| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Average Max. Temperature (F) | 33.4 | 38.8 | 46.7 | 55.8 | 64.8 | 73.3 | 81.1 | 80.9 | 70.8 | 58.3 | 41.2 | 33.8 | 56.7 |
| Average Min. Temperature (F) | 12.1 | 16.7 | 23.1 | 30.1 | 37.7 | 44.0 | 48.4 | 47.4 | 39.6 | 31.2 | 20.0 | 12.5 | 30.3 |
| Average Total Precipitation (in.) | 0.55 | 0.62 | 1.10 | 1.66 | 2.64 | 2.60 | 1.51 | 1.39 | 1.60 | 1.35 | 0.90 | 0.67 | 16.58 |