What is the weather like in Chicago vs Seattle in October?

In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; Seattle averages 16°C high / 7°C low with about 76 mm.

Chicago vs Seattle in October

Chicago and Seattle are nearly tied in October — 73 vs 72 on SeasonMap's comfort score. Chicago is nice, rainy, clean air; Seattle is cool, a little rain, clean air.

Chicago vs Seattle — October climate, side by side

	Chicago	Seattle
Comfort score	73/100 (B)	72/100 (B)
Feels-like high	16°C	14°C
Avg high / low	18° / 9°	16° / 7°
Rainfall	117 mm	76 mm
Rainy days	10	9
Humidity	70%	83%
Air quality (AQI)	35	36

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

Chicago vs Seattle in October — FAQ

Is October better in Chicago or Seattle?: Chicago and Seattle are nearly tied in October — 73 vs 72 on SeasonMap's comfort score. Chicago is nice, rainy, clean air; Seattle is cool, a little rain, clean air.
What is the weather like in Chicago vs Seattle in October?: In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; Seattle averages 16°C high / 7°C low with about 76 mm.