| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 20.7 | 26.7 | 39.1 | 56.0 | 69.0 | 79.0 | 83.3 | 80.0 | 71.1 | 59.8 | 41.4 | 25.5 | 54.3 |
| Highest Mean Max. Temperature (F) | 34.1 | 41.1 | 50.8 | 65.6 | 78.4 | 88.0 | 88.4 | 86.8 | 77.8 | 70.7 | 48.0 | 34.7 | 59.4 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1963 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 8.2 | 16.4 | 28.1 | 45.3 | 63.1 | 69.8 | 77.1 | 75.8 | 60.0 | 54.3 | 33.1 | 11.9 | 50.9 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1968 | 1969 | 1962 | 1965 | 1965 | 1987 | 1985 | 1983 | 1972 |
| Mean Temperature (F) | 10.3 | 16.1 | 29.7 | 45.2 | 57.4 | 67.2 | 71.8 | 68.9 | 59.8 | 48.7 | 32.5 | 16.5 | 43.7 |
| Highest Mean Temperature (F) | 24.6 | 30.3 | 38.7 | 52.6 | 66.1 | 73.2 | 75.7 | 73.4 | 66.2 | 59.6 | 39.0 | 26.0 | 48.4 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1964 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -2.1 | 6.2 | 18.6 | 37.8 | 51.7 | 60.1 | 67.2 | 65.0 | 52.2 | 42.4 | 24.3 | 0.7 | 40.8 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1971 | 1986 | 1965 | 1988 | 1985 | 1983 | 1972 |
| Mean Min. Temperature (F) | -0.2 | 5.4 | 20.3 | 34.3 | 45.8 | 55.4 | 60.2 | 57.7 | 48.5 | 37.5 | 23.6 | 7.4 | 33.0 |
| Highest Mean Min. Temperature (F) | 15.0 | 19.5 | 30.7 | 39.5 | 53.8 | 60.8 | 64.9 | 61.7 | 54.6 | 48.4 | 30.0 | 19.6 | 37.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1985 | 1977 | 1963 | 1964 | 1973 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -14.4 | -6.5 | 9.0 | 28.6 | 40.0 | 48.2 | 55.4 | 53.4 | 43.1 | 29.1 | 15.2 | -10.5 | 30.6 |
| Year Lowest Occurred | 1977 | 1978 | 1965 | 1983 | 1983 | 1982 | 1971 | 1971 | 1984 | 1988 | 1976 | 1983 | 1972 |
| Mean Precipitation (in.) | 0.94 | 0.86 | 2.01 | 2.91 | 3.69 | 3.57 | 4.21 | 4.05 | 3.65 | 2.38 | 1.59 | 1.14 | 31.00 |
| Highest Precipitation (in.) | 3.60 | 2.36 | 4.54 | 5.64 | 6.33 | 7.53 | 7.93 | 10.40 | 9.13 | 5.33 | 4.68 | 3.41 | 40.31 |
| Year Highest Occurred | 1969 | 1981 | 1979 | 1967 | 1965 | 1975 | 1986 | 1981 | 1986 | 1984 | 1975 | 1982 | 1986 |
| Lowest Precipitation (in.) | 0.06 | 0.00 | 0.43 | 0.22 | 1.62 | 1.06 | 0.32 | 0.99 | 0.83 | 0.34 | 0.04 | 0.20 | 21.07 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1987 | 1976 | 1982 | 1980 | 1971 | 1967 | 1965 | 1967 | 1967 | 1988 |
| Heating Degree Days (F) | 1696. | 1369. | 1094. | 594. | 267. | 57. | 13. | 24. | 176. | 510. | 975. | 1504. | 8279. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 32. | 123. | 224. | 145. | 20. | 0. | 0. | 0. | 544. |