August 19 in O'Fallon, through the years

Typical high: 29.6°. Hottest: 34.9° (2005). Coldest night: 14.9° (2008).

YEARHIGHLOWRAIN
2025 32.8° 23.5° 6.5 mm
2024 28.5° 18.4° 0 mm
2023 31.1° 17.3° 0 mm
2022 28.9° 16.5° 0 mm
2021 30.9° 20.5° 0 mm
2020 25.5° 16.2° 0 mm
2019 33.7° 22.9° 9 mm
2018 28.5° 19.8° 0.2 mm
2017 31.7° 18.8° 2.9 mm
2016 29.7° 21.7° 0.7 mm
2015 22.2° 16.7° 7.8 mm
2014 32° 20.2° 11.8 mm
2013 29.6° 15.9° 0 mm
2012 27.4° 15.8° 0 mm
2011 31.8° 21.4° 13.5 mm
2010 34.3° 21.3° 0 mm
2009 30.2° 22° 4.6 mm
2008 28.4° 14.9° 0 mm
2007 32.2° 23.2° 5 mm
2006 32.1° 23.6° 1.2 mm
2005 34.9° 24.6° 0 mm
2004 27.7° 20.8° 0.3 mm
2003 33.7° 22.9° 0 mm
2002 28.4° 22.1° 6 mm
2001 26.4° 15.8° 0 mm
2000 24° 16.1° 0 mm
1999 26.3° 19.7° 0.2 mm
1998 30.8° 22.9° 0 mm
1997 22.6° 18.2° 35.7 mm
1996 32.3° 21.6° 0.2 mm
Source: ERA5 reanalysis (Copernicus C3S)

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