September 3 in Alton, through the years

Typical high: 23.4°. Hottest: 32.2° (2023). Coldest night: 6.6° (1997).

YEARHIGHLOWRAIN
2025 16.7° 6.9° 8.1 mm
2024 23.8° 9.5° 0 mm
2023 32.2° 19.2° 0 mm
2022 21.7° 9.9° 2 mm
2021 22.9° 12.6° 1.4 mm
2020 20.1° 12.8° 2.3 mm
2019 21.8° 39.8 mm
2018 23.9° 16.2° 0 mm
2017 24.9° 10.8° 0.1 mm
2016 24° 9.1° 0 mm
2015 22.4° 15.5° 19.6 mm
2014 25.7° 10.7° 0 mm
2013 24.1° 7.3° 0 mm
2012 28.6° 15.7° 13.8 mm
2011 21.4° 16.2° 23.2 mm
2010 18.4° 9.4° 2.6 mm
2009 25.2° 7.9° 0 mm
2008 21.1° 12.2° 0.1 mm
2007 25.1° 12.8° 0.1 mm
2006 24.2° 10.8° 0 mm
2005 20.5° 11.2° 0 mm
2004 27.3° 15.9° 0 mm
2003 21.9° 14.2° 0.5 mm
2002 24.9° 14.2° 0.2 mm
2001 28.2° 15.3° 0 mm
2000 20° 12.1° 12 mm
1999 29.3° 18.2° 0 mm
1998 19.8° 8.8° 0 mm
1997 16.6° 6.6° 0 mm
1996 26.6° 16.9° 2.3 mm
Source: ERA5 reanalysis (Copernicus C3S)

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