August 21 in Heiskala, through the years

Typical high: 18.4°. Hottest: 24.1° (1996). Coldest night: 3.6° (1999).

YEARHIGHLOWRAIN
2025 13.6° 4.8° 3.5 mm
2024 21.1° 10.3° 0 mm
2023 20.9° 6.4° 0 mm
2022 22.4° 15.4° 0 mm
2021 15.7° 11.6° 5.7 mm
2020 23.8° 11.5° 0.2 mm
2019 19.3° 10.3° 0.9 mm
2018 15.3° 7.7° 0 mm
2017 17.9° 10.9° 0.5 mm
2016 17.4° 12.2° 0.8 mm
2015 21.2° 9.2° 0 mm
2014 15° 10.7° 8.9 mm
2013 19.9° 10° 0 mm
2012 15.8° 4.4° 0 mm
2011 18° 9.7° 0 mm
2010 18° 5.1° 0.9 mm
2009 20° 0 mm
2008 19° 12.7° 3.9 mm
2007 19.7° 11° 0 mm
2006 19.9° 6.8° 0 mm
2005 16.5° 9.5° 1.2 mm
2004 17.7° 12.4° 2.3 mm
2003 16.7° 11.6° 5.7 mm
2002 20.7° 5.8° 0 mm
2001 16.4° 4.5° 0 mm
2000 15.9° 5.6° 0.2 mm
1999 14° 3.6° 0.1 mm
1998 14.4° 4.6 mm
1997 22.1° 6.2° 0 mm
1996 24.1° 13° 0.2 mm
Source: ERA5 reanalysis (Copernicus C3S)

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