| | Fort Gratiot charter, MI | Lewiston, MI | United States |
| Rainfall | 33.2 | 30 | 38.1 |
| Snowfall | 36.8 | 131.7 | 27.8 |
| Precipitation Days | 123.3 | 133.8 | 106.2 |
| Sunny | 177 | 166 | 205 |
| Avg. July High | 80.3 | 79.7 | 85.8 |
| Avg. Jan. Low | 16.3 | 9.1 | 21.7 |
| Comfort Index (higher=better) | 6.7 | 5.9 | 7 |
| UV Index | 3.5 | 3.3 | 4.3 |
| Elevation ft. | 615 | 1243 | 2443 |