| Castro Valley, CA | Martinez, CA | United States |
Rainfall | 21 | 18 | 38 |
Snowfall | 0 | 0 | 28 |
Precipitation | 66 | 61 | 106 |
Sunny | 261 | 265 | 205 |
Avg. July High | 76 | 88 | 86 |
Avg. Jan. Low | 42 | 39 | 22 |
Comfort Index (higher=better) | 8.6 | 8.5 | 7 |
UV Index | 5.4 | 5.4 | 4.3 |
Elevation | 161 | 23 | 2443 |