September 10 in Alton, through the years

Typical high: 13.5°. Hottest: 16° (2023). Coldest night: 6.7° (1999).

YEARHIGHLOWRAIN
2025 14.4° 10.2° 13.8 mm
2024 14.6° 12.3° 1.3 mm
2023 16° 10.4° 0 mm
2022 13.5° 9.6° 4.5 mm
2021 15.3° 10.7° 3.9 mm
2020 13° 10° 5.9 mm
2019 11.8° 7.9° 2.1 mm
2018 12.3° 7.5° 0 mm
2017 10.6° 8.3° 9.8 mm
2016 11.4° 8.8° 0.8 mm
2015 12.9° 10.1° 7 mm
2014 14.5° 9.9° 0 mm
2013 14° 11.3° 0.1 mm
2012 13.3° 10.4° 3 mm
2011 15.6° 11.1° 0 mm
2010 14° 11.7° 3.3 mm
2009 13.7° 8.6° 0 mm
2008 13.5° 10.6° 2.1 mm
2007 12.3° 9.2° 0.1 mm
2006 11.6° 0.3 mm
2005 14.3° 11° 0 mm
2004 13.7° 8.8° 0 mm
2003 11.9° 10° 3.9 mm
2002 15.8° 11.3° 0 mm
2001 12.4° 7.7° 0 mm
2000 13.8° 10.9° 4 mm
1999 11.4° 6.7° 0 mm
1998 12.6° 9.4° 0.1 mm
1997 15.2° 10.5° 0.2 mm
1996 14.7° 10.2° 2.2 mm
Source: ERA5 reanalysis (Copernicus C3S)

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