What is the weather like in Chicago vs Indiana Dunes National Park in October?

In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; Indiana Dunes National Park averages 17°C high / 10°C low with about 123 mm.

Chicago vs Indiana Dunes National Park in October

Indiana Dunes National Park is the better pick in October — 80 vs 73 on SeasonMap's comfort score. Indiana Dunes National Park is cool, rainy, clean air, while Chicago is nice, rainy, clean air.

Chicago vs Indiana Dunes National Park — October climate, side by side

	🇺🇸 Chicago	🇺🇸 Indiana Dunes National Park
Comfort score	73/100 (B)	80/100 (A)
Feels-like high	16°C	15°C
Avg high / low	18° / 9°	17° / 10°
Rainfall	117 mm	123 mm
Rainy days	10	11
Humidity	70%	72%
Air quality (AQI)	35	33

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

Month by month

Chicago vs Indiana Dunes National Park in October — FAQ

Is October better in Chicago or Indiana Dunes National Park?: Indiana Dunes National Park is the better pick in October — 80 vs 73 on SeasonMap's comfort score. Indiana Dunes National Park is cool, rainy, clean air, while Chicago is nice, rainy, clean air.
What is the weather like in Chicago vs Indiana Dunes National Park in October?: In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; Indiana Dunes National Park averages 17°C high / 10°C low with about 123 mm.