September 4 in Santa Rosa, through the years

Typical high: 23.3°. Hottest: 34.2° (2004). Coldest night: 4.1° (1996).

YEARHIGHLOWRAIN
2025 22.4° 11.2° 27.8 mm
2024 19° 11.8° 13.1 mm
2023 22° 15.3° 44.5 mm
2022 18.7° 5.6° 0 mm
2021 24.3° 17.8° 17.1 mm
2020 24.2° 7.4° 0 mm
2019 21.3° 9.2° 0 mm
2018 20.4° 11° 0 mm
2017 34° 19° 0 mm
2016 14.5° 11.8° 1.5 mm
2015 22.1° 13° 0 mm
2014 21.8° 18° 9 mm
2013 21.9° 10.5° 0 mm
2012 29.8° 19.2° 0 mm
2011 32.9° 20.4° 0 mm
2010 17.2° 9.9° 8.4 mm
2009 22° 16.6° 1.1 mm
2008 19.4° 12.3° 1.2 mm
2007 33.8° 22.1° 0 mm
2006 14.4° 4.6° 0 mm
2005 20.6° 12.5° 1.7 mm
2004 34.2° 21.2° 0 mm
2003 31.6° 19.2° 0 mm
2002 24.9° 7.2° 0 mm
2001 22.8° 17.4° 2.8 mm
2000 25.3° 10.9° 0.4 mm
1999 21.1° 16.8° 15.2 mm
1998 19.1° 15° 2.1 mm
1997 23.1° 18.8° 84.1 mm
1996 19° 4.1° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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