August in Beaverton averages a daily high of 27.2°C with nights around 15°C. Expect roughly 3.1 wet days totalling 14.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Beaverton is July–September.
Based on PORTLAND KGW TV, OR US (9.6km), 1995–2024. 29 years of August data.