Chicago Weather in August
United States · 30-year monthly averages
👍 Good time to visit
August in Chicago is warm, with average daytime highs around 28°C (83°F) and nighttime lows near 19°C (66°F). Expect roughly 101mm of precipitation spread over about 8 rainy days, with a moderate amount of rain.
Avg high
28°C
83°F
Avg low
19°C
66°F
Rainfall
101mm
moderate
Rainy days
8
days with ≥1mm
🎒 What to pack
- light summer clothing
- sunscreen and sunglasses
August vs the rest of the year
FAQ
- How hot is Chicago in August?
- August in Chicago is warm, with average daytime highs around 28°C (83°F) and nighttime lows near 19°C (66°F). Expect roughly 101mm of precipitation spread over about 8 rainy days, with a moderate amount of rain.
- Does it rain a lot in Chicago in August?
- Chicago sees around 101mm of precipitation in August on average — moderate by global standards.
- Is August a good time to visit Chicago?
- August is a good month to visit Chicago, with generally agreeable conditions.