Los Altos September Weather Averages California, United States of America

September Weather Averages for Los Altos

High Temp	27°C	81°F
Low Temp	15°C	60°F
Avg Temp	21°C	69°F
Sunshine Hours	332 hours
Rainfall	2.44 mm	0.10 In
Rain days	0 days
Pressure	1013 mb	30 In

Los Altos September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	29°C / 84°F	14°C / 57°F	20°C / 68°F	355 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2009	29°C / 85°F	15°C / 58°F	21°C / 70°F	345 hours	3.80 mm / 0.15 In	0 days	1014 mb / 30 In
2010	28°C / 82°F	14°C / 57°F	20°C / 67°F	332 hours	0.10 mm / 0.00 In	0 days	1013 mb / 30 In
2011	27°C / 80°F	15°C / 59°F	20°C / 68°F	348 hours	0.30 mm / 0.01 In	0 days	1014 mb / 30 In
2012	25°C / 77°F	13°C / 55°F	18°C / 65°F	354 hours	0.00 mm / 0.00 In	0 days	1015 mb / 30 In
2013	24°C / 75°F	14°C / 57°F	19°C / 65°F	341 hours	8.40 mm / 0.33 In	1 days	1013 mb / 30 In
2014	26°C / 78°F	15°C / 59°F	20°C / 67°F	334 hours	2.80 mm / 0.11 In	1 days	1012 mb / 30 In
2015	28°C / 82°F	16°C / 62°F	21°C / 70°F	309 hours	2.40 mm / 0.09 In	1 days	1012 mb / 30 In
2016	26°C / 79°F	15°C / 60°F	20°C / 68°F	356 hours	0.00 mm / 0.00 In	0 days	1015 mb / 30 In
2017	28°C / 83°F	19°C / 66°F	23°C / 74°F	315 hours	2.36 mm / 0.09 In	1 days	1013 mb / 30 In
2018	26°C / 79°F	16°C / 61°F	21°C / 69°F	351 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2019	26°C / 79°F	18°C / 64°F	22°C / 71°F	322 hours	0.70 mm / 0.03 In	0 days	1014 mb / 30 In
2020	30°C / 87°F	19°C / 66°F	24°C / 75°F	353 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2021	30°C / 85°F	15°C / 58°F	21°C / 70°F	350 hours	0.10 mm / 0.00 In	0 days	1013 mb / 30 In
2022	30°C / 85°F	16°C / 61°F	22°C / 71°F	307 hours	14.90 mm / 0.59 In	1 days	1012 mb / 30 In
2023	26°C / 79°F	13°C / 55°F	18°C / 65°F	280 hours	1.78 mm / 0.07 In	0 days	1014 mb / 30 In
2024	28°C / 82°F	14°C / 57°F	20°C / 68°F	307 hours	1.47 mm / 0.06 In	0 days	1012 mb / 30 In

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