| | Millville, DE | New Castle, DE | United States |
| Rainfall | 44.3 | 44.9 | 38.1 |
| Snowfall | 11.3 | 12.4 | 27.8 |
| Precipitation Days | 122.6 | 108.1 | 106.2 |
| Sunny | 206 | 202 | 205 |
| Avg. July High | 85.5 | 86.9 | 85.8 |
| Avg. Jan. Low | 27.8 | 23.9 | 21.7 |
| Comfort Index (higher=better) | 7.4 | 7.3 | 7 |
| UV Index | 3.9 | 4.1 | 4.3 |
| Elevation ft. | 10 | 10 | 2443 |