| | Roundup, MT | Glendive, MT | United States |
| Rainfall | 14.1 | 13.5 | 38.1 |
| Snowfall | 32.9 | 22.9 | 27.8 |
| Precipitation Days | 73.8 | 73.6 | 106.2 |
| Sunny | 198 | 202 | 205 |
| Avg. July High | 88.1 | 87.6 | 85.8 |
| Avg. Jan. Low | 13 | 7.3 | 21.7 |
| Comfort Index (higher=better) | 7 | 6.9 | 7 |
| UV Index | 3.8 | 3.5 | 4.3 |
| Elevation ft. | 3215 | 2077 | 2443 |