September 9 in San José, through the years

Typical high: 29.9°. Hottest: 31.8° (2023). Coldest night: 22.9° (1999).

YEARHIGHLOWRAIN
2025 30.4° 24° 10.4 mm
2024 29.6° 24.1° 2.4 mm
2023 31.8° 25.5° 2.1 mm
2022 29.6° 23.7° 20.4 mm
2021 29.8° 23.8° 21.9 mm
2020 30.8° 23.6° 7.7 mm
2019 29.2° 23.7° 8.5 mm
2018 29.9° 23° 8.2 mm
2017 31.2° 23.8° 5.1 mm
2016 29° 24.8° 7.3 mm
2015 30.5° 25° 2 mm
2014 30.5° 23.8° 4.7 mm
2013 29.4° 23.9° 10.6 mm
2012 28.3° 23.2° 10.6 mm
2011 30.6° 23.5° 4.5 mm
2010 30.3° 23.9° 5 mm
2009 31.5° 25.1° 0 mm
2008 30.8° 23.9° 0 mm
2007 29.7° 23.2° 5 mm
2006 30.1° 23° 7.5 mm
2005 30.6° 24.8° 1.4 mm
2004 29.6° 23.1° 3.1 mm
2003 29.2° 23.7° 1.9 mm
2002 29.9° 23.7° 1.7 mm
2001 28.1° 23.1° 3.6 mm
2000 28.6° 23.7° 3.3 mm
1999 29° 22.9° 1.7 mm
1998 28.1° 23.7° 7 mm
1997 30.8° 23.5° 1 mm
1996 29.8° 23.1° 4.7 mm
Source: ERA5 reanalysis (Copernicus C3S)

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