September 5 in Santa Rosa, through the years

Typical high: 15.5°. Hottest: 18.1° (2017). Coldest night: 4.8° (2017).

YEARHIGHLOWRAIN
2025 13.1° 7.4° 8.3 mm
2024 12° 9.2° 9 mm
2023 15.9° 9.4° 6.8 mm
2022 12.7° 7.4° 4.2 mm
2021 17.9° 7.1° 3.6 mm
2020 17.9° 8.4° 8.5 mm
2019 15.9° 8.3° 9.8 mm
2018 16.2° 7.5° 7 mm
2017 18.1° 4.8° 0 mm
2016 16.8° 7.5° 7.3 mm
2015 15.1° 6.3° 1.5 mm
2014 14.4° 6.8° 0.8 mm
2013 15° 3.4 mm
2012 14.5° 5.5 mm
2011 14.6° 6.2° 0.4 mm
2010 17.7° 6.4° 3.1 mm
2009 15.3° 0.7 mm
2008 16.1° 8.6° 1.4 mm
2007 17.4° 6.8° 0.6 mm
2006 14.5° 6.3° 2.7 mm
2005 16.1° 5.7° 4.3 mm
2004 15.4° 7.3° 7.3 mm
2003 13.8° 6.4° 1.3 mm
2002 14.2° 5.1° 2.8 mm
2001 14.8° 7.1° 16 mm
2000 15.9° 16.9 mm
1999 14.5° 7.4° 3.8 mm
1998 15° 6.7° 2.5 mm
1997 17.9° 5.6° 2.8 mm
1996 17.3° 7.6° 4.1 mm
Source: ERA5 reanalysis (Copernicus C3S)

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