| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 35.6 | 41.7 | 50.5 | 60.7 | 71.4 | 81.6 | 89.7 | 87.4 | 77.6 | 64.6 | 48.9 | 37.5 | 62.3 |
| Highest Mean Max. Temperature (F) | 42.1 | 49.5 | 59.3 | 67.9 | 80.0 | 88.1 | 94.4 | 90.5 | 83.1 | 75.0 | 56.2 | 45.9 | 64.4 |
| Year Highest Occurred | 1978 | 1970 | 1972 | 1987 | 1969 | 1961 | 1989 | 1981 | 1963 | 1988 | 1965 | 1977 | 1977 |
| Lowest Mean Max. Temperature (F) | 27.7 | 33.6 | 40.8 | 52.6 | 64.7 | 75.9 | 85.5 | 79.8 | 71.5 | 55.6 | 42.6 | 29.9 | 59.1 |
| Year Lowest Occurred | 1984 | 1964 | 1964 | 1975 | 1983 | 1964 | 1986 | 1968 | 1965 | 1984 | 1979 | 1990 | 1984 |
| Mean Temperature (F) | 25.1 | 30.8 | 38.8 | 47.1 | 56.2 | 65.1 | 72.8 | 70.6 | 61.1 | 49.5 | 37.6 | 27.6 | 48.5 |
| Highest Mean Temperature (F) | 32.9 | 37.7 | 45.1 | 51.2 | 62.5 | 70.3 | 76.8 | 74.3 | 66.1 | 56.1 | 44.6 | 34.7 | 50.9 |
| Year Highest Occurred | 1978 | 1970 | 1986 | 1985 | 1969 | 1988 | 1988 | 1963 | 1990 | 1963 | 1965 | 1977 | 1981 |
| Lowest Mean Temperature (F) | 17.0 | 20.3 | 30.0 | 41.6 | 51.6 | 61.1 | 69.2 | 66.2 | 56.0 | 44.5 | 31.0 | 18.1 | 46.5 |
| Year Lowest Occurred | 1973 | 1985 | 1964 | 1975 | 1975 | 1975 | 1987 | 1968 | 1965 | 1984 | 1979 | 1990 | 1964 |
| Mean Min. Temperature (F) | 14.6 | 19.8 | 27.0 | 33.5 | 40.9 | 48.5 | 55.7 | 53.7 | 44.5 | 34.3 | 26.3 | 17.7 | 34.7 |
| Highest Mean Min. Temperature (F) | 24.5 | 28.6 | 32.9 | 36.9 | 45.4 | 52.5 | 60.1 | 59.3 | 49.9 | 40.1 | 32.9 | 23.8 | 38.0 |
| Year Highest Occurred | 1981 | 1983 | 1983 | 1989 | 1987 | 1988 | 1988 | 1983 | 1981 | 1963 | 1965 | 1980 | 1983 |
| Lowest Mean Min. Temperature (F) | 3.7 | 6.6 | 19.1 | 29.0 | 36.8 | 45.2 | 52.7 | 47.6 | 40.3 | 30.5 | 19.3 | 6.2 | 32.4 |
| Year Lowest Occurred | 1973 | 1985 | 1964 | 1970 | 1975 | 1978 | 1987 | 1974 | 1964 | 1970 | 1979 | 1990 | 1979 |
| Mean Precipitation (in.) | 0.94 | 0.83 | 1.15 | 1.27 | 1.13 | 0.74 | 0.69 | 0.94 | 1.06 | 1.15 | 1.12 | 0.97 | 11.99 |
| Highest Precipitation (in.) | 2.23 | 3.12 | 3.72 | 3.01 | 3.77 | 2.68 | 1.70 | 2.96 | 5.63 | 3.45 | 3.79 | 7.03 | 26.78 |
| Year Highest Occurred | 1980 | 1986 | 1978 | 1986 | 1981 | 1969 | 1965 | 1983 | 1982 | 1981 | 1983 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.12 | 0.04 | 6.91 |
| Year Lowest Occurred | 1988 | 1985 | 1974 | 1987 | 1963 | 1986 | 1979 | 1974 | 1979 | 1989 | 1962 | 1976 | 1988 |
| Heating Degree Days (F) | 1237. | 958. | 812. | 537. | 281. | 71. | 0. | 10. | 153. | 481. | 822. | 1159. | 6521. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 8. | 74. | 242. | 184. | 36. | 0. | 0. | 0. | 544. |