What is the weather like in Indiana Dunes National Park vs Indianapolis in September?

In September, Indiana Dunes National Park averages 24°C high / 16°C low with about 73 mm of rain; Indianapolis averages 27°C high / 16°C low with about 64 mm.

Indiana Dunes National Park vs Indianapolis in September

Indianapolis is the better pick in September — 89 vs 84 on SeasonMap's comfort score. Indianapolis is warm, a little rain, clean air, while Indiana Dunes National Park is warm, a little rain, clean air.

Indiana Dunes National Park vs Indianapolis — September climate, side by side

	🇺🇸 Indiana Dunes National Park	🇺🇸 Indianapolis
Comfort score	84/100 (A)	89/100 (A)
Feels-like high	25°C	28°C
Avg high / low	24° / 16°	27° / 16°
Rainfall	73 mm	64 mm
Rainy days	8	5
Humidity	75%	68%
Air quality (AQI)	43	42

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

Month by month

Indiana Dunes National Park 🇺🇸 United Stateswarm, a little rain, clean air · best May84
Indianapolis 🇺🇸 United Stateswarm, a little rain, clean air · best September89

Indiana Dunes National Park vs Indianapolis in September — FAQ

Is September better in Indiana Dunes National Park or Indianapolis?: Indianapolis is the better pick in September — 89 vs 84 on SeasonMap's comfort score. Indianapolis is warm, a little rain, clean air, while Indiana Dunes National Park is warm, a little rain, clean air.
What is the weather like in Indiana Dunes National Park vs Indianapolis in September?: In September, Indiana Dunes National Park averages 24°C high / 16°C low with about 73 mm of rain; Indianapolis averages 27°C high / 16°C low with about 64 mm.