| Custer, SD | Billings, MT | United States |
Rainfall | 19.9 | 14.2 | 38.1 |
Snowfall | 55.3 | 46.3 | 27.8 |
Precipitation Days | 93 | 88.3 | 106.2 |
Sunny | 226 | 205 | 205 |
Avg. July High | 79.5 | 88.3 | 85.8 |
Avg. Jan. Low | 15.5 | 15.8 | 21.7 |
Comfort Index (higher=better) | 6.7 | 7 | 7 |
UV Index | 4.7 | 3.8 | 4.3 |
Elevation ft. | 5315 | 3123 | 2443 |