September 1 in Ottawa, through the years

Typical high: 25.8°. Hottest: 33.4° (2010). Coldest night: 9.7° (2009).

YEARHIGHLOWRAIN
2025 23.8° 12° 0 mm
2024 26.7° 17.2° 0.1 mm
2023 24.4° 13.7° 0 mm
2022 28.3° 17.8° 0 mm
2021 25.9° 17.9° 0 mm
2020 28.6° 18.9° 1 mm
2019 20.5° 17.6° 7.9 mm
2018 28.9° 20.2° 3.6 mm
2017 16.5° 12.5° 0 mm
2016 22.3° 16.3° 0.1 mm
2015 30.4° 19.5° 0 mm
2014 30.1° 21.7° 0.8 mm
2013 27.1° 21.8° 5.8 mm
2012 26.8° 21.9° 0.7 mm
2011 32.7° 21.7° 2.2 mm
2010 33.4° 21.8° 0.9 mm
2009 21.3° 9.7° 0 mm
2008 29.2° 15.5° 0 mm
2007 24.1° 15.3° 0 mm
2006 19.7° 16.8° 3.7 mm
2005 27.4° 15.5° 0 mm
2004 25.1° 15.7° 0 mm
2003 19° 16.2° 33.5 mm
2002 27.6° 18° 0 mm
2001 20.7° 14.2° 0 mm
2000 29.2° 20.8° 0 mm
1999 27.5° 13.6° 0 mm
1998 24.5° 15.2° 0 mm
1997 25.7° 17.5° 0.1 mm
1996 25.9° 15.2° 0.8 mm
Source: ERA5 reanalysis (Copernicus C3S)

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