September weather forecast and climate
Washington, USA

Flag of Washington, USA
Flag of Washington, USA

Weather in September

September brings the colorful autumn season to Washington with warm temperatures amid a slight uptick in rainfall. The Pacific Coast sees 2" (51mm) to 4" (102mm) of rain, while the average precipitation in the state is a moderate 2" (51mm).
The average high temperatures are in the ideal 65°F (18.3°C) to 75°F (23.9°C) range, while the nights are relatively cooler in the average low-temperature range of 40°F (4.4°C) to 50°F (10°C). The skies are partly cloudy, with an average of 16 to 18 sunny days statewide.
Fall is the best time to visit Wenatchee, with bustling orchards and farms that export more apples than anywhere else in the world. The leaves begin to change colors by mid-September as the beautiful autumn is evident in the atmosphere. It is routine to encounter wildlife in the natural preserves during the fall nights and mornings. Pack warm clothes for breezy evenings and cold nights. Expect temperatures to drop with each passing day in September in Washington.


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