| | Hermosa, SD | Keystone, SD | United States |
| Rainfall | 18 | 20.1 | 38.1 |
| Snowfall | 35.2 | 54.1 | 27.8 |
| Precipitation Days | 78.4 | 90.9 | 106.2 |
| Sunny | 226 | 222 | 205 |
| Avg. July High | 85.3 | 81.2 | 85.8 |
| Avg. Jan. Low | 14.2 | 12.1 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 6.7 | 7 |
| UV Index | 4.7 | 4.6 | 4.3 |
| Elevation ft. | 3327 | 4331 | 2443 |