| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 45.2 | 50.0 | 53.7 | 58.5 | 65.4 | 70.8 | 75.9 | 76.4 | 70.8 | 61.7 | 50.8 | 44.9 | 60.3 |
| Highest Mean Max. Temperature (F) | 54.3 | 57.5 | 59.1 | 62.8 | 71.1 | 76.5 | 83.9 | 86.3 | 79.1 | 67.3 | 55.5 | 49.6 | 62.5 |
| Year Highest Occurred | 1981 | 1968 | 1986 | 1989 | 1969 | 1967 | 1985 | 1967 | 1967 | 1987 | 1981 | 1969 | 1987 |
| Lowest Mean Max. Temperature (F) | 35.6 | 41.9 | 47.6 | 53.8 | 59.7 | 65.9 | 71.5 | 68.9 | 65.9 | 57.0 | 40.6 | 39.1 | 58.4 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1975 | 1962 | 1981 | 1986 | 1976 | 1978 | 1981 | 1985 | 1990 | 1975 |
| Mean Temperature (F) | 38.7 | 42.2 | 44.7 | 48.5 | 54.5 | 59.6 | 63.4 | 63.6 | 58.8 | 51.3 | 44.0 | 39.0 | 50.7 |
| Highest Mean Temperature (F) | 46.7 | 47.9 | 48.5 | 52.2 | 57.9 | 64.2 | 67.6 | 67.4 | 63.1 | 55.1 | 48.6 | 43.4 | 52.3 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1969 | 1969 | 1985 | 1967 | 1967 | 1965 | 1965 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 30.5 | 33.7 | 40.2 | 42.8 | 50.8 | 56.2 | 60.5 | 59.9 | 55.0 | 47.7 | 33.4 | 33.1 | 48.7 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1982 | 1974 | 1976 | 1986 | 1976 | 1972 | 1972 | 1985 | 1990 | 1985 |
| Mean Min. Temperature (F) | 32.2 | 34.2 | 35.6 | 38.4 | 43.5 | 48.5 | 50.9 | 50.8 | 46.7 | 40.8 | 37.1 | 33.1 | 41.0 |
| Highest Mean Min. Temperature (F) | 39.1 | 39.6 | 40.0 | 41.6 | 46.4 | 53.2 | 54.2 | 54.4 | 49.8 | 45.6 | 42.3 | 38.7 | 42.9 |
| Year Highest Occurred | 1981 | 1983 | 1968 | 1990 | 1983 | 1969 | 1990 | 1990 | 1978 | 1988 | 1965 | 1966 | 1983 |
| Lowest Mean Min. Temperature (F) | 25.1 | 25.4 | 30.8 | 27.8 | 40.4 | 44.9 | 48.3 | 47.8 | 43.7 | 35.5 | 26.2 | 25.4 | 38.1 |
| Year Lowest Occurred | 1963 | 1989 | 1982 | 1982 | 1965 | 1965 | 1984 | 1973 | 1972 | 1972 | 1985 | 1985 | 1985 |
| Mean Precipitation (in.) | 8.60 | 5.76 | 6.08 | 5.51 | 4.43 | 3.45 | 2.09 | 2.34 | 3.76 | 5.40 | 8.70 | 8.74 | 64.86 |
| Highest Precipitation (in.) | 18.22 | 11.27 | 10.88 | 10.82 | 7.91 | 7.45 | 5.16 | 6.16 | 8.36 | 13.52 | 15.18 | 13.38 | 83.43 |
| Year Highest Occurred | 1971 | 1961 | 1972 | 1981 | 1984 | 1968 | 1966 | 1977 | 1969 | 1967 | 1986 | 1979 | 1968 |
| Lowest Precipitation (in.) | 0.99 | 2.45 | 1.19 | 2.48 | 2.03 | 0.28 | 0.05 | 0.14 | 0.43 | 0.19 | 2.00 | 1.16 | 43.13 |
| Year Lowest Occurred | 1985 | 1989 | 1965 | 1983 | 1963 | 1965 | 1984 | 1981 | 1975 | 1987 | 1979 | 1985 | 1987 |
| Heating Degree Days (F) | 815. | 638. | 629. | 495. | 326. | 173. | 80. | 91. | 197. | 425. | 630. | 806. | 5305. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 11. | 30. | 47. | 11. | 0. | 0. | 0. | 99. |