| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 17.8 | 23.2 | 35.4 | 51.1 | 65.2 | 72.3 | 76.8 | 73.4 | 63.4 | 53.5 | 36.2 | 21.7 | 49.2 |
| Highest Mean Max. Temperature (F) | 29.7 | 33.7 | 43.0 | 60.8 | 75.7 | 77.4 | 81.5 | 78.6 | 68.9 | 65.9 | 42.8 | 28.0 | 53.0 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1969 | 1989 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 7.8 | 15.8 | 26.9 | 43.9 | 58.4 | 63.0 | 72.5 | 68.6 | 57.3 | 46.2 | 29.0 | 13.2 | 46.9 |
| Year Lowest Occurred | 1963 | 1989 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1988 | 1976 | 1985 | 1979 |
| Mean Temperature (F) | 7.7 | 11.9 | 25.0 | 39.9 | 53.2 | 61.5 | 66.5 | 63.6 | 54.4 | 44.4 | 29.1 | 13.6 | 39.2 |
| Highest Mean Temperature (F) | 17.5 | 23.8 | 34.3 | 46.6 | 62.9 | 65.9 | 71.1 | 67.8 | 58.9 | 54.5 | 36.6 | 21.4 | 43.3 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1990 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -2.5 | 2.1 | 16.6 | 33.2 | 46.3 | 54.2 | 62.1 | 59.2 | 49.8 | 36.2 | 20.7 | 2.0 | 36.6 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1967 | 1969 | 1990 | 1977 | 1965 | 1988 | 1976 | 1989 | 1989 |
| Mean Min. Temperature (F) | -2.4 | 0.6 | 14.5 | 28.8 | 41.2 | 50.6 | 56.1 | 53.8 | 45.4 | 35.2 | 22.0 | 5.5 | 29.3 |
| Highest Mean Min. Temperature (F) | 6.5 | 15.9 | 26.2 | 33.3 | 50.1 | 54.8 | 61.9 | 58.2 | 49.5 | 43.6 | 30.5 | 15.4 | 33.5 |
| Year Highest Occurred | 1987 | 1983 | 1973 | 1977 | 1977 | 1971 | 1983 | 1984 | 1978 | 1971 | 1990 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | -13.4 | -11.6 | 6.2 | 22.4 | 34.1 | 44.9 | 48.2 | 49.4 | 39.5 | 26.2 | 12.3 | -9.8 | 23.9 |
| Year Lowest Occurred | 1977 | 1989 | 1965 | 1975 | 1967 | 1982 | 1990 | 1967 | 1989 | 1988 | 1976 | 1989 | 1989 |
| Mean Precipitation (in.) | 1.09 | 0.90 | 1.58 | 2.19 | 3.83 | 4.02 | 3.95 | 4.62 | 4.11 | 2.87 | 2.04 | 1.54 | 32.74 |
| Highest Precipitation (in.) | 3.09 | 3.16 | 3.76 | 4.66 | 7.75 | 8.84 | 9.05 | 9.97 | 8.89 | 5.50 | 5.04 | 3.99 | 46.77 |
| Year Highest Occurred | 1967 | 1971 | 1966 | 1982 | 1970 | 1968 | 1972 | 1972 | 1968 | 1990 | 1975 | 1968 | 1968 |
| Lowest Precipitation (in.) | 0.00 | 0.13 | 0.16 | 0.41 | 0.31 | 1.43 | 0.45 | 0.59 | 0.82 | 0.54 | 0.27 | 0.31 | 22.14 |
| Year Lowest Occurred | 1990 | 1988 | 1990 | 1988 | 1986 | 1987 | 1989 | 1970 | 1989 | 1964 | 1981 | 1967 | 1989 |
| Heating Degree Days (F) | 1776. | 1487. | 1240. | 753. | 388. | 146. | 57. | 98. | 318. | 639. | 1077. | 1593. | 9572. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 22. | 41. | 103. | 54. | 0. | 0. | 0. | 0. | 220. |