August 21 in Onnela, through the years

Typical high: 13.1°. Hottest: 20.1° (2002). Coldest night: 1.3° (2001).

YEARHIGHLOWRAIN
2025 8.6° 4 mm
2024 18° 11.9° 0.1 mm
2023 12.1° 3.3° 0 mm
2022 18.8° 16.5° 8.3 mm
2021 8.9° 5.2° 0.1 mm
2020 13° 5.7° 0.3 mm
2019 15.1° 6.4° 0 mm
2018 10.8° 4.7° 1.8 mm
2017 10.3° 6.2° 3.5 mm
2016 14.4° 9.8° 7.4 mm
2015 18.9° 8.4° 0 mm
2014 7.7° 6.1 mm
2013 16.2° 9.3° 0.4 mm
2012 10.3° 3.3° 0 mm
2011 15.9° 4.9° 0 mm
2010 4.6° 0.1 mm
2009 16.4° 8.7° 0 mm
2008 12.8° 8.8° 0.4 mm
2007 12° 3.8° 0 mm
2006 15.5° 5.2° 0 mm
2005 11.5° 8.1° 0 mm
2004 13.7° 7.4° 6.8 mm
2003 12.7° 6.9° 0 mm
2002 20.1° 6.8° 0 mm
2001 12° 1.3° 0 mm
2000 12° 1.7° 0 mm
1999 8.4° 6.5 mm
1998 14.8° 0.2 mm
1997 13.4° 9.3° 5.9 mm
1996 8.5° 5.2° 4.1 mm
Source: ERA5 reanalysis (Copernicus C3S)

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