Ontario September Weather Averages California, United States of America

September Weather Averages for Ontario

High Temp	32°C	90°F
Low Temp	19°C	66°F
Avg Temp	25°C	77°F
Sunshine Hours	340 hours
Rainfall	5.67 mm	0.22 In
Rain days	1 days
Pressure	1012 mb	30 In

Ontario September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	33°C / 92°F	17°C / 63°F	24°C / 75°F	360 hours	0.00 mm / 0.00 In	0 days	1012 mb / 30 In
2009	34°C / 93°F	17°C / 63°F	25°C / 76°F	354 hours	0.40 mm / 0.02 In	0 days	1012 mb / 30 In
2010	32°C / 90°F	16°C / 60°F	23°C / 74°F	348 hours	0.60 mm / 0.02 In	1 days	1011 mb / 30 In
2011	31°C / 88°F	18°C / 64°F	24°C / 75°F	350 hours	8.00 mm / 0.31 In	3 days	1013 mb / 30 In
2012	33°C / 91°F	20°C / 67°F	26°C / 78°F	340 hours	7.60 mm / 0.30 In	2 days	1013 mb / 30 In
2013	31°C / 88°F	18°C / 64°F	24°C / 75°F	349 hours	2.70 mm / 0.11 In	2 days	1010 mb / 30 In
2014	32°C / 89°F	19°C / 66°F	25°C / 77°F	349 hours	2.50 mm / 0.10 In	0 days	1010 mb / 30 In
2015	33°C / 91°F	20°C / 69°F	26°C / 78°F	315 hours	18.40 mm / 0.72 In	3 days	1011 mb / 30 In
2016	31°C / 88°F	18°C / 65°F	24°C / 75°F	349 hours	1.60 mm / 0.06 In	0 days	1013 mb / 30 In
2017	31°C / 87°F	21°C / 69°F	25°C / 77°F	345 hours	7.80 mm / 0.31 In	2 days	1012 mb / 30 In
2018	32°C / 90°F	22°C / 71°F	26°C / 80°F	360 hours	0.00 mm / 0.00 In	0 days	1011 mb / 30 In
2019	31°C / 88°F	21°C / 69°F	25°C / 77°F	324 hours	4.70 mm / 0.19 In	1 days	1012 mb / 30 In
2020	35°C / 94°F	22°C / 72°F	28°C / 82°F	360 hours	0.00 mm / 0.00 In	0 days	1012 mb / 30 In
2021	33°C / 92°F	18°C / 64°F	25°C / 76°F	359 hours	0.00 mm / 0.00 In	0 days	1013 mb / 30 In
2022	34°C / 93°F	20°C / 68°F	26°C / 78°F	324 hours	18.80 mm / 0.74 In	2 days	1011 mb / 30 In
2023	28°C / 83°F	15°C / 59°F	21°C / 69°F	291 hours	17.44 mm / 0.69 In	3 days	1013 mb / 30 In
2024	32°C / 89°F	19°C / 66°F	24°C / 76°F	327 hours	0.19 mm / 0.01 In	0 days	1011 mb / 30 In

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