Chicago in October

Average high

17.2°C

Average low

9.8°C

Rainfall

—

— wet days

Comfort score

out of 100

October in Chicago averages a daily high of 17.2°C with nights around 9.8°C. Comfortable conditions for being outdoors all day.

Across the year, the best time to visit Chicago is May–September.

Based on CHICAGO NORTHERLY ISLAND, IL US (3.4km), 1995–2024. 19 years of October data.