September 4 in Helena, through the years

Typical high: 22.7°. Hottest: 28.9° (2018). Coldest night: 10.5° (2025).

YEARHIGHLOWRAIN
2025 17° 10.5° 3 mm
2024 23.5° 11.3° 0 mm
2023 28.6° 21° 0 mm
2022 20.3° 15.9° 4.8 mm
2021 22.8° 16.9° 0.4 mm
2020 20.5° 13.7° 0 mm
2019 21.1° 11.8° 0.5 mm
2018 28.9° 20.6° 6.9 mm
2017 25° 15° 13.1 mm
2016 23.2° 13° 0 mm
2015 23.5° 19.5° 18 mm
2014 25.2° 18.1° 0.2 mm
2013 23.2° 15.1° 0 mm
2012 25.5° 19.7° 0.2 mm
2011 23.6° 17.6° 5.9 mm
2010 15.3° 11.7° 0.8 mm
2009 23.4° 12.9° 0 mm
2008 21° 16.9° 7 mm
2007 24.5° 17.2° 0 mm
2006 21.5° 13.5° 0.4 mm
2005 21.8° 13.7° 0 mm
2004 26.5° 17.4° 0 mm
2003 18.6° 14.5° 0.1 mm
2002 22.8° 16.3° 0 mm
2001 20.1° 13.7° 0.3 mm
2000 19.6° 12.7° 0.9 mm
1999 27.4° 16.7° 0 mm
1998 20.6° 14.3° 0 mm
1997 18.9° 10.8° 0 mm
1996 26.4° 16.4° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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