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

In May, Chicago averages 20°C high / 10°C low with about 109 mm of rain; Gateway Arch National Park averages 26°C high / 13°C low with about 143 mm.

Chicago vs Gateway Arch National Park in May

Chicago is the better pick in May — 83 vs 79 on SeasonMap's comfort score. Chicago is nice, rainy, muggy air, while Gateway Arch National Park is warm, rainy.

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

	🇺🇸 Chicago	🇺🇸 Gateway Arch National Park
Comfort score	83/100 (A)	79/100 (B)
Feels-like high	19°C	26°C
Avg high / low	20° / 10°	26° / 13°
Rainfall	109 mm	143 mm
Rainy days	11	11
Humidity	75%	70%
Air quality (AQI)	55	53

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

Month by month

Chicago vs Gateway Arch National Park in May — FAQ

Is May better in Chicago or Gateway Arch National Park?: Chicago is the better pick in May — 83 vs 79 on SeasonMap's comfort score. Chicago is nice, rainy, muggy air, while Gateway Arch National Park is warm, rainy.
What is the weather like in Chicago vs Gateway Arch National Park in May?: In May, Chicago averages 20°C high / 10°C low with about 109 mm of rain; Gateway Arch National Park averages 26°C high / 13°C low with about 143 mm.