| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Average Max. Temperature (F) | 37.7 | 39.4 | 46.2 | 55.8 | 66.4 | 75.9 | 81.8 | 80.5 | 73.4 | 63.1 | 50.9 | 42.9 | 59.7 |
| Average Min. Temperature (F) | 22.7 | 24.5 | 31.3 | 40.1 | 49.6 | 59.0 | 65.6 | 64.7 | 57.5 | 47.1 | 36.7 | 28.4 | 44.1 |
| Average Total Precipitation (in.) | 4.59 | 4.10 | 4.80 | 4.25 | 3.99 | 3.62 | 3.71 | 4.36 | 3.97 | 4.04 | 4.57 | 4.96 | 50.96 |