What is the weather like in Chicago vs St. Louis in July?

In July, Chicago averages 28°C high / 20°C low with about 117 mm of rain; St. Louis averages 32°C high / 20°C low with about 149 mm.

Chicago vs St. Louis in July

Chicago is the better pick in July — 76 vs 66 on SeasonMap's comfort score. Chicago is hot, rainy, muggy air, while St. Louis is sweltering, rainy.

Chicago vs St. Louis — July climate, side by side

	Chicago	St. Louis
Comfort score	76/100 (B)	66/100 (C)
Feels-like high	31°C	36°C
Avg high / low	28° / 20°	32° / 20°
Rainfall	117 mm	149 mm
Rainy days	9	8
Humidity	76%	71%
Air quality (AQI)	62	73

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

Chicago vs St. Louis in July — FAQ

Is July better in Chicago or St. Louis?: Chicago is the better pick in July — 76 vs 66 on SeasonMap's comfort score. Chicago is hot, rainy, muggy air, while St. Louis is sweltering, rainy.
What is the weather like in Chicago vs St. Louis in July?: In July, Chicago averages 28°C high / 20°C low with about 117 mm of rain; St. Louis averages 32°C high / 20°C low with about 149 mm.