| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 45.1 | 49.7 | 53.0 | 57.6 | 63.7 | 69.0 | 74.3 | 74.8 | 69.3 | 60.2 | 50.5 | 44.7 | 59.3 |
| Highest Mean Max. Temperature (F) | 53.2 | 56.4 | 57.7 | 63.2 | 68.3 | 73.9 | 82.8 | 82.3 | 76.6 | 66.0 | 54.2 | 50.0 | 61.7 |
| Year Highest Occurred | 1981 | 1968 | 1986 | 1989 | 1969 | 1961 | 1985 | 1967 | 1974 | 1987 | 1981 | 1980 | 1987 |
| Lowest Mean Max. Temperature (F) | 36.1 | 41.1 | 47.6 | 53.2 | 57.9 | 63.1 | 69.7 | 68.3 | 64.7 | 56.1 | 39.6 | 39.1 | 56.9 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1975 | 1962 | 1971 | 1963 | 1976 | 1978 | 1975 | 1985 | 1983 | 1964 |
| Mean Temperature (F) | 38.9 | 42.2 | 44.2 | 47.9 | 53.4 | 58.7 | 62.8 | 63.0 | 57.8 | 50.5 | 43.7 | 38.9 | 50.2 |
| Highest Mean Temperature (F) | 46.3 | 47.6 | 48.1 | 51.4 | 56.0 | 62.3 | 67.4 | 67.2 | 62.1 | 53.6 | 47.7 | 43.7 | 52.0 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1989 | 1983 | 1969 | 1985 | 1967 | 1967 | 1988 | 1987 | 1980 | 1987 |
| Lowest Mean Temperature (F) | 31.2 | 33.2 | 40.2 | 43.4 | 50.6 | 54.6 | 60.2 | 59.1 | 54.8 | 46.4 | 32.3 | 32.4 | 47.9 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1975 | 1962 | 1971 | 1963 | 1973 | 1983 | 1984 | 1985 | 1985 | 1985 |
| Mean Min. Temperature (F) | 32.7 | 34.6 | 35.4 | 38.2 | 43.1 | 48.3 | 51.2 | 51.2 | 46.4 | 40.7 | 36.8 | 33.0 | 41.0 |
| Highest Mean Min. Temperature (F) | 39.4 | 39.4 | 39.4 | 41.3 | 45.8 | 52.6 | 54.1 | 54.0 | 49.6 | 46.2 | 41.7 | 38.5 | 42.5 |
| Year Highest Occurred | 1981 | 1963 | 1968 | 1987 | 1986 | 1969 | 1990 | 1990 | 1969 | 1988 | 1987 | 1966 | 1986 |
| Lowest Mean Min. Temperature (F) | 25.9 | 25.3 | 31.5 | 33.5 | 40.7 | 44.1 | 49.1 | 47.4 | 41.9 | 36.1 | 25.0 | 24.8 | 37.3 |
| Year Lowest Occurred | 1980 | 1989 | 1985 | 1975 | 1965 | 1976 | 1984 | 1973 | 1984 | 1984 | 1985 | 1985 | 1985 |
| Mean Precipitation (in.) | 8.89 | 6.20 | 6.08 | 4.63 | 3.48 | 2.70 | 1.50 | 1.77 | 3.15 | 5.03 | 8.83 | 9.14 | 61.40 |
| Highest Precipitation (in.) | 16.22 | 12.83 | 11.36 | 7.54 | 6.08 | 5.85 | 4.35 | 4.96 | 7.79 | 12.39 | 18.24 | 17.90 | 81.41 |
| Year Highest Occurred | 1974 | 1972 | 1971 | 1970 | 1984 | 1964 | 1983 | 1968 | 1969 | 1975 | 1990 | 1979 | 1990 |
| Lowest Precipitation (in.) | 1.11 | 2.49 | 1.00 | 1.51 | 1.17 | 0.29 | 0.15 | 0.01 | 0.06 | 0.59 | 1.93 | 3.14 | 46.70 |
| Year Lowest Occurred | 1985 | 1987 | 1965 | 1983 | 1967 | 1965 | 1973 | 1967 | 1975 | 1987 | 1979 | 1985 | 1985 |
| Heating Degree Days (F) | 809. | 638. | 645. | 513. | 360. | 199. | 94. | 108. | 223. | 450. | 639. | 809. | 5487. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 10. | 26. | 46. | 7. | 0. | 0. | 0. | 89. |