| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 36.2 | 47.5 | 58.2 | 68.7 | 79.0 | 90.4 | 96.5 | 93.4 | 84.0 | 70.8 | 54.6 | 40.7 | 68.3 |
| Highest Mean Max. Temperature (F) | 51.4 | 55.9 | 67.6 | 77.3 | 86.3 | 98.0 | 100.4 | 97.2 | 93.2 | 78.9 | 59.5 | 50.8 | 71.9 |
| Year Highest Occurred | 1981 | 1977 | 1972 | 1989 | 1984 | 1977 | 1989 | 1985 | 1979 | 1988 | 1989 | 1980 | 1981 |
| Lowest Mean Max. Temperature (F) | 20.2 | 29.7 | 51.9 | 61.9 | 72.7 | 82.5 | 92.0 | 87.2 | 75.1 | 61.9 | 47.3 | 29.1 | 65.0 |
| Year Lowest Occurred | 1973 | 1979 | 1979 | 1975 | 1975 | 1967 | 1965 | 1968 | 1961 | 1969 | 1979 | 1978 | 1973 |
| Mean Temperature (F) | 22.3 | 32.8 | 43.0 | 52.3 | 62.1 | 71.6 | 78.5 | 75.7 | 65.6 | 53.2 | 39.4 | 27.0 | 52.0 |
| Highest Mean Temperature (F) | 33.8 | 39.8 | 49.3 | 58.5 | 68.4 | 76.9 | 80.7 | 79.2 | 70.3 | 59.7 | 44.5 | 34.5 | 55.0 |
| Year Highest Occurred | 1981 | 1986 | 1986 | 1989 | 1984 | 1977 | 1988 | 1986 | 1979 | 1988 | 1965 | 1980 | 1981 |
| Lowest Mean Temperature (F) | 5.4 | 14.8 | 37.3 | 45.7 | 56.5 | 65.3 | 75.0 | 71.7 | 59.7 | 47.8 | 31.4 | 17.6 | 48.5 |
| Year Lowest Occurred | 1973 | 1979 | 1964 | 1975 | 1975 | 1975 | 1962 | 1975 | 1965 | 1969 | 1979 | 1978 | 1975 |
| Mean Min. Temperature (F) | 8.4 | 18.0 | 27.7 | 35.8 | 45.1 | 52.7 | 60.5 | 57.9 | 47.1 | 35.6 | 24.2 | 13.2 | 35.5 |
| Highest Mean Min. Temperature (F) | 21.9 | 26.1 | 34.3 | 40.5 | 50.4 | 59.2 | 63.2 | 63.6 | 51.6 | 44.4 | 30.4 | 20.3 | 38.8 |
| Year Highest Occurred | 1980 | 1980 | 1978 | 1990 | 1984 | 1988 | 1984 | 1971 | 1983 | 1972 | 1965 | 1982 | 1986 |
| Lowest Mean Min. Temperature (F) | -9.4 | -0.2 | 22.2 | 29.5 | 40.2 | 45.2 | 57.1 | 51.8 | 42.8 | 28.0 | 15.4 | 6.1 | 31.5 |
| Year Lowest Occurred | 1973 | 1979 | 1976 | 1975 | 1975 | 1975 | 1978 | 1975 | 1965 | 1975 | 1979 | 1978 | 1975 |
| Mean Precipitation (in.) | 0.40 | 0.32 | 0.59 | 0.50 | 0.63 | 0.40 | 0.57 | 0.75 | 0.79 | 0.89 | 0.45 | 0.41 | 6.70 |
| Highest Precipitation (in.) | 1.67 | 1.33 | 2.55 | 1.50 | 2.12 | 1.80 | 2.75 | 2.09 | 3.41 | 4.39 | 1.89 | 1.28 | 12.20 |
| Year Highest Occurred | 1978 | 1980 | 1979 | 1985 | 1973 | 1969 | 1986 | 1984 | 1961 | 1972 | 1978 | 1965 | 1985 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.91 |
| Year Lowest Occurred | 1981 | 1974 | 1974 | 1982 | 1974 | 1978 | 1988 | 1975 | 1979 | 1964 | 1989 | 1989 | 1989 |
| Heating Degree Days (F) | 1324. | 902. | 682. | 388. | 133. | 25. | 0. | 0. | 76. | 371. | 768. | 1178. | 5847. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 7. | 43. | 223. | 419. | 332. | 94. | 0. | 0. | 0. | 1118. |