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

In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; Philadelphia averages 21°C high / 12°C low with about 80 mm.

Chicago vs Philadelphia in October

Philadelphia is the better pick in October — 85 vs 73 on SeasonMap's comfort score. Philadelphia is nice, a little rain, clean air, while Chicago is nice, rainy, clean air.

Chicago vs Philadelphia — October climate, side by side

	Chicago	Philadelphia
Comfort score	73/100 (B)	85/100 (A)
Feels-like high	16°C	19°C
Avg high / low	18° / 9°	21° / 12°
Rainfall	117 mm	80 mm
Rainy days	10	7
Humidity	70%	71%
Air quality (AQI)	35	42

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

Chicago vs Philadelphia in October — FAQ

Is October better in Chicago or Philadelphia?: Philadelphia is the better pick in October — 85 vs 73 on SeasonMap's comfort score. Philadelphia is nice, a little rain, clean air, while Chicago is nice, rainy, clean air.
What is the weather like in Chicago vs Philadelphia in October?: In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; Philadelphia averages 21°C high / 12°C low with about 80 mm.