Summer might still have a hold on Oregon with lingering heat and humidity, but hints of autumn are already peeking through. A few trees around the state have started to show flashes of gold and crimson, offering a small preview of the spectacular color change to come.
According to a report from KOIN 6 Chief Meteorologist Josh Cozart, the first real pops of fall color will arrive in the higher elevations of Oregon by mid-September. Stress from heat and drought is causing some trees to turn early, but the real transformation depends on cooler temperatures, less daylight, and elevation.
Colors Arrive in the Mountains First
If you’re eager to catch early fall foliage, head to the Cascades or Coast Range. By September 14, higher elevations are expected to be glowing with reds, oranges, and yellows, all framed against the deep greens of Oregon’s evergreen forests. The cooler air, shadier slopes, and shorter days in the mountains give those trees a head start.
When the Valley Will See Change
For the rest of us closer to sea level, the big fall show comes a little later. Cozart notes that trees in the Willamette Valley — including those in and around Portland, Eugene, and Salem — typically start showing real color in late September. Ash trees and maples are among the first to give up their summer green.
The peak season for the Cascades will likely hit in early October, while the Willamette Valley and most of western Oregon will have to wait until the end of October for their most dazzling display. That’s when neighborhoods, parks, and scenic drives truly come alive with autumn brilliance.
Fall Foliage Timeline in Oregon
- Mid-September – First color changes in the Cascades and Coast Range
- Late September – Scattered pops of color in the Willamette Valley
- Early October – Peak color in the Cascades
- Late October – Peak fall foliage across the Willamette Valley and western Oregon
So while summer still lingers, autumn is already around the corner. Time to start planning those cozy drives, weekend hikes, and scenic photo sessions — Oregon’s most colorful season is about to unfold.
This fall foliage update is based on reporting from KOIN 6 and Chief Meteorologist Josh Cozart.
