September 9 in San José, through the years

Typical high: 16.6°. Hottest: 19.4° (2010). Coldest night: 3.8° (2019).

YEARHIGHLOWRAIN
2025 15.3° 6.4° 1.1 mm
2024 13.7° 5.8° 6.9 mm
2023 16.1° 2.9 mm
2022 16.7° 4.7° 0 mm
2021 17.5° 5.1° 1 mm
2020 16.7° 0.7 mm
2019 15.9° 3.8° 0.1 mm
2018 16° 1.3 mm
2017 16.7° 7.9° 2 mm
2016 18.7° 6.4° 1 mm
2015 16.3° 6.3° 1.3 mm
2014 16.2° 5.5° 1.1 mm
2013 16.1° 6.8° 4.1 mm
2012 16° 6.4° 1.6 mm
2011 17.8° 7.6 mm
2010 19.4° 4.2° 0.8 mm
2009 17.9° 2.4 mm
2008 15.3° 6.9° 6 mm
2007 16.5° 6.4° 1.6 mm
2006 17.7° 5.2° 0.8 mm
2005 15.4° 7.6° 1.9 mm
2004 16.5° 7.7° 2.8 mm
2003 15.6° 7.3° 2.2 mm
2002 16.8° 6.4° 2.6 mm
2001 16.6° 6.5° 3.9 mm
2000 16° 6.5° 12.4 mm
1999 17.1° 6.7° 0.3 mm
1998 15.4° 7.1° 0 mm
1997 18.4° 5.9° 0.1 mm
1996 16.8° 5.9° 1.5 mm
Source: ERA5 reanalysis (Copernicus C3S)

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