| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 24.3 | 28.5 | 39.1 | 53.9 | 67.8 | 76.4 | 81.1 | 78.2 | 68.7 | 57.8 | 41.6 | 28.3 | 53.8 |
| Highest Mean Max. Temperature (F) | 33.2 | 39.1 | 48.4 | 61.0 | 78.2 | 82.0 | 85.3 | 85.6 | 72.2 | 70.6 | 47.8 | 35.4 | 56.4 |
| Year Highest Occurred | 1990 | 1984 | 1968 | 1987 | 1977 | 1970 | 1983 | 1969 | 1970 | 1963 | 1981 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 15.3 | 19.9 | 32.7 | 47.7 | 60.2 | 69.5 | 75.6 | 70.9 | 63.3 | 49.8 | 34.9 | 17.3 | 50.7 |
| Year Lowest Occurred | 1963 | 1979 | 1965 | 1975 | 1973 | 1969 | 1986 | 1986 | 1965 | 1987 | 1989 | 1989 | 1979 |
| Mean Temperature (F) | 12.8 | 16.4 | 28.0 | 42.0 | 54.3 | 63.3 | 68.2 | 66.1 | 57.0 | 46.5 | 33.0 | 19.0 | 42.2 |
| Highest Mean Temperature (F) | 22.5 | 27.7 | 36.6 | 47.0 | 62.9 | 68.2 | 72.2 | 71.3 | 60.7 | 56.7 | 38.6 | 27.4 | 45.1 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1977 | 1970 | 1983 | 1969 | 1971 | 1963 | 1963 | 1965 | 1973 |
| Lowest Mean Temperature (F) | 4.1 | 8.0 | 21.4 | 36.0 | 48.1 | 58.0 | 64.8 | 60.2 | 52.4 | 39.3 | 26.3 | 7.5 | 39.4 |
| Year Lowest Occurred | 1977 | 1979 | 1989 | 1975 | 1983 | 1982 | 1990 | 1986 | 1974 | 1987 | 1989 | 1989 | 1989 |
| Mean Min. Temperature (F) | 1.3 | 4.3 | 16.9 | 30.0 | 40.8 | 50.2 | 55.3 | 53.9 | 45.2 | 35.2 | 24.3 | 9.7 | 30.6 |
| Highest Mean Min. Temperature (F) | 11.7 | 17.0 | 26.1 | 35.2 | 47.8 | 55.0 | 60.2 | 59.6 | 49.8 | 45.0 | 29.4 | 20.9 | 34.1 |
| Year Highest Occurred | 1990 | 1983 | 1973 | 1986 | 1982 | 1971 | 1975 | 1973 | 1978 | 1971 | 1963 | 1965 | 1973 |
| Lowest Mean Min. Temperature (F) | -8.3 | -5.0 | 9.6 | 24.3 | 35.9 | 43.5 | 49.5 | 49.5 | 39.9 | 28.8 | 14.8 | -2.3 | 27.1 |
| Year Lowest Occurred | 1977 | 1967 | 1989 | 1975 | 1983 | 1982 | 1985 | 1986 | 1974 | 1987 | 1976 | 1989 | 1989 |
| Mean Precipitation (in.) | 1.01 | 0.89 | 1.85 | 2.49 | 3.49 | 3.70 | 3.11 | 3.71 | 3.82 | 2.30 | 2.10 | 1.57 | 30.04 |
| Highest Precipitation (in.) | 3.23 | 2.22 | 5.67 | 5.22 | 7.95 | 8.78 | 8.51 | 12.53 | 7.90 | 4.52 | 5.31 | 3.09 | 36.74 |
| Year Highest Occurred | 1969 | 1981 | 1977 | 1968 | 1973 | 1969 | 1982 | 1974 | 1965 | 1967 | 1985 | 1968 | 1977 |
| Lowest Precipitation (in.) | 0.07 | 0.07 | 0.31 | 0.42 | 0.66 | 1.02 | 1.14 | 0.65 | 0.88 | 0.25 | 0.00 | 0.00 | 19.37 |
| Year Lowest Occurred | 1981 | 1969 | 1981 | 1989 | 1986 | 1988 | 1981 | 1969 | 1989 | 1987 | 1976 | 1986 | 1976 |
| Heating Degree Days (F) | 1618. | 1361. | 1147. | 690. | 354. | 108. | 35. | 66. | 244. | 574. | 960. | 1426. | 8583. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 22. | 57. | 134. | 100. | 0. | 0. | 0. | 0. | 313. |