August 31 in Hyannis Port, through the years

Typical high: 21.6°. Hottest: 25° (2022). Coldest night: 15.8° (2002).

YEARHIGHLOWRAIN
2025 19.6° 17.4° 0 mm
2024 21.2° 18.7° 0 mm
2023 21.5° 17.7° 0 mm
2022 25° 22.8° 1.1 mm
2021 24.9° 22.5° 0 mm
2020 20.1° 18.7° 0 mm
2019 21.9° 20.4° 0 mm
2018 21.9° 19.5° 0 mm
2017 22.1° 17.5° 0.7 mm
2016 23.1° 21° 0 mm
2015 24.9° 22° 0 mm
2014 22.3° 20.1° 0.3 mm
2013 21.9° 20.6° 0 mm
2012 24.3° 21° 0 mm
2011 21.1° 18.7° 0 mm
2010 24.7° 21.6° 0 mm
2009 20.4° 17.9° 0 mm
2008 22° 20.2° 0 mm
2007 19.7° 18.8° 1.3 mm
2006 18.9° 17° 0 mm
2005 23.1° 21° 1.3 mm
2004 20.8° 19.8° 21.1 mm
2003 18.5° 16.3° 1.7 mm
2002 17.7° 15.8° 0 mm
2001 21.5° 20.4° 0 mm
2000 21.9° 20.1° 0 mm
1999 19° 17.7° 0 mm
1998 21.2° 19° 0.5 mm
1997 21.1° 18.8° 0 mm
1996 20.4° 18.3° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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