PORTLAND, Ore. (KOIN) — It’s about to feel like winter in the Portland metro and Willamette valley, and it may also look like winter with snow chances increasing.
A storm system moving in Sunday will bring in a chilly rain for most of the day with very cold air funneling in behind it. Snow levels will drop to 1500 feet, bringing potentially heavy snow to even the foothills of the mountains.
Temperatures will likely stay just above freezing Sunday night, meaning a potential for flakes to mix with the rain in the valley, but accumulation won’t be likely.
Monday will be an even colder day with another dose of moisture moving in.
Right now, forecast models show temperatures topping out in the upper 30s to low 40s. That means there will be a better chance of a rain/snow mix, if not all snow, at some point during the day.
But it will be tough for any snow to stick because the ground will be too warm and temperatures not quite cold enough.
Temps will likely fall below freezing Monday night, at which point most of the moisture will be cut off, limiting any accumulation.
Tuesday and Wednesday continue to stay very cold with highs struggling to get out of the upper 30s and lows around 29° to 33°.
It’s not likely we’ll see any snow those days as it looks to be too dry.
Bottom line: You’re going to need to bundle up starting Sunday and it’s looking more and more likely that we’ll see a few flakes fly. But it’s not looking likely that we will see snow stick to the ground just yet. There’s still time for things to change and the KOIN 6 weather team will continue to update you as we get closer in.