Western Lowlands: The western lowlands of Oregon, including the Willamette Valley and the coast, experience mild summers with average temperatures ranging from 15 to 22°C (59 to 72°F).
Eastern Interior: The eastern interior of Oregon, including the high desert and the mountains, experiences hot summers with average temperatures ranging from 21 to 27°C (70 to 80°F).
Southern Coast: The southern coast of Oregon, including the area around Brookings, experiences relatively cool summers with average temperatures ranging from 13 to 18°C (55 to 65°F).
It's important to note that these are average temperatures and the actual temperature during the summer months may vary depending on the specific location and microclimate within Oregon.