| | Lewistown, MT | Carter, MT | United States |
| Rainfall | 15.8 | 12.8 | 38.1 |
| Snowfall | 72.3 | 42.3 | 27.8 |
| Precipitation Days | 102.6 | 73.4 | 106.2 |
| Sunny | 196 | 185 | 205 |
| Avg. July High | 81 | 86.1 | 85.8 |
| Avg. Jan. Low | 13.5 | 14 | 21.7 |
| Comfort Index (higher=better) | 6.5 | 7 | 7 |
| UV Index | 3.7 | 3.9 | 4.3 |
| Elevation ft. | 3947 | 3123 | 2443 |