| Walnut Creek, CA | Mercer Island, WA | United States |
Rainfall | 20 | 39 | 38 |
Snowfall | 0 | 5 | 28 |
Precipitation | 62 | 153 | 106 |
Sunny | 262 | 156 | 205 |
Avg. July High | 86 | 76 | 86 |
Avg. Jan. Low | 40 | 37 | 22 |
Comfort Index (higher=better) | 8.5 | 7.5 | 7 |
UV Index | 5.4 | 2.6 | 4.3 |
Elevation | 171 | 335 | 2443 |