All Whatcom County public schools will be closed Monday, and countless travelers remain stranded after at least a foot of snow blanketed the Bellingham area in a 24-hour period.
Several community colleges announced class cancellations and Western Washington University was to open at 10 a.m., which is two hours late.
Law-enforcement officials blame the slick weather conditions for multiple traffic accidents, including the death Sunday of a stranded driver after he was hit by his rolling car.
The National Weather Service issued a winter weather advisory for San Juan County, western Skagit County and the Strait of Juan de Fuca through early Monday. Winds of 20 to 30 mph gusted up to 40 mph all day Sunday.
Whatcom County temperatures are expected to rise to about 40 degrees on Monday.
Winter driving was equally treacherous in both mountain passes, prompting closures for several hours due to possible avalanche conditions.
Forecasters predict another foot of snow in the Snoqualmie Pass area by Monday. The Seattle area is expected to experience scattered showers with high temperatures in the mid-40s.