| | Monticello, IL | Mill Valley, CA | United States |
| Rainfall | 39.8 | 40.6 | 38.1 |
| Snowfall | 15.1 | 0 | 27.8 |
| Precipitation Days | 101.2 | 78.1 | 106.2 |
| Sunny | 197 | 255 | 205 |
| Avg. July High | 84.2 | 76.5 | 85.8 |
| Avg. Jan. Low | 16.3 | 42.9 | 21.7 |
| Comfort Index (higher=better) | 7.1 | 8.4 | 7 |
| UV Index | 4 | 5.2 | 4.3 |
| Elevation ft. | 659 | 82 | 2443 |