September 10 in Karuizawa, through the years

Typical high: 24.1°. Hottest: 29.5° (2023). Coldest night: 11.1° (2008).

YEARHIGHLOWRAIN
2025 24.4° 17.8° 5.3 mm
2024 28.5° 17.3° 0.1 mm
2023 29.5° 22.1° 0.4 mm
2022 25.1° 14.6° 0 mm
2021 24.7° 17.5° 0.1 mm
2020 24.3° 19.3° 13.2 mm
2019 28.5° 20.8° 0 mm
2018 15.4° 13.5° 66.9 mm
2017 22.3° 14.4° 7.1 mm
2016 22.7° 17.2° 1.7 mm
2015 23.9° 17.1° 0.6 mm
2014 23.5° 15.3° 10.3 mm
2013 24° 15.5° 0.3 mm
2012 25.9° 20.2° 2.1 mm
2011 23.3° 17.7° 2 mm
2010 25.4° 14.8° 0 mm
2009 18.2° 12.9° 9.8 mm
2008 25.9° 11.1° 0 mm
2007 22.5° 17.9° 15.2 mm
2006 25.8° 18.4° 10.4 mm
2005 24.5° 14.9° 13.4 mm
2004 21.3° 13.8° 0.7 mm
2003 22.9° 16.5° 8 mm
2002 24.7° 15.8° 0 mm
2001 26.2° 21.6° 4.8 mm
2000 21.7° 16° 21.2 mm
1999 27.3° 18.2° 0.1 mm
1998 25.6° 15.2° 0 mm
1997 23.3° 15.8° 1.5 mm
1996 22.4° 14.4° 2.2 mm
Source: ERA5 reanalysis (Copernicus C3S)

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