| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 22.2 | 28.5 | 41.0 | 56.9 | 69.6 | 78.6 | 83.5 | 80.6 | 70.7 | 59.6 | 42.5 | 27.3 | 55.1 |
| Highest Mean Max. Temperature (F) | 35.0 | 40.5 | 51.6 | 64.1 | 79.7 | 87.3 | 88.2 | 86.6 | 76.0 | 70.3 | 51.5 | 35.9 | 59.3 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1963 | 1990 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 10.2 | 20.1 | 30.4 | 49.7 | 63.2 | 69.9 | 78.5 | 75.5 | 65.3 | 53.9 | 36.6 | 17.4 | 52.1 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1983 | 1969 | 1978 | 1977 | 1965 | 1988 | 1976 | 1983 | 1972 |
| Mean Temperature (F) | 12.1 | 17.2 | 30.6 | 45.3 | 56.9 | 66.1 | 71.0 | 68.2 | 58.6 | 47.9 | 33.4 | 18.4 | 43.8 |
| Highest Mean Temperature (F) | 25.0 | 28.9 | 39.3 | 51.9 | 65.0 | 70.8 | 74.8 | 73.8 | 62.6 | 57.2 | 39.4 | 27.9 | 47.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1971 | 1983 | 1983 | 1978 | 1963 | 1990 | 1965 | 1987 |
| Lowest Mean Temperature (F) | -1.7 | 7.7 | 21.7 | 39.9 | 51.4 | 59.7 | 66.7 | 63.7 | 54.4 | 41.5 | 25.1 | 7.3 | 41.4 |
| Year Lowest Occurred | 1977 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1974 | 1988 | 1976 | 1985 | 1978 |
| Mean Min. Temperature (F) | 1.9 | 6.0 | 20.2 | 33.7 | 44.2 | 53.6 | 58.4 | 55.7 | 46.5 | 36.2 | 24.3 | 9.4 | 32.5 |
| Highest Mean Min. Temperature (F) | 15.0 | 19.1 | 29.1 | 39.8 | 51.0 | 59.3 | 62.7 | 61.0 | 50.7 | 44.8 | 29.7 | 21.3 | 36.4 |
| Year Highest Occurred | 1990 | 1984 | 1977 | 1985 | 1962 | 1971 | 1983 | 1983 | 1985 | 1971 | 1983 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -13.6 | -5.1 | 10.1 | 28.7 | 38.7 | 48.3 | 54.2 | 51.5 | 40.9 | 29.1 | 13.5 | -5.5 | 29.5 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1982 | 1967 | 1982 | 1967 | 1967 | 1974 | 1988 | 1976 | 1985 | 1976 |
| Mean Precipitation (in.) | 0.86 | 0.91 | 2.04 | 3.00 | 3.78 | 3.98 | 4.08 | 4.15 | 4.25 | 2.37 | 1.96 | 1.35 | 32.73 |
| Highest Precipitation (in.) | 2.94 | 2.80 | 4.19 | 7.19 | 6.97 | 9.46 | 9.48 | 12.43 | 11.56 | 4.10 | 4.84 | 2.98 | 44.89 |
| Year Highest Occurred | 1969 | 1971 | 1977 | 1981 | 1973 | 1968 | 1978 | 1980 | 1965 | 1984 | 1982 | 1968 | 1965 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.31 | 1.02 | 1.48 | 1.49 | 0.19 | 0.26 | 0.33 | 0.18 | 0.03 | 0.00 | 19.42 |
| Year Lowest Occurred | 1988 | 1990 | 1978 | 1971 | 1981 | 1983 | 1967 | 1969 | 1979 | 1964 | 1976 | 1989 | 1976 |
| Heating Degree Days (F) | 1640. | 1338. | 1066. | 591. | 282. | 63. | 12. | 32. | 199. | 530. | 948. | 1445. | 8146. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 31. | 96. | 198. | 132. | 7. | 0. | 0. | 0. | 464. |