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

In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; Jacksonville averages 32°C high / 24°C low with about 134 mm.

Chicago vs Jacksonville in September

Chicago is the better pick in September — 91 vs 62 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Jacksonville is sweltering, rainy, clean air.

Chicago vs Jacksonville — September climate, side by side

	Chicago	Jacksonville
Comfort score	91/100 (S)	62/100 (C)
Feels-like high	25°C	35°C
Avg high / low	25° / 17°	32° / 24°
Rainfall	63 mm	134 mm
Rainy days	7	11
Humidity	73%	82%
Air quality (AQI)	45	47

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

Chicago vs Jacksonville in September — FAQ

Is September better in Chicago or Jacksonville?: Chicago is the better pick in September — 91 vs 62 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Jacksonville is sweltering, rainy, clean air.
What is the weather like in Chicago vs Jacksonville in September?: In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; Jacksonville averages 32°C high / 24°C low with about 134 mm.