September 9 in San Juan, through the years

Typical high: 21.2°. Hottest: 23.5° (2010). Coldest night: 15.2° (1996).

YEARHIGHLOWRAIN
2025 20° 17° 29.4 mm
2024 20.9° 17.6° 34.2 mm
2023 21.2° 17.1° 36 mm
2022 20.6° 16.6° 54.4 mm
2021 21.6° 16.7° 29.2 mm
2020 21.6° 17° 17.3 mm
2019 20.4° 15.9° 38.7 mm
2018 20.9° 16.7° 142.4 mm
2017 21.8° 16.7° 111.1 mm
2016 21.3° 16.8° 99 mm
2015 21.1° 17.6° 60.1 mm
2014 21° 16.3° 98.4 mm
2013 21.2° 15.6° 176.9 mm
2012 19.8° 16.1° 61.1 mm
2011 22.1° 16.5° 45.4 mm
2010 23.5° 15.9° 26.7 mm
2009 22.4° 16.3° 49.4 mm
2008 22° 17.1° 80.4 mm
2007 20.3° 16.3° 46.7 mm
2006 21.6° 16.3° 76.1 mm
2005 21.1° 17.6° 160.3 mm
2004 21.5° 15.6° 55.1 mm
2003 20.8° 16.6° 56.1 mm
2002 20.9° 16.6° 106.5 mm
2001 20.5° 15.3° 28.3 mm
2000 21.6° 16.5° 79.4 mm
1999 20.7° 16° 85.3 mm
1998 20.4° 16.3° 76.6 mm
1997 22.3° 15.6° 8.4 mm
1996 20.7° 15.2° 12.3 mm
Source: ERA5 reanalysis (Copernicus C3S)

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