What is the weather like in Charleston vs Chicago in September?

In September, Charleston averages 29°C high / 23°C low with about 142 mm of rain; Chicago averages 25°C high / 17°C low with about 63 mm.

Charleston vs Chicago in September

Chicago is the better pick in September — 91 vs 69 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Charleston is hot, rainy, clean air.

Charleston vs Chicago — September climate, side by side

	Charleston	Chicago
Comfort score	69/100 (C)	91/100 (S)
Feels-like high	32°C	25°C
Avg high / low	29° / 23°	25° / 17°
Rainfall	142 mm	63 mm
Rainy days	6	7
Humidity	80%	73%
Air quality (AQI)	46	45

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Charleston vs Chicago in September — FAQ

Is September better in Charleston or Chicago?: Chicago is the better pick in September — 91 vs 69 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Charleston is hot, rainy, clean air.
What is the weather like in Charleston vs Chicago in September?: In September, Charleston averages 29°C high / 23°C low with about 142 mm of rain; Chicago averages 25°C high / 17°C low with about 63 mm.