South San Francisco September Weather Averages California, United States of America

September Weather Averages for South San Francisco

High Temp	20°C	68°F
Low Temp	14°C	58°F
Avg Temp	17°C	63°F
Sunshine Hours	305 hours
Rainfall	3.40 mm	0.13 In
Rain days	0 days
Pressure	1013 mb	30 In

South San Francisco September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	22°C / 71°F	14°C / 57°F	17°C / 63°F	356 hours	0.30 mm / 0.01 In	0 days	1013 mb / 30 In
2009	23°C / 73°F	15°C / 58°F	18°C / 65°F	346 hours	7.10 mm / 0.28 In	1 days	1014 mb / 30 In
2010	21°C / 69°F	14°C / 57°F	17°C / 63°F	325 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2011	20°C / 68°F	14°C / 58°F	17°C / 63°F	343 hours	2.30 mm / 0.09 In	1 days	1014 mb / 30 In
2012	18°C / 65°F	13°C / 55°F	15°C / 59°F	339 hours	0.00 mm / 0.00 In	0 days	1015 mb / 30 In
2013	20°C / 68°F	15°C / 59°F	17°C / 63°F	315 hours	8.40 mm / 0.33 In	1 days	1013 mb / 30 In
2014	21°C / 69°F	16°C / 60°F	18°C / 64°F	330 hours	4.30 mm / 0.17 In	0 days	1012 mb / 30 In
2015	21°C / 70°F	15°C / 59°F	18°C / 64°F	291 hours	2.00 mm / 0.08 In	1 days	1012 mb / 30 In
2016	20°C / 68°F	14°C / 57°F	17°C / 62°F	325 hours	0.00 mm / 0.00 In	0 days	1015 mb / 30 In
2017	22°C / 72°F	17°C / 62°F	19°C / 67°F	298 hours	0.10 mm / 0.00 In	0 days	1013 mb / 30 In
2018	20°C / 68°F	14°C / 57°F	17°C / 62°F	316 hours	0.90 mm / 0.04 In	0 days	1013 mb / 30 In
2019	21°C / 69°F	16°C / 60°F	18°C / 65°F	324 hours	0.80 mm / 0.03 In	0 days	1014 mb / 30 In
2020	21°C / 70°F	16°C / 60°F	18°C / 64°F	335 hours	0.00 mm / 0.00 In	0 days	1014 mb / 30 In
2021	19°C / 67°F	12°C / 54°F	15°C / 60°F	321 hours	1.30 mm / 0.05 In	0 days	1014 mb / 30 In
2022	21°C / 69°F	14°C / 57°F	17°C / 62°F	297 hours	22.60 mm / 0.89 In	1 days	1012 mb / 30 In
2023	19°C / 66°F	13°C / 56°F	16°C / 60°F	206 hours	2.85 mm / 0.11 In	0 days	1015 mb / 30 In
2024	18°C / 65°F	13°C / 55°F	15°C / 59°F	169 hours	1.67 mm / 0.07 In	0 days	1012 mb / 30 In

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