Diamond Bar September Weather Averages California, United States of America

September Weather Averages for Diamond Bar

High Temp	30°C	86°F
Low Temp	20°C	68°F
Avg Temp	24°C	76°F
Sunshine Hours	339 hours
Rainfall	5.49 mm	0.22 In
Rain days	1 days
Pressure	1012 mb	30 In

Diamond Bar September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	29°C / 85°F	18°C / 65°F	23°C / 74°F	359 hours	0.00 mm / 0.00 In	0 days	1012 mb / 30 In
2009	31°C / 87°F	18°C / 65°F	24°C / 75°F	354 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2010	29°C / 85°F	17°C / 62°F	22°C / 72°F	350 hours	0.20 mm / 0.01 In	0 days	1011 mb / 30 In
2011	28°C / 82°F	19°C / 65°F	23°C / 73°F	354 hours	10.50 mm / 0.41 In	4 days	1013 mb / 30 In
2012	31°C / 87°F	20°C / 69°F	25°C / 77°F	339 hours	4.30 mm / 0.17 In	2 days	1013 mb / 30 In
2013	29°C / 84°F	19°C / 66°F	23°C / 74°F	350 hours	2.40 mm / 0.09 In	1 days	1011 mb / 30 In
2014	30°C / 86°F	20°C / 68°F	25°C / 76°F	355 hours	2.90 mm / 0.11 In	0 days	1011 mb / 30 In
2015	31°C / 88°F	21°C / 69°F	25°C / 78°F	321 hours	17.00 mm / 0.67 In	2 days	1011 mb / 30 In
2016	29°C / 85°F	18°C / 65°F	23°C / 74°F	344 hours	3.80 mm / 0.15 In	1 days	1014 mb / 30 In
2017	29°C / 85°F	21°C / 69°F	25°C / 76°F	351 hours	5.10 mm / 0.20 In	1 days	1012 mb / 30 In
2018	30°C / 87°F	21°C / 70°F	25°C / 77°F	360 hours	0.00 mm / 0.00 In	0 days	1011 mb / 30 In
2019	29°C / 85°F	21°C / 69°F	25°C / 76°F	304 hours	2.80 mm / 0.11 In	0 days	1012 mb / 30 In
2020	33°C / 92°F	23°C / 74°F	28°C / 82°F	360 hours	0.00 mm / 0.00 In	0 days	1012 mb / 30 In
2021	32°C / 89°F	20°C / 68°F	25°C / 76°F	360 hours	0.00 mm / 0.00 In	0 days	1012 mb / 30 In
2022	33°C / 91°F	22°C / 72°F	27°C / 80°F	324 hours	21.50 mm / 0.85 In	2 days	1010 mb / 30 In
2023	28°C / 82°F	17°C / 63°F	22°C / 71°F	277 hours	17.11 mm / 0.67 In	1 days	1013 mb / 30 In
2024	31°C / 87°F	20°C / 69°F	25°C / 77°F	326 hours	0.18 mm / 0.01 In	0 days	1010 mb / 30 In

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