September weather forecast and climate
Oregon, USA

Flag of Oregon, USA
Flag of Oregon, USA

Weather in September

September has comfortable conditions in Oregon with the arrival of the fall season. The weather is pleasant, and light breezes make the evenings enjoyable near the coast. The autumn wears a colorful cloak, which grows in beauty by the third week of September.
The temperatures are moderate, with the majority of the state registering average high temperatures below 85°F (29.4°C). Toketee Falls in the Cascade Mountains is in the 45°F (7.2°C) to 75°F (23.9°C) range, while Summer Lake in eastern Oregon registers between 43°F (6.1°C) to 79°F (26.1°C). Early fall sees an uptick in rainfall with an average of 2" (51mm) to 4" (102mm) across the state. The skies are bright with at least 20 sunny days in the month.
Mountain trails remain open, but crowds are fewer compared to the peak tourist season. September is an excellent time to experience the majestic beauty of the state amid moderate weather. Many locals describe fall as their favorite season in Oregon. Wear a light jacket to encounter the breezy fall evenings.


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