Lake Oswego September Weather Averages Oregon, United States of America

September Weather Averages for Lake Oswego

High Temp	25°C	76°F
Low Temp	13°C	55°F
Avg Temp	18°C	64°F
Sunshine Hours	227 hours
Rainfall	49.35 mm	1.94 In
Rain days	4 days
Pressure	1016 mb	30 In

Lake Oswego September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	25°C / 78°F	11°C / 51°F	17°C / 63°F	302 hours	3.40 mm / 0.13 In	1 days	1017 mb / 31 In
2009	24°C / 76°F	12°C / 53°F	17°C / 63°F	255 hours	41.35 mm / 1.63 In	4 days	1017 mb / 31 In
2010	22°C / 72°F	12°C / 53°F	16°C / 62°F	205 hours	75.03 mm / 2.95 In	6 days	1015 mb / 30 In
2011	27°C / 81°F	13°C / 55°F	19°C / 66°F	280 hours	19.90 mm / 0.78 In	2 days	1017 mb / 31 In
2012	26°C / 79°F	11°C / 53°F	18°C / 64°F	331 hours	1.20 mm / 0.05 In	0 days	1019 mb / 31 In
2013	23°C / 73°F	12°C / 54°F	17°C / 62°F	174 hours	173.18 mm / 6.82 In	11 days	1013 mb / 30 In
2014	26°C / 79°F	13°C / 56°F	19°C / 66°F	280 hours	35.09 mm / 1.38 In	4 days	1015 mb / 30 In
2015	23°C / 74°F	11°C / 51°F	16°C / 61°F	195 hours	21.38 mm / 0.84 In	5 days	1016 mb / 30 In
2016	23°C / 73°F	10°C / 51°F	16°C / 61°F	227 hours	23.22 mm / 0.91 In	4 days	1019 mb / 31 In
2017	26°C / 78°F	15°C / 59°F	20°C / 68°F	212 hours	69.61 mm / 2.74 In	6 days	1015 mb / 30 In
2018	24°C / 75°F	13°C / 55°F	18°C / 64°F	231 hours	18.33 mm / 0.72 In	4 days	1017 mb / 31 In
2019	22°C / 71°F	13°C / 55°F	17°C / 62°F	148 hours	91.51 mm / 3.60 In	8 days	1016 mb / 30 In
2020	27°C / 81°F	16°C / 61°F	21°C / 70°F	236 hours	72.67 mm / 2.86 In	4 days	1016 mb / 30 In
2021	25°C / 77°F	12°C / 54°F	18°C / 65°F	224 hours	65.00 mm / 2.56 In	3 days	1016 mb / 30 In
2022	27°C / 81°F	14°C / 57°F	20°C / 68°F	236 hours	8.00 mm / 0.31 In	1 days	1014 mb / 30 In
2023	24°C / 75°F	12°C / 54°F	17°C / 63°F	190 hours	49.75 mm / 1.96 In	2 days	1016 mb / 30 In
2024	24°C / 76°F	14°C / 57°F	18°C / 65°F	210 hours	24.44 mm / 0.96 In	2 days	1015 mb / 30 In

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