| | Portola Valley, CA | Hillsborough, CA | United States |
| Rainfall | 30.7 | 23.3 | 38.1 |
| Snowfall | 0 | 0 | 27.8 |
| Precipitation Days | 72.9 | 81 | 106.2 |
| Sunny | 262 | 260 | 205 |
| Avg. July High | 77.2 | 72.9 | 85.8 |
| Avg. Jan. Low | 40.8 | 42.1 | 21.7 |
| Comfort Index (higher=better) | 8.4 | 8.4 | 7 |
| UV Index | 4.9 | 4.9 | 4.3 |
| Elevation ft. | 459 | 322 | 2443 |