| | Castle Pines, CO | Niwot, CO | United States |
| Rainfall | 18.1 | 14.9 | 38.1 |
| Snowfall | 75.5 | 36.9 | 27.8 |
| Precipitation Days | 72.6 | 79.7 | 106.2 |
| Sunny | 245 | 240 | 205 |
| Avg. July High | 85.4 | 89.1 | 85.8 |
| Avg. Jan. Low | 18.5 | 12.6 | 21.7 |
| Comfort Index (higher=better) | 7.2 | 7.2 | 7 |
| UV Index | 4.8 | 5.8 | 4.3 |
| Elevation ft. | 6558 | 5095 | 2443 |