| St. Charles, MO | Tucson, AZ | United States |
Rainfall | 42 | 12 | 38 |
Snowfall | 14 | 0 | 28 |
Precipitation | 106 | 52 | 106 |
Sunny | 202 | 286 | 205 |
Avg. July High | 88 | 100 | 86 |
Avg. Jan. Low | 21 | 39 | 22 |
Comfort Index (higher=better) | 7.2 | 7.5 | 7 |
UV Index | 4.4 | 6.5 | 4.3 |
Elevation | 492 | 2490 | 2443 |