| | Larkspur, CA | Piedmont, CA | United States |
| Rainfall | 40.6 | 25.4 | 38.1 |
| Snowfall | 0 | 0 | 27.8 |
| Precipitation Days | 77.8 | 67.3 | 106.2 |
| Sunny | 263 | 264 | 205 |
| Avg. July High | 78.1 | 72.4 | 85.8 |
| Avg. Jan. Low | 42 | 44.3 | 21.7 |
| Comfort Index (higher=better) | 8.5 | 8.7 | 7 |
| UV Index | 5.2 | 5.4 | 4.3 |
| Elevation ft. | 33 | 331 | 2443 |