August 21 in Des Moines, through the years

Typical high: 28.1°. Hottest: 33.7° (2001). Coldest night: 9.7° (2004).

YEARHIGHLOWRAIN
2025 26.7° 18.5° 0.1 mm
2024 25° 16.9° 0.7 mm
2023 33.3° 23.3° 0 mm
2022 26.7° 17.3° 0.2 mm
2021 26.9° 18.3° 9.9 mm
2020 31.6° 16.1° 0 mm
2019 25.2° 18.8° 1.4 mm
2018 23.8° 16.7° 0.5 mm
2017 28.5° 20.4° 15.7 mm
2016 24.6° 13.4° 0 mm
2015 27.2° 16.4° 0 mm
2014 30.8° 24.4° 0 mm
2013 32.3° 21.3° 0 mm
2012 29.2° 12.3° 0 mm
2011 27.4° 18.3° 1 mm
2010 31.1° 20.9° 0.5 mm
2009 20.8° 15.9° 0.6 mm
2008 23.2° 19° 1.2 mm
2007 32.3° 21.5° 29.2 mm
2006 27.9° 16.3° 0 mm
2005 28.4° 18.5° 0 mm
2004 23.6° 9.7° 0 mm
2003 32.4° 20.5° 0 mm
2002 29.5° 22.9° 31.9 mm
2001 33.7° 18.8° 0 mm
2000 29.8° 18.8° 0 mm
1999 27.5° 17.7° 0 mm
1998 28.5° 21.1° 1.1 mm
1997 24° 12.2° 0 mm
1996 30.5° 20.6° 1.7 mm
Source: ERA5 reanalysis (Copernicus C3S)

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