| Chatham, MA | Great Falls, MT | United States |
Rainfall | 48 | 14 | 38 |
Snowfall | 23 | 58 | 28 |
Precipitation | 109 | 90 | 106 |
Sunny | 201 | 188 | 205 |
Avg. July High | 78 | 85 | 86 |
Avg. Jan. Low | 23 | 17 | 22 |
Comfort Index (higher=better) | 7.1 | 6.8 | 7 |
UV Index | 3.4 | 3.8 | 4.3 |
Elevation | 13 | 3330 | 2443 |