| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Average Max. Temperature (F) | 37.7 | 39.9 | 45.9 | 55.8 | 66.3 | 76.3 | 81.9 | 80.4 | 73.3 | 63.1 | 51.0 | 42.9 | 59.7 |
| Average Min. Temperature (F) | 22.2 | 24.5 | 30.5 | 39.9 | 48.9 | 58.9 | 65.2 | 64.3 | 57.1 | 46.8 | 36.2 | 27.9 | 43.7 |
| Average Total Precipitation (in.) | 4.14 | 4.11 | 4.97 | 4.47 | 4.00 | 3.69 | 3.88 | 4.54 | 3.90 | 3.93 | 4.57 | 4.54 | 50.75 |