August 21 in Zakim, through the years

Typical high: 22.6°. Hottest: 29.3° (2019). Coldest night: 6.6° (2009).

YEARHIGHLOWRAIN
2025 23.5° 11.9° 0.4 mm
2024 27.3° 10.6° 1.1 mm
2023 25.7° 10.3° 1 mm
2022 25.5° 10.5° 0.5 mm
2021 22° 11.5° 7.6 mm
2020 21.2° 9.9° 6.2 mm
2019 29.3° 11.2° 0 mm
2018 22.3° 8.7° 1.1 mm
2017 28.7° 0 mm
2016 27.1° 9.2° 0.5 mm
2015 28.4° 10.5° 1.3 mm
2014 24.6° 7.8° 0 mm
2013 18.2° 4 mm
2012 18° 6.8° 2.1 mm
2011 18.6° 8.4° 3 mm
2010 20.1° 11° 0 mm
2009 16° 6.6° 0 mm
2008 21.3° 9.6° 7.5 mm
2007 19.7° 8.6° 0.1 mm
2006 22° 10.6° 7.5 mm
2005 19.8° 11.5° 9.1 mm
2004 21.3° 9.8° 6.3 mm
2003 20.8° 9.7° 7.8 mm
2002 22.5° 8.1° 0 mm
2001 22.6° 8.2° 0 mm
2000 22° 10° 3 mm
1999 24.4° 8.7° 0 mm
1998 22.5° 9.4° 8.8 mm
1997 19.2° 8.8° 6.2 mm
1996 24.3° 9.1° 0.1 mm
Source: ERA5 reanalysis (Copernicus C3S)

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