| | Melville, NY | Markham, IL | United States |
| Rainfall | 46.3 | 38.9 | 38.1 |
| Snowfall | 23.1 | 31.4 | 27.8 |
| Precipitation Days | 113.6 | 123.6 | 106.2 |
| Sunny | 205 | 192 | 205 |
| Avg. July High | 83 | 84.2 | 85.8 |
| Avg. Jan. Low | 24.4 | 18.2 | 21.7 |
| Comfort Index (higher=better) | 7.3 | 7 | 7 |
| UV Index | 3.7 | 3.6 | 4.3 |
| Elevation ft. | 135 | 620 | 2443 |