August 31 in O'hare, through the years

Typical high: 16.7°. Hottest: 19.7° (2005). Coldest night: 3.4° (2012).

YEARHIGHLOWRAIN
2025 17.8° 12.1° 6.7 mm
2024 19.5° 4.8° 0 mm
2023 18° 7.3° 0.4 mm
2022 16.8° 8.9° 0 mm
2021 17.3° 7.9° 0 mm
2020 15.3° 9.6° 0 mm
2019 15.4° 10.6° 18.4 mm
2018 17.9° 4.3° 0 mm
2017 16.2° 6.8° 0.7 mm
2016 15.8° 12.7° 4.6 mm
2015 16.4° 8.3° 0.7 mm
2014 17.4° 11.5° 1.2 mm
2013 14.6° 9.9° 0 mm
2012 14.2° 3.4° 2 mm
2011 14.2° 9.6° 0.5 mm
2010 17.1° 5.4° 0 mm
2009 17.1° 14° 20.6 mm
2008 16.4° 10.5° 4.9 mm
2007 16.7° 12.6° 0 mm
2006 18.6° 11.5° 5.4 mm
2005 19.7° 14° 9.6 mm
2004 17.4° 7.1° 0 mm
2003 15.9° 0 mm
2002 14.8° 8.9° 0 mm
2001 17.5° 11° 0 mm
2000 16.8° 12.7° 15.2 mm
1999 16.9° 14.1° 0 mm
1998 19.5° 11.2° 0 mm
1997 14.4° 8.3° 7.9 mm
1996 15.6° 8.4° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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