What is the weather like in Chicago vs Nantucket in September?

In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; Nantucket averages 22°C high / 15°C low with about 106 mm.

Chicago vs Nantucket in September

Chicago is the better pick in September — 91 vs 76 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Nantucket is nice, rainy, clean air.

Chicago vs Nantucket — September climate, side by side

	Chicago	Nantucket
Comfort score	91/100 (S)	76/100 (B)
Feels-like high	25°C	22°C
Avg high / low	25° / 17°	22° / 15°
Rainfall	63 mm	106 mm
Rainy days	7	6
Humidity	73%	84%
Air quality (AQI)	45	48

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

Chicago vs Nantucket in September — FAQ

Is September better in Chicago or Nantucket?: Chicago is the better pick in September — 91 vs 76 on SeasonMap's comfort score. Chicago is warm, a little rain, clean air, while Nantucket is nice, rainy, clean air.
What is the weather like in Chicago vs Nantucket in September?: In September, Chicago averages 25°C high / 17°C low with about 63 mm of rain; Nantucket averages 22°C high / 15°C low with about 106 mm.