| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.6 | 27.4 | 39.5 | 54.7 | 68.2 | 77.3 | 82.3 | 79.1 | 70.5 | 59.2 | 43.0 | 28.6 | 54.5 |
| Highest Mean Max. Temperature (F) | 35.3 | 36.4 | 50.4 | 61.8 | 78.1 | 85.1 | 86.2 | 84.7 | 74.3 | 71.3 | 49.6 | 37.4 | 57.6 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1988 | 1988 | 1971 | 1963 | 1975 | 1982 | 1987 |
| Lowest Mean Max. Temperature (F) | 12.0 | 18.2 | 31.5 | 47.1 | 59.3 | 69.1 | 77.4 | 74.7 | 66.9 | 52.9 | 36.7 | 18.5 | 51.3 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1978 | 1979 | 1982 | 1980 | 1976 | 1983 | 1979 |
| Mean Temperature (F) | 14.8 | 18.1 | 30.2 | 44.2 | 56.3 | 65.7 | 70.8 | 68.2 | 59.5 | 48.9 | 34.8 | 20.9 | 44.4 |
| Highest Mean Temperature (F) | 27.6 | 28.4 | 38.1 | 49.6 | 64.1 | 70.8 | 74.6 | 73.7 | 63.1 | 58.3 | 40.4 | 29.7 | 48.1 |
| Year Highest Occurred | 1990 | 1984 | 1968 | 1977 | 1977 | 1988 | 1983 | 1988 | 1961 | 1963 | 1975 | 1982 | 1987 |
| Lowest Mean Temperature (F) | 2.7 | 8.6 | 23.4 | 38.0 | 49.4 | 59.1 | 66.5 | 65.3 | 55.7 | 43.7 | 27.7 | 10.4 | 42.2 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1990 | 1977 | 1974 | 1976 | 1976 | 1983 | 1979 |
| Mean Min. Temperature (F) | 5.9 | 8.7 | 20.9 | 33.7 | 44.3 | 54.1 | 59.3 | 57.2 | 48.6 | 38.6 | 26.6 | 13.0 | 34.2 |
| Highest Mean Min. Temperature (F) | 19.8 | 20.4 | 28.5 | 38.9 | 50.7 | 59.4 | 64.2 | 62.7 | 52.1 | 47.5 | 31.1 | 22.0 | 38.5 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1985 | 1982 | 1987 | 1983 | 1988 | 1961 | 1971 | 1975 | 1982 | 1987 |
| Lowest Mean Min. Temperature (F) | -6.7 | -1.1 | 14.7 | 28.0 | 38.6 | 47.3 | 53.5 | 52.1 | 43.6 | 32.5 | 18.7 | 1.7 | 32.1 |
| Year Lowest Occurred | 1977 | 1979 | 1989 | 1982 | 1967 | 1982 | 1990 | 1967 | 1974 | 1976 | 1976 | 1976 | 1972 |
| Mean Precipitation (in.) | 1.31 | 1.19 | 2.20 | 2.79 | 3.22 | 3.65 | 3.34 | 3.76 | 3.92 | 2.55 | 2.26 | 1.69 | 31.88 |
| Highest Precipitation (in.) | 2.86 | 3.34 | 5.30 | 5.19 | 7.46 | 8.01 | 7.16 | 8.03 | 12.70 | 5.76 | 5.94 | 3.88 | 41.18 |
| Year Highest Occurred | 1969 | 1971 | 1979 | 1981 | 1978 | 1969 | 1964 | 1975 | 1986 | 1967 | 1985 | 1971 | 1986 |
| Lowest Precipitation (in.) | 0.03 | 0.02 | 0.17 | 1.20 | 0.31 | 1.13 | 1.23 | 0.27 | 0.13 | 0.07 | 0.09 | 0.21 | 20.92 |
| Year Lowest Occurred | 1981 | 1969 | 1978 | 1989 | 1988 | 1988 | 1973 | 1969 | 1979 | 1963 | 1976 | 1976 | 1989 |
| Heating Degree Days (F) | 1556. | 1313. | 1079. | 624. | 302. | 75. | 11. | 28. | 175. | 499. | 906. | 1367. | 7935. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 32. | 96. | 191. | 128. | 10. | 0. | 0. | 0. | 457. |