Chicago in August

Average high

27.2°C

Average low

20.4°C

Rainfall

—

— wet days

Comfort score

out of 100

August in Chicago averages a daily high of 27.2°C with nights around 20.4°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 August data.