| | Terry, MT | Williston, ND | United States |
| Rainfall | 12.6 | 14.3 | 38.1 |
| Snowfall | 24.8 | 43.8 | 27.8 |
| Precipitation Days | 62.3 | 82.8 | 106.2 |
| Sunny | 201 | 207 | 205 |
| Avg. July High | 87.8 | 84.8 | 85.8 |
| Avg. Jan. Low | 4.6 | 2.1 | 21.7 |
| Comfort Index (higher=better) | 6.8 | 6.5 | 7 |
| UV Index | 3.8 | 3.7 | 4.3 |
| Elevation ft. | 2251 | 1877 | 2443 |