August 31 in Chicago, through the years

Typical high: 25.8°. Hottest: 29.6° (2003). Coldest night: 14.7° (2018).

YEARHIGHLOWRAIN
2025 29° 17.1° 2.7 mm
2024 24.9° 17° 11.3 mm
2023 25.7° 16.1° 11.2 mm
2022 26.3° 16.9° 15.6 mm
2021 25.6° 16° 1.9 mm
2020 24° 17.4° 7.5 mm
2019 27.8° 16.2° 11.8 mm
2018 27.5° 14.7° 24.7 mm
2017 20.1° 16.2° 8.5 mm
2016 28.1° 15.7° 10.4 mm
2015 23.6° 17.1° 4.3 mm
2014 26.1° 16.6° 18.8 mm
2013 25.8° 16.5° 5.9 mm
2012 26.3° 16.4° 12.7 mm
2011 27.6° 17.4° 1.2 mm
2010 29.4° 17.1° 7.3 mm
2009 24.9° 15.5° 17.4 mm
2008 25.6° 16.3° 21.7 mm
2007 29° 16.7° 0 mm
2006 26.5° 17.2° 7.3 mm
2005 21.9° 16° 11.8 mm
2004 25.4° 15.9° 5.4 mm
2003 29.6° 18.6° 3.1 mm
2002 25.2° 17.6° 0 mm
2001 23.7° 16.5° 11.3 mm
2000 26.4° 16.2° 2.5 mm
1999 25.6° 15.8° 12 mm
1998 24.9° 17.6° 8.2 mm
1997 24° 15° 16.2 mm
1996 23.7° 16° 4.6 mm
Source: ERA5 reanalysis (Copernicus C3S)

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