| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 34.6 | 43.3 | 53.0 | 63.4 | 72.8 | 81.0 | 88.6 | 88.5 | 78.8 | 64.3 | 44.7 | 33.8 | 62.2 |
| Highest Mean Max. Temperature (F) | 40.6 | 49.5 | 58.7 | 70.2 | 78.0 | 88.0 | 97.2 | 96.3 | 88.2 | 71.2 | 51.2 | 39.9 | 65.2 |
| Year Highest Occurred | 1981 | 1967 | 1981 | 1977 | 1969 | 1961 | 1985 | 1967 | 1967 | 1987 | 1987 | 1962 | 1967 |
| Lowest Mean Max. Temperature (F) | 22.6 | 35.4 | 47.1 | 57.9 | 66.0 | 74.9 | 82.1 | 81.4 | 70.3 | 58.9 | 34.5 | 26.8 | 60.2 |
| Year Lowest Occurred | 1969 | 1969 | 1971 | 1972 | 1984 | 1980 | 1983 | 1976 | 1978 | 1990 | 1985 | 1985 | 1984 |
| Mean Temperature (F) | 26.2 | 32.7 | 40.1 | 48.4 | 56.0 | 63.6 | 69.3 | 69.0 | 60.3 | 48.7 | 36.6 | 26.6 | 48.1 |
| Highest Mean Temperature (F) | 36.1 | 38.2 | 44.3 | 52.8 | 59.5 | 69.3 | 76.0 | 74.1 | 67.4 | 54.9 | 41.6 | 33.3 | 50.8 |
| Year Highest Occurred | 1981 | 1967 | 1981 | 1989 | 1969 | 1969 | 1985 | 1986 | 1967 | 1988 | 1987 | 1962 | 1967 |
| Lowest Mean Temperature (F) | 13.8 | 25.1 | 35.1 | 43.1 | 52.0 | 58.7 | 65.0 | 63.5 | 55.1 | 45.4 | 25.2 | 18.1 | 46.1 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1972 | 1977 | 1976 | 1983 | 1980 | 1978 | 1977 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 17.8 | 22.0 | 27.1 | 33.3 | 39.1 | 46.1 | 49.9 | 49.6 | 41.8 | 33.0 | 28.5 | 19.5 | 34.0 |
| Highest Mean Min. Temperature (F) | 31.5 | 29.2 | 32.5 | 36.8 | 41.8 | 51.5 | 54.9 | 53.8 | 47.1 | 38.7 | 35.6 | 28.1 | 36.3 |
| Year Highest Occurred | 1981 | 1983 | 1983 | 1989 | 1987 | 1969 | 1990 | 1986 | 1966 | 1988 | 1965 | 1966 | 1987 |
| Lowest Mean Min. Temperature (F) | 1.4 | 12.4 | 22.2 | 28.2 | 36.0 | 40.3 | 46.9 | 43.0 | 37.4 | 26.5 | 15.8 | 7.2 | 31.0 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1972 | 1974 | 1976 | 1974 | 1980 | 1961 | 1978 | 1985 | 1978 | 1978 |
| Mean Precipitation (in.) | 4.97 | 2.99 | 2.07 | 1.16 | 0.69 | 0.63 | 0.34 | 0.60 | 0.76 | 1.77 | 4.19 | 5.24 | 25.41 |
| Highest Precipitation (in.) | 10.59 | 8.03 | 4.53 | 3.18 | 2.39 | 2.33 | 1.26 | 2.98 | 2.43 | 5.15 | 8.85 | 10.06 | 38.56 |
| Year Highest Occurred | 1990 | 1972 | 1972 | 1967 | 1990 | 1984 | 1966 | 1976 | 1977 | 1967 | 1990 | 1987 | 1972 |
| Lowest Precipitation (in.) | 0.13 | 0.56 | 0.18 | 0.05 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | 1.45 | 14.79 |
| Year Lowest Occurred | 1985 | 1964 | 1965 | 1966 | 1970 | 1970 | 1984 | 1989 | 1990 | 1987 | 1976 | 1976 | 1989 |
| Heating Degree Days (F) | 1203. | 904. | 772. | 498. | 279. | 107. | 27. | 42. | 189. | 505. | 852. | 1190. | 6568. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 65. | 160. | 166. | 48. | 0. | 0. | 0. | 439. |