Oregon State

Avg weather in September
12 Hrs per day
42 mm per month
48 % avg
6 Mph avg

Oregon State Weather in September

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What’s the weather like in Oregon State in September?

September is a lovely time to visit Oregon State for mild temperatures and less rainfall than the winter. Explore the region’s vast landscape that includes lush forests, rugged mountains and a sleeping volcano overlooking the surrounding countryside.

Geographical influences

You’ll find Oregon State in the Pacific Northwest coast of America. The region is known for its natural beauty and is home to the deepest lake in the country. The Pacific border is on the west, which has the heaviest rainfall in the area. Taste delicious wines at the Willamette Valley’s vineyards and stop off at the Oregon food festival in Portland. If you prefer a more adventurous holiday, you can enjoy a sailing trip or river rafting in the morning, followed by some rock climbing on Smith Rock for amazing views at the top.


There’s less rain in September than upcoming months with an average rainfall of just 42mm. The average daily temperature is a pleasant 17°C with a humidity of 48%. If you’re enjoying a day out on the beach, it can be quite windy in September and the sea breezes travel at 6mph. You’ll have at least 12 hours of sunlight each day, which is only interrupted when it rains or on cloudy days of the month.

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