August weather in Chicago, IL
The average temperature in Chicago in August is 73.7°F (67.4°F–80.0°F). Average precipitation: inches.
August is a summer month in Chicago, and is warmer than the annual average of 50.8°F. Daily temperatures swing about 12.6°F between overnight low and afternoon high. Daylight averages about 13h 41m. For travel, August is one of the best months of the year to visit.
Avg High
80.0°F
Avg Low
67.4°F
Precipitation
in
Daylight
13h 41m
August records in Chicago
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 99.0°F (2006) | 64.9°F (2013) | — |
| August 2 | 96.1°F (2006) | 62.1°F (2009) | — |
| August 3 | 91.9°F (2005) | 64.0°F (2020) | — |
| August 4 | 96.1°F (2018) | 57.0°F (2017) | — |
| August 5 | 93.0°F (2018) | 61.0°F (2017) | — |
| August 6 | 91.0°F (2022) | 66.0°F (2014) | — |
| August 7 | 95.0°F (2012) | 64.9°F (2017) | — |
| August 8 | 91.0°F (2021) | 64.0°F (2017) | — |
| August 9 | 93.9°F (2005) | 61.0°F (2022) | — |
| August 10 | 93.0°F (2021) | 60.1°F (2024) | — |
| August 11 | 93.0°F (2010) | 61.0°F (2012) | — |
| August 12 | 89.1°F (2010) | 61.0°F (2014) | — |
| August 13 | 90.0°F (2010) | 62.1°F (2014) | — |
| August 14 | 89.1°F (2009) | 62.1°F (2013) | — |
| August 15 | 89.1°F (2009) | 59.0°F (2014) | — |
| August 16 | 90.0°F (2015) | 59.0°F (2011) | — |
| August 17 | 91.0°F (2015) | 62.1°F (2012) | — |
| August 18 | 88.0°F (2008) | 62.1°F (2012) | — |
| August 19 | 90.0°F (2010) | 63.0°F (2015) | — |
| August 20 | 93.0°F (2010) | 61.0°F (2015) | — |
| August 21 | 91.0°F (2013) | 60.1°F (2009) | — |
| August 22 | 91.9°F (2007) | 60.1°F (2009) | — |
| August 23 | 91.9°F (2008) | 60.1°F (2009) | — |
| August 24 | 93.9°F (2011) | 57.9°F (2015) | — |
| August 25 | 91.0°F (2021) | 57.0°F (2025) | — |
| August 26 | 93.9°F (2024) | 57.9°F (2015) | — |
| August 27 | 95.0°F (2024) | 57.0°F (2015) | — |
| August 28 | 93.0°F (2007) | 60.1°F (2015) | — |
| August 29 | 93.9°F (2010) | 57.9°F (2009) | — |
| August 30 | 95.0°F (2013) | 57.0°F (2009) | — |
| August 31 | 93.9°F (2012) | 57.0°F (2009) | — |