| | Eureka, IL | Creve Coeur, IL | United States |
| Rainfall | 38.5 | 37.7 | 38.1 |
| Snowfall | 23.4 | 24.4 | 27.8 |
| Precipitation Days | 108.1 | 111.9 | 106.2 |
| Sunny | 189 | 192 | 205 |
| Avg. July High | 86.1 | 85.6 | 85.8 |
| Avg. Jan. Low | 14.7 | 15.5 | 21.7 |
| Comfort Index (higher=better) | 7 | 7 | 7 |
| UV Index | 3.7 | 3.9 | 4.3 |
| Elevation ft. | 768 | 686 | 2443 |