Weather in Chicago in August
In an average August, Chicago sees a daily high around 81°F and a low around 67°F, based on 1980–2026 of local climate records.
| Average high | 81°F |
|---|---|
| Typical high range | 74°F to 88°F |
| Average low | 67°F |
| Typical low range | 60°F to 73°F |
| Average daily precipitation | 0.10 in |
August records
The most extreme August on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
98°F
1988-08-17
Lowest
61°F
2004-08-12
Low
Highest
80°F
2006-08-02
Lowest
48°F
1986-08-28
Feels-like
Highest
136°F
1983-08-19
Lowest
42°F
1986-08-28
Humidity
Highest
24.0 g/m³
2023-08-24
Lowest
7.3 g/m³
1986-08-29
Wind
Highest
23 mph
1983-08-11
Lowest
4 mph
2005-08-08
Gust
Highest
41 mph
2009-08-20
Lowest
8 mph
2021-08-03
Precip
Wettest
9.11 in
1990
Driest
1.26 in
2020
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