| | Washington, IL | Maryville, IL | United States |
| Rainfall | 38.7 | 43 | 38.1 |
| Snowfall | 23.5 | 11.6 | 27.8 |
| Precipitation Days | 108.4 | 98.6 | 106.2 |
| Sunny | 194 | 205 | 205 |
| Avg. July High | 86 | 88.8 | 85.8 |
| Avg. Jan. Low | 15.6 | 22.4 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 7.2 | 7 |
| UV Index | 3.9 | 4.1 | 4.3 |
| Elevation ft. | 761 | 577 | 2443 |