| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 30.8 | 36.6 | 42.2 | 51.8 | 60.9 | 70.1 | 79.0 | 77.2 | 66.4 | 56.2 | 40.2 | 30.9 | 53.5 |
| Highest Mean Max. Temperature (F) | 38.2 | 44.3 | 50.7 | 62.1 | 68.1 | 78.2 | 84.1 | 84.0 | 75.9 | 64.0 | 45.3 | 42.6 | 56.5 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1966 | 1988 | 1985 | 1971 | 1990 | 1988 | 1965 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 16.4 | 23.5 | 35.1 | 41.2 | 55.8 | 64.7 | 74.5 | 71.4 | 54.2 | 46.4 | 27.6 | 18.4 | 50.4 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1974 | 1964 | 1987 | 1968 | 1965 | 1969 | 1985 | 1983 | 1975 |
| Mean Temperature (F) | 20.2 | 25.5 | 30.8 | 39.4 | 48.0 | 56.3 | 63.2 | 61.7 | 52.0 | 42.8 | 29.9 | 20.8 | 40.9 |
| Highest Mean Temperature (F) | 28.0 | 34.0 | 39.3 | 46.5 | 52.3 | 62.3 | 68.2 | 67.2 | 59.2 | 49.2 | 35.2 | 31.6 | 43.0 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1987 | 1988 | 1985 | 1971 | 1990 | 1988 | 1989 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 3.6 | 11.6 | 22.8 | 31.2 | 44.0 | 52.4 | 59.6 | 57.4 | 43.1 | 36.5 | 18.0 | 8.6 | 38.5 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1974 | 1975 | 1986 | 1980 | 1965 | 1969 | 1985 | 1983 | 1975 |
| Mean Min. Temperature (F) | 9.6 | 14.3 | 19.4 | 27.0 | 35.0 | 42.4 | 47.4 | 46.1 | 37.6 | 29.5 | 19.5 | 10.7 | 28.2 |
| Highest Mean Min. Temperature (F) | 17.8 | 23.7 | 27.8 | 30.8 | 39.5 | 47.1 | 52.3 | 50.3 | 43.7 | 34.4 | 25.4 | 20.6 | 30.1 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1987 | 1987 | 1986 | 1985 | 1971 | 1963 | 1963 | 1989 | 1980 | 1986 |
| Lowest Mean Min. Temperature (F) | -9.3 | -0.3 | 10.5 | 21.2 | 32.0 | 39.0 | 44.3 | 41.9 | 31.9 | 25.9 | 8.4 | -1.3 | 26.0 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1968 | 1976 | 1983 | 1980 | 1965 | 1984 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 0.60 | 0.41 | 0.75 | 1.06 | 1.72 | 2.19 | 1.24 | 1.43 | 1.30 | 0.69 | 0.62 | 0.62 | 12.63 |
| Highest Precipitation (in.) | 1.50 | 1.38 | 1.95 | 2.48 | 4.50 | 5.06 | 3.86 | 3.96 | 3.53 | 3.21 | 1.72 | 2.79 | 19.55 |
| Year Highest Occurred | 1969 | 1986 | 1983 | 1979 | 1980 | 1964 | 1975 | 1983 | 1980 | 1975 | 1968 | 1964 | 1975 |
| Lowest Precipitation (in.) | 0.02 | 0.00 | 0.24 | 0.13 | 0.34 | 0.30 | 0.21 | 0.02 | 0.04 | 0.00 | 0.06 | 0.15 | 7.51 |
| Year Lowest Occurred | 1981 | 1977 | 1978 | 1985 | 1979 | 1974 | 1966 | 1967 | 1987 | 1987 | 1976 | 1965 | 1974 |
| Heating Degree Days (F) | 1389. | 1106. | 1060. | 768. | 527. | 273. | 102. | 147. | 402. | 688. | 1053. | 1370. | 8885. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 12. | 46. | 45. | 12. | 0. | 0. | 0. | 115. |