Sunshine, heat builds around Portland on Memorial Day weekend

PORTLAND, Ore. (KOIN) -- Summer heat slowly builds as the unofficial start to the summer season gets underway this weekend.

Morning clouds will fade to mostly sunny skies by the afternoon hours. That sunshine will push afternoon highs into the low to mid-70s for the Willamette Valley on Friday. That's the start of Portland's latest warming trend.

Oldest harbor seal in world turns 50 at Oregon Coast Aquarium

Portland's Rose Festival and City Fair get underway on Friday.