What is the weather like in Chicago vs St. Augustine in September?

In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; St. Augustine averages 29°C high / 23°C low with about 143 mm.

Chicago vs St. Augustine in September

Chicago is the better pick in September — 91 vs 63 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while St. Augustine is sweltering, rainy, clean air.

Chicago vs St. Augustine — September climate, side by side

	Chicago	St. Augustine
Comfort score	91/100 (S)	63/100 (C)
Feels-like high	25°C	34°C
Avg high / low	25° / 17°	29° / 23°
Rainfall	63 mm	143 mm
Rainy days	7	13
Humidity	73%	81%
Air quality (AQI)	45	44

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

Chicago vs St. Augustine in September — FAQ

Is September better in Chicago or St. Augustine?: Chicago is the better pick in September — 91 vs 63 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while St. Augustine is sweltering, rainy, clean air.
What is the weather like in Chicago vs St. Augustine in September?: In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; St. Augustine averages 29°C high / 23°C low with about 143 mm.