| | Union, WA | Carson, WA | United States |
| Rainfall | 70.1 | 73.5 | 38.1 |
| Snowfall | 3.6 | 16.1 | 27.8 |
| Precipitation Days | 160.8 | 161.9 | 106.2 |
| Sunny | 136 | 145 | 205 |
| Avg. July High | 75.6 | 80.5 | 85.8 |
| Avg. Jan. Low | 34.5 | 29.6 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 6.7 | 7 |
| UV Index | 2.6 | 2.9 | 4.3 |
| Elevation ft. | 148 | 469 | 2443 |