| | Atherton, CA | Metropolis, IL | United States |
| Rainfall | 17.1 | 48.1 | 38.1 |
| Snowfall | 0 | 7.5 | 27.8 |
| Precipitation Days | 60.6 | 107.7 | 106.2 |
| Sunny | 261 | 198 | 205 |
| Avg. July High | 79.7 | 88.5 | 85.8 |
| Avg. Jan. Low | 40.5 | 24.6 | 21.7 |
| Comfort Index (higher=better) | 8.7 | 7.3 | 7 |
| UV Index | 4.9 | 4.1 | 4.3 |
| Elevation ft. | 59 | 361 | 2443 |