September Rainfall and Precipitation in Oregon
Average rainfall, rainy days and the driest cities in Oregon, the United States of America in September.
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Best Places to Visit in Oregon in September
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Oregon.
Monthly precipitation
0 mm (0 in) dry → 150 mm (5.9 in) wet
Marker color shows total monthly precipitation in September: pale blue is dry, deep blue is wet.
Oregon precipitation in September: frequently asked questions
How much rainfall does Oregon, the United States of America receive in September?
In September, Portland typically receives modest rainfall, around 41 mm (1.6 in), making this a relatively dry month.
How many days does it rain in Oregon, the United States of America in September?
Expect around 8 days rainy days in Portland during September.
Is September part of the rainy season in Oregon, the United States of America?
September is generally a drier month for Oregon, the United States of America, falling outside the main rainy season.
What is the wettest city in September in Oregon, the United States of America?
Based on our records, Arch Cape receives the most rainfall in Oregon, the United States of America in September, averaging about 124 mm (4.9 in).
What is the driest city in September in Oregon, the United States of America?
Based on our database, Klamath Falls sees the least rainfall in Oregon, the United States of America in September, with around 8 mm (0.3 in) on average.
Interested in more climate information?
We have much more information about the climate in Oregon.
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