| CLIMATE | Littleton | Castle Rock | United States |
| Rainfall (in.) | 16.4 | 17.1 | 36.5 |
| Snowfall (in.) | 65.7 | 58.9 | 25 |
| Precipitation Days | 71 | 66 | 100 |
| Sunny Days | 246 | 243 | 205 |
| Avg. July High | 85 | 86 | 86.5 |
| Avg. Jan. Low | 15.3 | 13.3 | 20.5 |
| Comfort Index (higher=better) | 57 | 58 | 44 |
| UV Index | 5.2 | 4.8 | 4.3 |
| Elevation ft. | 5,420 | 6,356 | 1,443 |