Chicago in December

Average high

3.5°C

Average low

-2.7°C

Rainfall

—

— wet days

Comfort score

out of 100

December in Chicago averages a daily high of 3.5°C with nights around -2.7°C. A hard month to visit for comfort alone.

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

Based on CHICAGO NORTHERLY ISLAND, IL US (3.4km), 1995–2024. 20 years of December data.