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

In August, Chicago averages 28°C high / 20°C low with about 78 mm of rain; St. Louis averages 31°C high / 19°C low with about 114 mm.

Chicago vs St. Louis in August

Chicago is the better pick in August — 81 vs 73 on SeasonMap's comfort score. Chicago is hot, a little rain, while St. Louis is sweltering, rainy.

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

	🇺🇸 Chicago	🇺🇸 St. Louis
Comfort score	81/100 (A)	73/100 (B)
Feels-like high	31°C	34°C
Avg high / low	28° / 20°	31° / 19°
Rainfall	78 mm	114 mm
Rainy days	8	8
Humidity	74%	71%
Air quality (AQI)	56	64

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

Month by month

Chicago 🇺🇸 United Stateshot, a little rain · best September81
St. Louis 🇺🇸 United Statessweltering, rainy · best May73

Chicago vs St. Louis in August — FAQ

Is August better in Chicago or St. Louis?: Chicago is the better pick in August — 81 vs 73 on SeasonMap's comfort score. Chicago is hot, a little rain, while St. Louis is sweltering, rainy.
What is the weather like in Chicago vs St. Louis in August?: In August, Chicago averages 28°C high / 20°C low with about 78 mm of rain; St. Louis averages 31°C high / 19°C low with about 114 mm.