| | Prospect Heights, IL | Portsmouth, RI | United States |
| Rainfall | 36.2 | 47.8 | 38.1 |
| Snowfall | 36 | 32.1 | 27.8 |
| Precipitation Days | 125.3 | 126.8 | 106.2 |
| Sunny | 187 | 201 | 205 |
| Avg. July High | 83.1 | 80.1 | 85.8 |
| Avg. Jan. Low | 16.7 | 22.8 | 21.7 |
| Comfort Index (higher=better) | 6.9 | 7.1 | 7 |
| UV Index | 3.6 | 3.6 | 4.3 |
| Elevation ft. | 669 | 141 | 2443 |