| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 25.4 | 32.4 | 42.9 | 56.8 | 67.4 | 77.8 | 86.3 | 84.8 | 71.7 | 60.4 | 41.5 | 29.1 | 56.4 |
| Highest Mean Max. Temperature (F) | 40.6 | 46.2 | 54.6 | 68.3 | 76.5 | 92.6 | 92.4 | 93.9 | 81.6 | 67.5 | 50.6 | 41.9 | 62.5 |
| Year Highest Occurred | 1981 | 1984 | 1981 | 1987 | 1988 | 1988 | 1985 | 1971 | 1990 | 1963 | 1987 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 2.1 | 16.6 | 25.8 | 44.9 | 57.5 | 71.2 | 78.7 | 76.2 | 58.4 | 47.8 | 18.5 | 10.4 | 51.6 |
| Year Lowest Occurred | 1969 | 1989 | 1965 | 1975 | 1974 | 1969 | 1972 | 1974 | 1965 | 1969 | 1985 | 1964 | 1978 |
| Mean Temperature (F) | 13.2 | 19.6 | 29.8 | 42.3 | 52.9 | 63.1 | 69.9 | 67.8 | 55.2 | 44.9 | 28.8 | 17.0 | 42.0 |
| Highest Mean Temperature (F) | 29.6 | 32.8 | 40.9 | 50.1 | 58.8 | 73.5 | 73.8 | 75.6 | 62.1 | 50.4 | 37.4 | 28.9 | 46.4 |
| Year Highest Occurred | 1986 | 1984 | 1986 | 1987 | 1988 | 1988 | 1989 | 1971 | 1963 | 1963 | 1962 | 1986 | 1987 |
| Lowest Mean Temperature (F) | -7.7 | 5.0 | 13.9 | 34.5 | 45.7 | 58.6 | 64.0 | 61.2 | 45.7 | 37.0 | 8.7 | -3.2 | 38.7 |
| Year Lowest Occurred | 1969 | 1989 | 1965 | 1975 | 1974 | 1969 | 1972 | 1974 | 1965 | 1969 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | 1.0 | 6.8 | 16.7 | 27.7 | 38.3 | 48.4 | 53.4 | 50.8 | 38.6 | 29.4 | 16.0 | 4.8 | 27.7 |
| Highest Mean Min. Temperature (F) | 20.2 | 20.0 | 27.5 | 32.1 | 41.9 | 54.3 | 57.6 | 57.2 | 44.1 | 34.9 | 24.4 | 17.4 | 31.6 |
| Year Highest Occurred | 1986 | 1983 | 1986 | 1969 | 1987 | 1988 | 1966 | 1971 | 1963 | 1986 | 1962 | 1986 | 1986 |
| Lowest Mean Min. Temperature (F) | -17.8 | -8.1 | 1.9 | 21.0 | 33.9 | 43.8 | 49.3 | 44.5 | 32.9 | 23.2 | -1.2 | -16.9 | 24.2 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1983 | 1974 | 1985 | 1977 | 1987 | 1965 | 1984 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.42 | 0.31 | 0.57 | 1.12 | 2.41 | 2.25 | 1.63 | 1.46 | 1.21 | 0.60 | 0.33 | 0.44 | 12.75 |
| Highest Precipitation (in.) | 1.56 | 1.02 | 1.90 | 3.41 | 4.81 | 5.01 | 3.94 | 4.27 | 8.74 | 2.04 | 0.96 | 2.00 | 19.69 |
| Year Highest Occurred | 1971 | 1979 | 1975 | 1970 | 1962 | 1963 | 1983 | 1985 | 1986 | 1962 | 1989 | 1977 | 1986 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.11 | 0.40 | 0.49 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 7.56 |
| Year Lowest Occurred | 1973 | 1990 | 1961 | 1977 | 1976 | 1979 | 1971 | 1967 | 1990 | 1990 | 1972 | 1990 | 1979 |
| Heating Degree Days (F) | 1606. | 1271. | 1091. | 681. | 379. | 132. | 22. | 80. | 318. | 623. | 1086. | 1488. | 8777. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 75. | 174. | 167. | 24. | 0. | 0. | 0. | 440. |