Spokane, WA – The first measurable snow of the season is expected to hit the higher elevations of eastern Washington late Sunday into Monday morning, bringing early winter driving conditions along I-90 and surrounding mountain routes. Snow levels will fall to near 3,500 feet as colder Canadian air sweeps south, signaling a sharp seasonal shift across the region.
According to the National Weather Service in Spokane, a strengthening low-pressure system will drop into the Northwest on Sunday, spreading precipitation over the Cascades and northeast mountains. As temperatures tumble Sunday evening, rain will change to snow over Lookout Pass, Snoqualmie Pass, and Loup Loup Pass, with slick and snow-covered conditions possible before dawn Monday.
Forecasters warn that travel across I-90 and secondary mountain roads could be difficult overnight Sunday, especially for those hauling trailers or traveling before sunrise. Light to moderate snow accumulations are expected above 3,500 feet, while lower valleys—including Spokane and Ritzville—should see mostly rain mixed with wet snowflakes toward early Monday.
Drivers are urged to check WSDOT road updates, pack winter gear, and avoid unnecessary mountain travel during the heaviest snow. Outdoor recreationists should prepare for freezing overnight lows and rapidly changing weather.
By Monday afternoon, snow will taper off as skies clear, but morning ice and frost may linger through midweek as temperatures dip into the upper 20s and low 30s.
