| | Vashon, WA | Richland, WA | United States |
| Rainfall | 39.9 | 8.1 | 38.1 |
| Snowfall | 3.9 | 3.6 | 27.8 |
| Precipitation Days | 156.1 | 82.8 | 106.2 |
| Sunny | 140 | 196 | 205 |
| Avg. July High | 76.2 | 89.9 | 85.8 |
| Avg. Jan. Low | 36.9 | 28.7 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7.5 | 7 |
| UV Index | 2.6 | 3.2 | 4.3 |
| Elevation ft. | 381 | 384 | 2443 |