Weather in Chicago, Illinois, United States in August
In an average August, Chicago sees a daily high around 76°F and a low around 67°F, based on 1981–2026 of local climate records.
| Average high | 76°F |
|---|---|
| Typical high range | 70°F to 82°F |
| Average low | 67°F |
| Typical low range | 61°F to 72°F |
| Average daily precipitation | 0.10 in |
August records
The most extreme August on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
91°F
1988-08-16
Lowest
60°F
1994-08-09
Low
Highest
79°F
2006-08-02
Lowest
50°F
1986-08-28
Feels-like
Highest
113°F
2023-08-24
Lowest
45°F
1986-08-28
Humidity
Highest
22.5 g/m³
2007-08-07
Lowest
6.6 g/m³
1986-08-28
Wind
Highest
33 mph
2009-08-20
Lowest
4 mph
2019-08-03
Precip
Wettest
10.95 in
2007
Driest
1.96 in
2017
See Chicago's live weather grade →
Visiting Chicago in August? See how its comfort stacks up against where you live.
Compare Chicago with your city →