What is the weather like in Chicago vs San Antonio in October?

In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; San Antonio averages 29°C high / 17°C low with about 54 mm.

Chicago vs San Antonio in October

San Antonio is the better pick in October — 83 vs 73 on SeasonMap's comfort score. San Antonio is hot, a little rain, clean air, while Chicago is nice, rainy, clean air.

Chicago vs San Antonio — October climate, side by side

	Chicago	San Antonio
Comfort score	73/100 (B)	83/100 (A)
Feels-like high	16°C	30°C
Avg high / low	18° / 9°	29° / 17°
Rainfall	117 mm	54 mm
Rainy days	10	5
Humidity	70%	63%
Air quality (AQI)	35	37

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

Chicago vs San Antonio in October — FAQ

Is October better in Chicago or San Antonio?: San Antonio is the better pick in October — 83 vs 73 on SeasonMap's comfort score. San Antonio is hot, a little rain, clean air, while Chicago is nice, rainy, clean air.
What is the weather like in Chicago vs San Antonio in October?: In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; San Antonio averages 29°C high / 17°C low with about 54 mm.