 1975 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 1.2 | 9.2 | 20.5 | 37.1 | 49.7 | 56.6 | 64.6 | 60.9 | 53.3 | 42.3 | 25.3 | 8.0 | 40.3 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1967 | 1967 | 1965 | 1987 | 1976 | 1983 | 1967 |
| Mean Min. Temperature (F) | 2.7 | 7.5 | 19.5 | 32.6 | 42.9 | 51.9 | 56.7 | 54.2 | 46.2 | 36.1 | 24.3 | 9.3 | 32.0 |
| Highest Mean Min. Temperature (F) | 15.2 | 20.0 | 30.1 | 37.7 | 49.5 | 56.0 | 60.0 | 59.3 | 51.1 | 44.5 | 29.2 | 19.4 | 36.5 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1977 | 1977 | 1984 | 1986 | 1988 | 1990 | 1971 | 1987 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -8.5 | -1.7 | 11.7 | 26.4 | 36.4 | 45.6 | 52.8 | 48.2 | 40.5 | 30.0 | 14.6 | -2.5 | 29.0 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1982 | 1967 | 1967 | 1967 | 1976 | 1976 | 1976 | 1967 |
| Mean Precipitation (in.) | 0.92 | 0.90 | 2.00 | 2.89 | 4.11 | 4.03 | 4.01 | 4.06 | 4.50 | 2.72 | 2.05 | 1.45 | 33.64 |
| Highest Precipitation (in.) | 2.69 | 2.96 | 4.19 | 5.60 | 10.41 | 9.56 | 10.51 | 9.63 | 10.02 | 5.62 | 5.45 | 3.65 | 41.88 |
| Year Highest Occurred | 1967 | 1971 | 1966 | 1973 | 1973 | 1984 | 1986 | 1980 | 1964 | 1984 | 1983 | 1971 | 1968 |
| Lowest Precipitation (in.) | 0.06 | 0.00 | 0.10 | 0.81 | 1.42 | 0.73 | 1.00 | 0.71 | 0.30 | 0.48 | 0.02 | 0.26 | 22.07 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1989 | 1986 | 1983 | 1974 | 1976 | 1979 | 1964 | 1976 | 1989 | 1976 |
| Heating Degree Days (F) | 1631. | 1327. | 1104. | 621. | 306. | 90. | 28. | 61. | 214. | 549. | 963. | 1460. | 8354. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 27. | 78. | 161. | 117. | 10. | 0. | 0. | 0. | 393. |