| | Petaluma, CA | Georgetown, CA | United States |
| Rainfall | 29.8 | 53.3 | 38.1 |
| Snowfall | 0 | 12.7 | 27.8 |
| Precipitation Days | 74.8 | 70.1 | 106.2 |
| Sunny | 260 | 238 | 205 |
| Avg. July High | 83.7 | 90.2 | 85.8 |
| Avg. Jan. Low | 38.7 | 36.5 | 21.7 |
| Comfort Index (higher=better) | 8.4 | 7.9 | 7 |
| UV Index | 4.9 | 4.8 | 4.3 |
| Elevation ft. | 30 | 2654 | 2443 |