Portland Weather Forecast

Clouds increase Monday. Slight shower chance.


Here is your updated Portland Weather Forecast.

The last day of November will be a cold one.  Expect increasing clouds throughout the morning.  Those clouds lock in the cool temperatures.  Daytime highs will be in the upper 30s, making it the coldest day since early January.  A freezing rain advisory lasts until noon from Woodburn through Roseburg and from the Coast Range through the Cascade Foothills.  A weakening system is bringing a wintry mix over the Coast Range and into the central and southern Willamette Valley.  Oregon State Police is reporting several crashes on I-5 between Eugene and Roseburg.  It doesn’t take much moisture to make roads slick, so take it easy out there.  By the time showers make it to the Portland metro area, temperatures will be above freezing.

Tuesday will be chilly and dry up until evening.  A more potent storm moves inland Tuesday night.  I expect rain in the valley Tuesday night through much of the day Wednesday.  There is concern about  freezing rain in the Columbia River Gorge Tuesday night and Wednesday.  Cold air is locked in place and will take some time to scour out and transition to above freezing temperatures.  If your travel plans take you through the Gorge Tuesday or Wednesday, you’ll want to watch the forecast closely.

Weather remains active, but mild through next weekend.

Sally Showman | KOIN 6 Meteorologist
sally.showman@koin.com | Follow me on Facebook or Twitter

Stay in touch with the PDX Weather app — everything you need to know at your fingertips.