August 27 in Mercersburg, through the years

Typical high: 28.4°. Hottest: 34.9° (2020). Coldest night: 11.9° (2025).

YEARHIGHLOWRAIN
2025 23.3° 11.9° 0 mm
2024 32.3° 18.9° 0 mm
2023 29.3° 20.9° 1.6 mm
2022 29.4° 20.5° 0.3 mm
2021 32.1° 21.3° 1.3 mm
2020 34.9° 22.5° 0 mm
2019 23.9° 16.7° 5.1 mm
2018 32.2° 20.2° 3.1 mm
2017 24.1° 15.2° 0 mm
2016 32.4° 21.7° 0 mm
2015 24.6° 14.4° 0 mm
2014 31.4° 15.6° 0 mm
2013 29.4° 22.3° 2.2 mm
2012 30.9° 19.6° 0.2 mm
2011 24.9° 21.4° 6.9 mm
2010 27.6° 13.9° 0 mm
2009 29.6° 20.8° 0.2 mm
2008 23.9° 14.8° 0.2 mm
2007 28.7° 17.1° 0 mm
2006 29.2° 21.8° 8.7 mm
2005 21.4° 17.5° 12.7 mm
2004 30.5° 20.1° 0 mm
2003 29.1° 21° 10 mm
2002 28.6° 18.6° 0 mm
2001 29° 21.7° 1.2 mm
2000 28.4° 18.3° 3.3 mm
1999 26.4° 18.1° 1.3 mm
1998 29.7° 20.2° 0 mm
1997 28.5° 16.4° 0 mm
1996 27.3° 17.8° 0.7 mm
Source: ERA5 reanalysis (Copernicus C3S)

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