| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 49.6 | 49.4 | 49.9 | 51.0 | 53.3 | 56.8 | 56.1 | 56.2 | 55.3 | 54.5 | 52.3 | 50.4 | 52.9 |
| Highest Mean Max. Temperature (F) | 56.4 | 55.4 | 56.5 | 55.0 | 58.0 | 61.0 | 59.5 | 58.6 | 57.8 | 56.7 | 56.4 | 55.9 | 55.6 |
| Year Highest Occurred | 1983 | 1983 | 1983 | 1990 | 1981 | 1966 | 1966 | 1986 | 1969 | 1982 | 1983 | 1986 | 1986 |
| Lowest Mean Max. Temperature (F) | 43.1 | 43.6 | 43.0 | 46.3 | 48.8 | 52.8 | 53.0 | 54.2 | 52.2 | 51.5 | 47.4 | 44.5 | 50.0 |
| Year Lowest Occurred | 1975 | 1965 | 1976 | 1989 | 1963 | 1974 | 1974 | 1978 | 1976 | 1961 | 1978 | 1970 | 1976 |
| Mean Temperature (F) | 41.5 | 41.2 | 41.8 | 42.7 | 44.9 | 48.2 | 47.5 | 47.8 | 47.0 | 46.2 | 44.3 | 42.5 | 44.6 |
| Highest Mean Temperature (F) | 47.8 | 46.2 | 47.4 | 46.6 | 48.9 | 51.8 | 50.7 | 50.7 | 49.3 | 48.7 | 48.2 | 47.2 | 47.7 |
| Year Highest Occurred | 1986 | 1986 | 1983 | 1987 | 1981 | 1966 | 1983 | 1986 | 1988 | 1987 | 1982 | 1986 | 1986 |
| Lowest Mean Temperature (F) | 36.3 | 35.6 | 36.7 | 39.5 | 41.1 | 45.0 | 44.8 | 45.0 | 44.4 | 44.2 | 40.6 | 37.9 | 42.2 |
| Year Lowest Occurred | 1975 | 1965 | 1976 | 1989 | 1963 | 1974 | 1975 | 1971 | 1976 | 1961 | 1978 | 1970 | 1976 |
| Mean Min. Temperature (F) | 33.4 | 33.1 | 33.5 | 34.4 | 36.5 | 39.6 | 38.8 | 39.2 | 38.7 | 38.0 | 36.3 | 34.6 | 36.3 |
| Highest Mean Min. Temperature (F) | 39.4 | 38.6 | 38.2 | 38.3 | 39.8 | 42.9 | 42.3 | 42.7 | 41.9 | 41.1 | 40.2 | 38.4 | 39.8 |
| Year Highest Occurred | 1986 | 1986 | 1983 | 1987 | 1981 | 1984 | 1983 | 1986 | 1986 | 1987 | 1982 | 1986 | 1986 |
| Lowest Mean Min. Temperature (F) | 29.1 | 27.5 | 29.8 | 31.3 | 33.2 | 35.7 | 35.3 | 35.7 | 36.3 | 36.0 | 33.1 | 31.3 | 34.3 |
| Year Lowest Occurred | 1971 | 1965 | 1962 | 1970 | 1971 | 1963 | 1963 | 1971 | 1965 | 1964 | 1974 | 1971 | 1971 |
| Mean Precipitation (in.) | 2.76 | 1.65 | 2.44 | 1.90 | 1.45 | 0.56 | 1.15 | 1.40 | 1.43 | 1.18 | 2.32 | 2.40 | 20.64 |
| Highest Precipitation (in.) | 12.78 | 10.12 | 15.57 | 9.41 | 5.84 | 2.49 | 4.73 | 5.54 | 4.74 | 4.52 | 10.32 | 16.54 | 48.86 |
| Year Highest Occurred | 1990 | 1982 | 1980 | 1986 | 1965 | 1983 | 1982 | 1982 | 1966 | 1979 | 1990 | 1987 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.11 | 0.00 | 0.01 | 0.00 | 6.12 |
| Year Lowest Occurred | 1986 | 1983 | 1983 | 1973 | 1988 | 1984 | 1988 | 1974 | 1975 | 1981 | 1989 | 1963 | 1983 |
| Heating Degree Days (F) | 729. | 666. | 719. | 669. | 623. | 504. | 543. | 533. | 540. | 583. | 621. | 698. | 7428. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |