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

In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; Toronto averages 15°C high / 8°C low with about 67 mm.

Chicago vs Toronto in October

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

Chicago vs Toronto — October climate, side by side

	🇺🇸 Chicago	🇨🇦 Toronto
Comfort score	73/100 (B)	73/100 (B)
Feels-like high	16°C	14°C
Avg high / low	18° / 9°	15° / 8°
Rainfall	117 mm	67 mm
Rainy days	10	9
Humidity	70%	74%
Air quality (AQI)	35	37

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

Month by month

Chicago 🇺🇸 United Statesnice, rainy, clean air · best September73
Toronto 🇨🇦 Canadacool, a little rain, clean air · best September73

Chicago vs Toronto in October — FAQ

Is October better in Chicago or Toronto?: Chicago and Toronto are nearly tied in October — 73 vs 73 on SeasonMap's comfort score. Chicago is nice, rainy, clean air; Toronto is cool, a little rain, clean air.
What is the weather like in Chicago vs Toronto in October?: In October, Chicago averages 18°C high / 9°C low with about 117 mm of rain; Toronto averages 15°C high / 8°C low with about 67 mm.