August 31 in Alton, through the years

Typical high: 23.7°. Hottest: 30.3° (2019). Coldest night: 5.5° (2010).

YEARHIGHLOWRAIN
2025 24.5° 9.6° 0 mm
2024 24.9° 8.7° 0.6 mm
2023 26.4° 13.5° 0.2 mm
2022 27.3° 13° 0 mm
2021 23.3° 12.3° 0.6 mm
2020 25.1° 11° 0.1 mm
2019 30.3° 12.8° 0 mm
2018 24.2° 10.5° 0 mm
2017 24.1° 13.5° 0.8 mm
2016 24.6° 13.6° 0 mm
2015 22.6° 9.8° 0.2 mm
2014 26° 12.2° 0 mm
2013 20.7° 12.2° 13.3 mm
2012 21.9° 11.7° 0.8 mm
2011 26.5° 13.7° 0 mm
2010 22.1° 5.5° 0 mm
2009 26.3° 15° 0 mm
2008 17.2° 11.2° 7.7 mm
2007 25.4° 12.9° 1.4 mm
2006 24.3° 12.4° 1.7 mm
2005 24.6° 6.3° 0 mm
2004 26.4° 9.4° 0 mm
2003 26.3° 8.2° 0 mm
2002 24.7° 8.7° 0.6 mm
2001 21.2° 6.8° 0.5 mm
2000 17.1° 5.5° 1.2 mm
1999 18.7° 10.4° 0.1 mm
1998 16.6° 10.2° 6.4 mm
1997 20° 10° 0.7 mm
1996 27.6° 12° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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