WHATCOM COUNTY, Wash. — Forecasters with the National Weather Service Seattle office say a weather system is expected to move across western Washington from late Saturday into Monday bringing lowland rain and mountain snowfall. No river flooding is expected, but rivers are expected to rise.
Winds will also become breezy as this system digs into the Pacific Northwest, with gusts reaching 20 to 35 mph. Snow levels around 5500-6000 feet will fall to near 2000-2500 feet by Sunday night, with a high chance (60% to 70%) of 1 to 2 inches of accumulating snowfall through the Cascade mountain passes.
The upper trough axis will shift inland early Monday morning, bringing in another round of showers across western Washington. Snow levels will remain near 2000-2500 feet, with an additional 2 to 4 inches of snow accumulation possible through the Cascade passes. Precipitation will taper off Monday afternoon and evening as weak ridging builds inland, giving way to some occasional sun breaks among cloudy skies.
– National Weather Service Seattle office (November 22, 2025)
Forecasters add that heavier precipitation is expected during the middle of next week. But the location and duration remain uncertain.
River level forecasts can change frequently so motorists and property owners are advised to monitor the Nooksack River level forecast.
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