| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 29.9 | 38.4 | 53.4 | 65.3 | 75.0 | 84.9 | 91.4 | 89.2 | 79.8 | 66.5 | 48.6 | 33.4 | 63.0 |
| Highest Mean Max. Temperature (F) | 47.2 | 52.2 | 64.8 | 73.1 | 82.9 | 92.9 | 95.8 | 94.4 | 85.5 | 74.4 | 56.7 | 47.7 | 67.0 |
| Year Highest Occurred | 1981 | 1963 | 1972 | 1985 | 1969 | 1977 | 1989 | 1985 | 1979 | 1988 | 1965 | 1980 | 1977 |
| Lowest Mean Max. Temperature (F) | 14.9 | 23.1 | 45.3 | 58.4 | 69.1 | 77.5 | 87.1 | 82.0 | 71.1 | 57.9 | 37.1 | 18.3 | 59.1 |
| Year Lowest Occurred | 1979 | 1973 | 1962 | 1983 | 1983 | 1967 | 1983 | 1968 | 1961 | 1969 | 1971 | 1978 | 1973 |
| Mean Temperature (F) | 17.0 | 24.6 | 38.6 | 48.8 | 58.0 | 66.8 | 73.5 | 71.3 | 61.8 | 49.9 | 35.2 | 21.0 | 47.2 |
| Highest Mean Temperature (F) | 31.7 | 37.6 | 46.7 | 54.4 | 64.2 | 73.0 | 75.9 | 75.3 | 65.6 | 56.4 | 42.8 | 34.2 | 51.4 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1985 | 1969 | 1977 | 1964 | 1983 | 1981 | 1963 | 1965 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 3.9 | 11.4 | 32.4 | 43.3 | 54.5 | 62.4 | 69.8 | 66.5 | 55.2 | 44.1 | 26.5 | 6.7 | 44.3 |
| Year Lowest Occurred | 1973 | 1973 | 1962 | 1970 | 1983 | 1975 | 1987 | 1968 | 1965 | 1970 | 1964 | 1978 | 1973 |
| Mean Min. Temperature (F) | 4.1 | 10.9 | 23.8 | 32.3 | 41.0 | 48.7 | 55.4 | 53.4 | 43.8 | 33.2 | 21.7 | 8.5 | 31.4 |
| Highest Mean Min. Temperature (F) | 16.2 | 22.9 | 30.8 | 36.2 | 45.4 | 53.1 | 58.4 | 58.6 | 49.5 | 40.4 | 28.9 | 20.6 | 35.9 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1962 | 1969 | 1977 | 1976 | 1969 | 1981 | 1963 | 1965 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -9.4 | -3.5 | 19.0 | 27.2 | 37.1 | 44.2 | 51.4 | 47.9 | 36.3 | 27.6 | 13.7 | -4.9 | 26.9 |
| Year Lowest Occurred | 1988 | 1989 | 1964 | 1970 | 1990 | 1989 | 1987 | 1990 | 1988 | 1970 | 1964 | 1978 | 1989 |
| Mean Precipitation (in.) | 0.53 | 0.44 | 0.56 | 0.60 | 0.78 | 0.66 | 0.49 | 0.57 | 0.64 | 0.87 | 0.48 | 0.51 | 7.13 |
| Highest Precipitation (in.) | 1.87 | 1.35 | 1.70 | 2.15 | 1.92 | 3.84 | 2.15 | 1.60 | 2.44 | 2.90 | 1.67 | 1.72 | 13.09 |
| Year Highest Occurred | 1988 | 1962 | 1979 | 1968 | 1983 | 1965 | 1987 | 1982 | 1982 | 1981 | 1978 | 1966 | 1965 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.02 | 0.04 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.79 |
| Year Lowest Occurred | 1966 | 1974 | 1971 | 1987 | 1974 | 1987 | 1978 | 1985 | 1979 | 1964 | 1976 | 1989 | 1974 |
| Heating Degree Days (F) | 1488. | 1131. | 818. | 486. | 227. | 59. | 0. | 9. | 146. | 468. | 894. | 1364. | 7090. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 10. | 113. | 264. | 204. | 50. | 0. | 0. | 0. | 641. |