| | Grantwood Village, MO | Affton, MO | United States |
| Rainfall | 43.8 | 43.8 | 38.1 |
| Snowfall | 15.9 | 15.9 | 27.8 |
| Precipitation Days | 104.7 | 104.7 | 106.2 |
| Sunny | 205 | 202 | 205 |
| Avg. July High | 88.5 | 88.5 | 85.8 |
| Avg. Jan. Low | 22.7 | 22.7 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.2 | 7 |
| UV Index | 4.3 | 4.3 | 4.3 |
| Elevation ft. | 512 | 620 | 2443 |