September 4 in Santa Rosa, through the years

Typical high: 33.1°. Hottest: 36° (2025). Coldest night: 21° (1996).

YEARHIGHLOWRAIN
2025 36° 23° 0.2 mm
2024 33.4° 25.1° 9 mm
2023 34.2° 23.5° 5.4 mm
2022 32.1° 24.5° 6.7 mm
2021 28.5° 23.6° 14.7 mm
2020 30.7° 25° 14.6 mm
2019 35.5° 23.4° 0 mm
2018 30.7° 23.7° 9.4 mm
2017 32.7° 23.8° 1.9 mm
2016 33.5° 26.7° 0.6 mm
2015 34.4° 25.4° 0.2 mm
2014 31.6° 24.9° 1.8 mm
2013 29.4° 22.9° 10 mm
2012 31.9° 23.2° 1.5 mm
2011 34.4° 25.3° 0 mm
2010 33.5° 26° 1.8 mm
2009 34.6° 22.5° 2.8 mm
2008 34.2° 24.1° 3.6 mm
2007 33.3° 23.9° 1.8 mm
2006 33.8° 23.6° 3.5 mm
2005 33.7° 23.9° 8.7 mm
2004 34.9° 23.2° 11.4 mm
2003 34.1° 24° 0.1 mm
2002 34.1° 24.1° 4.8 mm
2001 31.9° 23.9° 4.2 mm
2000 31.9° 22.3° 1.7 mm
1999 33.5° 24.7° 1.3 mm
1998 34.2° 26.2° 5.7 mm
1997 33.9° 23.5° 2.8 mm
1996 33.5° 21° 0 mm
Source: ERA5 reanalysis (Copernicus C3S)

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