| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 37.5 | 45.8 | 55.1 | 64.6 | 74.3 | 83.6 | 93.3 | 91.6 | 80.4 | 67.5 | 50.2 | 38.5 | 65.2 |
| Highest Mean Max. Temperature (F) | 43.8 | 54.0 | 61.3 | 75.6 | 79.1 | 91.8 | 99.2 | 99.3 | 88.9 | 77.3 | 57.5 | 44.7 | 68.0 |
| Year Highest Occurred | 1967 | 1963 | 1986 | 1987 | 1966 | 1961 | 1988 | 1967 | 1990 | 1988 | 1990 | 1989 | 1987 |
| Lowest Mean Max. Temperature (F) | 25.6 | 34.8 | 49.8 | 54.9 | 65.3 | 77.5 | 87.4 | 83.6 | 72.9 | 61.5 | 44.1 | 29.1 | 62.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1964 | 1982 | 1976 | 1986 | 1969 | 1982 | 1985 | 1984 |
| Mean Temperature (F) | 28.9 | 35.6 | 42.4 | 49.5 | 58.3 | 66.9 | 74.7 | 73.2 | 62.8 | 51.1 | 39.1 | 29.8 | 51.0 |
| Highest Mean Temperature (F) | 35.8 | 42.9 | 48.1 | 56.5 | 62.5 | 73.3 | 78.4 | 78.4 | 70.4 | 58.7 | 42.8 | 37.7 | 53.0 |
| Year Highest Occurred | 1967 | 1963 | 1986 | 1990 | 1987 | 1961 | 1988 | 1967 | 1990 | 1988 | 1990 | 1977 | 1987 |
| Lowest Mean Temperature (F) | 15.6 | 24.5 | 38.0 | 43.2 | 53.5 | 62.0 | 70.1 | 67.5 | 56.6 | 47.2 | 30.1 | 16.8 | 47.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1967 | 1977 | 1984 | 1983 | 1985 | 1985 | 1969 | 1985 | 1985 | 1985 |
| Mean Min. Temperature (F) | 20.3 | 25.4 | 29.7 | 34.3 | 42.2 | 50.2 | 56.0 | 54.8 | 45.2 | 34.6 | 27.9 | 21.0 | 36.8 |
| Highest Mean Min. Temperature (F) | 27.9 | 31.8 | 34.9 | 38.6 | 46.8 | 55.6 | 60.7 | 59.1 | 51.9 | 40.9 | 32.5 | 30.8 | 38.8 |
| Year Highest Occurred | 1981 | 1963 | 1986 | 1990 | 1987 | 1977 | 1975 | 1961 | 1990 | 1979 | 1966 | 1977 | 1973 |
| Lowest Mean Min. Temperature (F) | 5.6 | 14.1 | 24.6 | 30.1 | 38.3 | 45.5 | 51.6 | 47.2 | 37.2 | 29.9 | 15.0 | 4.4 | 29.7 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1970 | 1985 | 1985 | 1981 | 1985 | 1985 | 1985 | 1985 | 1985 | 1985 |
| Mean Precipitation (in.) | 1.13 | 0.85 | 0.98 | 0.80 | 1.02 | 0.95 | 0.38 | 0.57 | 0.53 | 0.65 | 1.32 | 1.41 | 10.59 |
| Highest Precipitation (in.) | 3.75 | 4.35 | 3.14 | 3.66 | 3.15 | 3.01 | 1.85 | 2.09 | 1.66 | 2.09 | 3.14 | 3.97 | 19.07 |
| Year Highest Occurred | 1970 | 1986 | 1983 | 1978 | 1980 | 1967 | 1974 | 1979 | 1986 | 1962 | 1983 | 1981 | 1983 |
| Lowest Precipitation (in.) | 0.07 | 0.00 | 0.24 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.13 | 0.00 | 6.50 |
| Year Lowest Occurred | 1985 | 1964 | 1977 | 1977 | 1974 | 1985 | 1990 | 1988 | 1990 | 1988 | 1969 | 1989 | 1990 |
| Heating Degree Days (F) | 1119. | 823. | 701. | 465. | 216. | 69. | 0. | 15. | 144. | 431. | 777. | 1091. | 5851. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 8. | 126. | 301. | 269. | 78. | 0. | 0. | 0. | 782. |