SeasonMapChicago vs Indianapolis in September
Chicago and Indianapolis are nearly tied in September — 91 vs 89 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air; Indianapolis is warm, a little rain, clean air.
Chicago vs Indianapolis — September climate, side by side
| Chicago | Indianapolis | |
|---|---|---|
| Comfort score | 91/100 (S) | 89/100 (A) |
| Feels-like high | 25°C | 28°C |
| Avg high / low | 25° / 17° | 27° / 16° |
| Rainfall | 63 mm | 64 mm |
| Rainy days | 7 | 5 |
| Humidity | 73% | 68% |
| Air quality (AQI) | 45 | 42 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
Chicago vs Indianapolis in September — FAQ
- Is September better in Chicago or Indianapolis?
- Chicago and Indianapolis are nearly tied in September — 91 vs 89 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air; Indianapolis is warm, a little rain, clean air.
- What is the weather like in Chicago vs Indianapolis in September?
- In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; Indianapolis averages 27°C high / 16°C low with about 64 mm.