SeasonMapChicago vs Philadelphia in September
Chicago is the better pick in September — 91 vs 81 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Philadelphia is warm, rainy, clean air.
Chicago vs Philadelphia — September climate, side by side
| Chicago | Philadelphia | |
|---|---|---|
| Comfort score | 91/100 (S) | 81/100 (A) |
| Feels-like high | 25°C | 28°C |
| Avg high / low | 25° / 17° | 27° / 18° |
| Rainfall | 63 mm | 101 mm |
| Rainy days | 7 | 7 |
| Humidity | 73% | 72% |
| Air quality (AQI) | 45 | 45 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
Chicago vs Philadelphia in September — FAQ
- Is September better in Chicago or Philadelphia?
- Chicago is the better pick in September — 91 vs 81 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Philadelphia is warm, rainy, clean air.
- What is the weather like in Chicago vs Philadelphia in September?
- In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; Philadelphia averages 27°C high / 18°C low with about 101 mm.