High pressure brings sun to Oregon coast, Willamette Valley

PORTLAND, Ore. (KOIN) — Here comes the sunshine! 

High pressure over our region on Monday brings a sunny and warm afternoon to the coast and valley.  Monday's forecast around Portland is calling for temperatures to hover right around 70 degrees.

But it will be a cool start to Monday, especially in the southern part of the Willamette Valley. So much so -- that there is a Frost Advisory in place starting at 1 a.m. and lasting until 8am Monday across the southern Willamette Valley and upper Hood River Valley ...