Portland, Oregon – Snow levels will fall across northwest Oregon and southwest Washington tonight, bringing possible light snow to lower elevations early Tuesday morning.
According to the National Weather Service in Portland, snow is expected to develop late Monday and continue into Tuesday as colder air lowers snow levels to 1,000–1,500 feet overnight.
Forecasters say light snow could reach elevations near 500 feet between 3 a.m. and 10 a.m. Tuesday, although accumulation in lower areas is expected to remain limited.
A rain and snow mix may reach the valley floor north of Salem, though significant accumulation there is not expected. Higher elevations will see more consistent snowfall, especially across the Cascades.
The weather service noted that heavier accumulating snow is most likely above roughly 1,500–2,500 feet, particularly north of Oregon Route 22. Mountain locations in the Cascades could receive several inches of snow through Tuesday.
Drivers traveling through mountain passes should prepare for winter driving conditions, including slick roads and reduced visibility.
The National Weather Service advises motorists to check road conditions with ODOT and WSDOT before traveling, particularly across the Cascades and Coast Range. Officials also recommend slowing down and allowing extra travel time.
Commuters and students in areas near the 500-foot elevation range could see brief periods of light snow during the early Tuesday morning hours, though widespread disruptions are not expected.
Forecasters say conditions should gradually improve later Tuesday as precipitation decreases.
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