| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 26.9 | 32.7 | 38.0 | 48.7 | 58.3 | 67.6 | 75.8 | 75.3 | 64.7 | 54.4 | 37.2 | 28.5 | 50.7 |
| Highest Mean Max. Temperature (F) | 40.9 | 44.0 | 48.5 | 58.2 | 63.6 | 78.1 | 82.4 | 83.5 | 76.7 | 61.8 | 45.3 | 38.4 | 55.0 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1987 | 1985 | 1961 | 1985 | 1961 | 1967 | 1978 | 1969 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 6.7 | 16.0 | 29.5 | 38.0 | 52.2 | 61.3 | 69.2 | 66.4 | 50.4 | 45.3 | 15.3 | 11.6 | 47.4 |
| Year Lowest Occurred | 1969 | 1989 | 1967 | 1975 | 1978 | 1976 | 1972 | 1977 | 1965 | 1969 | 1985 | 1983 | 1978 |
| Mean Temperature (F) | 17.7 | 23.1 | 28.5 | 38.4 | 47.3 | 55.4 | 61.5 | 60.8 | 51.8 | 43.2 | 28.7 | 20.1 | 39.7 |
| Highest Mean Temperature (F) | 33.2 | 35.7 | 38.8 | 46.7 | 51.1 | 62.1 | 65.9 | 67.7 | 59.5 | 50.3 | 36.1 | 29.3 | 43.6 |
| Year Highest Occurred | 1986 | 1977 | 1986 | 1987 | 1987 | 1988 | 1985 | 1971 | 1967 | 1965 | 1987 | 1979 | 1987 |
| Lowest Mean Temperature (F) | -4.5 | 7.6 | 18.3 | 28.5 | 44.1 | 50.6 | 56.9 | 55.6 | 41.1 | 35.8 | 8.8 | 2.1 | 36.6 |
| Year Lowest Occurred | 1969 | 1989 | 1965 | 1975 | 1974 | 1976 | 1972 | 1980 | 1965 | 1969 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | 8.5 | 13.4 | 18.9 | 28.0 | 36.1 | 43.2 | 47.2 | 46.3 | 38.8 | 32.0 | 20.3 | 11.6 | 28.7 |
| Highest Mean Min. Temperature (F) | 25.4 | 28.5 | 29.0 | 35.1 | 39.9 | 48.6 | 52.1 | 52.1 | 43.2 | 39.7 | 27.7 | 20.2 | 32.2 |
| Year Highest Occurred | 1986 | 1977 | 1986 | 1987 | 1987 | 1970 | 1975 | 1971 | 1963 | 1965 | 1962 | 1986 | 1987 |
| Lowest Mean Min. Temperature (F) | -15.6 | -4.3 | 6.4 | 18.9 | 32.9 | 39.9 | 44.3 | 41.6 | 31.5 | 26.3 | 2.2 | -7.4 | 25.6 |
| Year Lowest Occurred | 1969 | 1979 | 1965 | 1975 | 1979 | 1976 | 1969 | 1966 | 1961 | 1969 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 1.09 | 0.80 | 0.92 | 1.23 | 2.19 | 2.45 | 1.47 | 1.46 | 1.34 | 0.89 | 0.93 | 0.87 | 15.64 |
| Highest Precipitation (in.) | 4.68 | 2.70 | 2.81 | 4.50 | 6.43 | 9.24 | 5.68 | 4.93 | 5.86 | 2.74 | 4.13 | 3.03 | 25.67 |
| Year Highest Occurred | 1969 | 1986 | 1987 | 1967 | 1981 | 1964 | 1978 | 1977 | 1985 | 1990 | 1990 | 1964 | 1964 |
| Lowest Precipitation (in.) | 0.02 | 0.00 | 0.00 | 0.08 | 0.47 | 0.40 | 0.10 | 0.00 | 0.14 | 0.00 | 0.03 | 0.05 | 5.27 |
| Year Lowest Occurred | 1973 | 1977 | 1978 | 1977 | 1972 | 1961 | 1986 | 1969 | 1973 | 1965 | 1969 | 1987 | 1973 |
| Heating Degree Days (F) | 1466. | 1173. | 1132. | 798. | 549. | 298. | 135. | 185. | 420. | 676. | 1089. | 1392. | 9313. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 10. | 26. | 54. | 24. | 0. | 0. | 0. | 114. |