Seattle, Washington – A colder, more active weather pattern is expected to settle over the Pacific Northwest by Thursday, bringing below-normal temperatures and an increased risk of rain and mountain snow across both Washington and Oregon, with impacts expected on travel, infrastructure, and daily routines.
According to the National Weather Service and NOAA’s Climate Prediction Center, the 8–14 day outlook through the middle of next week favors below-average temperatures across the region, paired with above-average precipitation. Daytime highs are expected to run several degrees below typical mid-February levels, keeping lowland areas cool while supporting frequent snowfall in the Cascades.
Western Washington and Oregon, including Seattle, Tacoma, Olympia, Portland, Salem, and Eugene, are expected to see recurring rounds of rain. Overnight lows near or below freezing could create slick conditions on untreated roads, bridges, and elevated ramps during early morning hours. East of the Cascades, colder air will support persistent snow cover and locally hazardous travel.
Mountain snow is expected to be a recurring issue. WSDOT and ODOT warn that Snoqualmie Pass, Stevens Pass, White Pass, Santiam Pass, and Willamette Pass may see periods of heavy snow, reduced visibility, and chain requirements as multiple systems move through.
The colder, wetter pattern shows no immediate signs of breaking before midweek. Additional advisories, mountain travel alerts, and flood-focused statements may be issued as precipitation totals increase and each system moves inland.
