| Boulder, CO | Grass Valley, CA | United States |
Rainfall | 18.1 | 55 | 38.1 |
Snowfall | 71.1 | 11.3 | 27.8 |
Precipitation Days | 88 | 83.8 | 106.2 |
Sunny | 245 | 243 | 205 |
Avg. July High | 88.1 | 87.2 | 85.8 |
Avg. Jan. Low | 18.9 | 34.2 | 21.7 |
Comfort Index (higher=better) | 7.1 | 7.9 | 7 |
UV Index | 5.8 | 5 | 4.3 |
Elevation ft. | 5328 | 2411 | 2443 |