| CLIMATE | Chantilly | Louisville | United States |
| Rainfall (in.) | 42.8 | 19.2 | 36.5 |
| Snowfall (in.) | 21.4 | 83.1 | 25 |
| Precipitation Days | 120 | 93 | 100 |
| Sunny Days | 197 | 242 | 205 |
| Avg. July High | 87 | 88 | 86.5 |
| Avg. Jan. Low | 21.2 | 20.4 | 20.5 |
| Comfort Index (higher=better) | 42 | 64 | 44 |
| UV Index | 4 | 5.8 | 4.3 |
| Elevation ft. | 359 | 5,451 | 1,443 |