Sunnyvale September Weather Averages California, United States of America

September Weather Averages for Sunnyvale

High Temp	27°C	81°F
Low Temp	15°C	60°F
Avg Temp	21°C	69°F
Sunshine Hours	330 hours
Rainfall	3.82 mm	0.15 In
Rain days	1 days
Pressure	1013 mb	30 In

Sunnyvale September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	28°C / 83°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 / 84°F	14°C / 58°F	21°C / 69°F	348 hours	5.60 mm / 0.22 In	0 days	1014 mb / 30 In
2010	27°C / 81°F	14°C / 57°F	20°C / 67°F	331 hours	1.00 mm / 0.04 In	0 days	1013 mb / 30 In
2011	26°C / 80°F	15°C / 59°F	20°C / 68°F	349 hours	0.70 mm / 0.03 In	1 days	1014 mb / 30 In
2012	25°C / 77°F	13°C / 56°F	18°C / 65°F	348 hours	0.00 mm / 0.00 In	0 days	1015 mb / 30 In
2013	24°C / 76°F	14°C / 58°F	19°C / 66°F	340 hours	8.90 mm / 0.35 In	1 days	1013 mb / 30 In
2014	25°C / 78°F	15°C / 59°F	20°C / 67°F	325 hours	6.50 mm / 0.26 In	1 days	1012 mb / 30 In
2015	28°C / 83°F	16°C / 61°F	21°C / 70°F	303 hours	3.10 mm / 0.12 In	1 days	1012 mb / 30 In
2016	27°C / 81°F	15°C / 60°F	20°C / 68°F	351 hours	0.10 mm / 0.00 In	0 days	1015 mb / 30 In
2017	29°C / 83°F	19°C / 66°F	23°C / 74°F	317 hours	4.88 mm / 0.19 In	2 days	1013 mb / 30 In
2018	27°C / 80°F	16°C / 61°F	21°C / 69°F	349 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2019	27°C / 80°F	17°C / 63°F	22°C / 71°F	323 hours	2.40 mm / 0.09 In	1 days	1014 mb / 30 In
2020	31°C / 87°F	19°C / 66°F	24°C / 75°F	354 hours	0.00 mm / 0.00 In	0 days	1014 mb / 30 In
2021	30°C / 85°F	15°C / 59°F	21°C / 70°F	351 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	310 hours	24.50 mm / 0.96 In	1 days	1012 mb / 30 In
2023	27°C / 80°F	13°C / 56°F	18°C / 65°F	279 hours	1.91 mm / 0.08 In	0 days	1014 mb / 30 In
2024	28°C / 82°F	14°C / 58°F	20°C / 68°F	309 hours	1.40 mm / 0.06 In	0 days	1012 mb / 30 In

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