September 3 in Herndon, through the years

Typical high: 29.9°. Hottest: 38.3° (2015). Coldest night: 6.2° (2010).

YEARHIGHLOWRAIN
2025 27° 15.6° 0 mm
2024 31.3° 13° 0 mm
2023 37.1° 19.9° 0 mm
2022 29.7° 16.3° 0 mm
2021 25.2° 18° 0 mm
2020 27° 15.7° 0 mm
2019 29.7° 20.5° 0 mm
2018 24.9° 18.6° 7.5 mm
2017 36° 17.6° 0 mm
2016 26.6° 18.4° 13 mm
2015 38.3° 20.8° 0.1 mm
2014 35.4° 19.3° 0 mm
2013 34.2° 17.6° 0 mm
2012 32.9° 18.5° 0.2 mm
2011 21.1° 14.7° 1 mm
2010 25.2° 6.2° 0 mm
2009 28.1° 15.2° 0.1 mm
2008 21.7° 8.2° 0 mm
2007 33.7° 17.1° 0 mm
2006 24° 8.8° 0 mm
2005 34.1° 17.6° 0 mm
2004 32.1° 17° 0 mm
2003 28.6° 15.7° 0.3 mm
2002 30.9° 12.1° 0 mm
2001 31° 15° 0 mm
2000 32.9° 17.5° 0.1 mm
1999 28.1° 20° 3.1 mm
1998 35.6° 16.1° 0 mm
1997 24° 16.4° 0 mm
1996 30.4° 15.9° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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