August 17 in O'Fallons, through the years

Typical high: 28.6°. Hottest: 34.2° (2021). Coldest night: 9.2° (2002).

YEARHIGHLOWRAIN
2025 32.5° 20.3° 0.1 mm
2024 32.1° 15.5° 0 mm
2023 29.5° 15.7° 0 mm
2022 26.2° 16.1° 0.4 mm
2021 34.2° 17.7° 0 mm
2020 32.3° 14.9° 0 mm
2019 31.1° 18.5° 0.8 mm
2018 29° 14.5° 0 mm
2017 29.2° 11.4° 0 mm
2016 31° 15.7° 1.4 mm
2015 18.1° 14.1° 2.7 mm
2014 32.7° 16.3° 0.3 mm
2013 26.1° 16.7° 0 mm
2012 26.9° 9.5° 0 mm
2011 27.5° 15.3° 0.7 mm
2010 23.7° 14.3° 2.5 mm
2009 23.7° 12.2° 3.3 mm
2008 23.4° 13.4° 0 mm
2007 29.2° 17.6° 0.1 mm
2006 30.7° 17.6° 0 mm
2005 30.1° 17.8° 9 mm
2004 30.9° 12.6° 0 mm
2003 33.4° 18.9° 0 mm
2002 25.4° 9.2° 0.3 mm
2001 29.1° 15.1° 3.6 mm
2000 26.9° 16.6° 0.5 mm
1999 30.3° 15.3° 9.7 mm
1998 33° 14.9° 0 mm
1997 23° 13.1° 0.2 mm
1996 25.5° 15.4° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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