| | Lake St. Louis, MO | Madison, MO | United States |
| Rainfall | 42.5 | 42.1 | 38.1 |
| Snowfall | 13.4 | 13.9 | 27.8 |
| Precipitation Days | 109.9 | 97.9 | 106.2 |
| Sunny | 199 | 197 | 205 |
| Avg. July High | 88.2 | 86.9 | 85.8 |
| Avg. Jan. Low | 20.8 | 17.7 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.2 | 7 |
| UV Index | 4.4 | 4.3 | 4.3 |
| Elevation ft. | 564 | 801 | 2443 |