What is the weather like in Chicago vs Gateway Arch National Park in August?

In August, Chicago averages 28°C high / 20°C low with about 78 mm of rain; Gateway Arch National Park averages 31°C high / 19°C low with about 115 mm.

Chicago vs Gateway Arch National Park in August

Chicago is the better pick in August — 81 vs 66 on SeasonMap's comfort score. Chicago is hot, a little rain, while Gateway Arch National Park is sweltering, rainy.

Chicago vs Gateway Arch National Park — August climate, side by side

	🇺🇸 Chicago	🇺🇸 Gateway Arch National Park
Comfort score	81/100 (A)	66/100 (C)
Feels-like high	31°C	34°C
Avg high / low	28° / 20°	31° / 19°
Rainfall	78 mm	115 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 vs Gateway Arch National Park in August — FAQ

Is August better in Chicago or Gateway Arch National Park?: Chicago is the better pick in August — 81 vs 66 on SeasonMap's comfort score. Chicago is hot, a little rain, while Gateway Arch National Park is sweltering, rainy.
What is the weather like in Chicago vs Gateway Arch National Park in August?: In August, Chicago averages 28°C high / 20°C low with about 78 mm of rain; Gateway Arch National Park averages 31°C high / 19°C low with about 115 mm.