August 20 in Bethalto, through the years

Typical high: 28.8°. Hottest: 35° (2023). Coldest night: 13.3° (2012).

YEARHIGHLOWRAIN
2025 28.2° 20.8° 0 mm
2024 24.6° 14.6° 0 mm
2023 35° 22.4° 0 mm
2022 28.6° 20.5° 7.2 mm
2021 31.7° 21.7° 0 mm
2020 27.1° 13.4° 0 mm
2019 30° 22.5° 10 mm
2018 28.7° 21.6° 14.6 mm
2017 32.3° 19.6° 0.5 mm
2016 27.9° 21.5° 3.6 mm
2015 26.5° 14.6° 0 mm
2014 29.9° 20.2° 0.6 mm
2013 29.9° 17.3° 0 mm
2012 27.6° 13.3° 0 mm
2011 31.2° 22.2° 11.4 mm
2010 33.2° 23.9° 0.4 mm
2009 26.4° 19.8° 19.3 mm
2008 28.5° 17.9° 0 mm
2007 26.2° 23.9° 14.5 mm
2006 27.4° 21.8° 8.1 mm
2005 32.1° 24.4° 0 mm
2004 20.8° 16.6° 6.4 mm
2003 34.4° 22.4° 0 mm
2002 29.3° 19.8° 0.1 mm
2001 28.1° 15° 0 mm
2000 23.7° 17.3° 13.2 mm
1999 26.2° 15.9° 0 mm
1998 30.1° 19° 0 mm
1997 25.8° 17.2° 0.4 mm
1996 32.5° 23° 0.5 mm
Source: ERA5 reanalysis (Copernicus C3S)

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