August 21 in Boylston, through the years

Typical high: 25.9°. Hottest: 31.6° (2020). Coldest night: 9.9° (2007).

YEARHIGHLOWRAIN
2025 20.5° 10.9° 0.5 mm
2024 20.8° 12.3° 3 mm
2023 28.2° 18.6° 1 mm
2022 31.3° 19° 0 mm
2021 28.2° 21.1° 0.8 mm
2020 31.6° 15.3° 0 mm
2019 27.7° 19.1° 12.6 mm
2018 22.3° 14.4° 0 mm
2017 29.4° 17.7° 0 mm
2016 28.6° 17.7° 1.2 mm
2015 26.7° 21.2° 6.1 mm
2014 23.3° 13.6° 1.2 mm
2013 31.5° 16.7° 0 mm
2012 26° 17.3° 0 mm
2011 27.8° 18.1° 1.3 mm
2010 26.3° 12.2° 2.6 mm
2009 31.3° 22.8° 6.1 mm
2008 25.4° 12° 0 mm
2007 20° 9.9° 0 mm
2006 22.9° 16.7° 0 mm
2005 30.8° 20.6° 3.6 mm
2004 22.9° 15.2° 30.9 mm
2003 29.9° 19.9° 0 mm
2002 26.5° 14.4° 0 mm
2001 26.3° 19.8° 0.2 mm
2000 23.1° 10.6° 0 mm
1999 16.3° 13.3° 11.1 mm
1998 24.6° 14.8° 0 mm
1997 16.7° 13.2° 45.4 mm
1996 28.7° 18.2° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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