| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Average Max. Temperature (F) | 32.2 | 35.0 | 39.1 | 46.5 | 55.8 | 67.4 | 73.9 | 72.6 | 64.1 | 52.4 | 37.6 | 33.4 | 51.0 |
| Average Min. Temperature (F) | 6.2 | 8.8 | 13.6 | 20.6 | 28.5 | 36.0 | 41.6 | 40.8 | 33.7 | 24.8 | 13.6 | 7.7 | 23.1 |
| Average Total Precipitation (in.) | 1.55 | 1.88 | 2.71 | 2.52 | 2.41 | 1.09 | 1.25 | 1.98 | 1.75 | 2.00 | 2.17 | 1.68 | 22.97 |