The fresh snow that blanketed Western Washington Sunday night is turning to slush this morning with the arrival of temperatures warming into the upper 30s to mid 40s.

Still, enough snow was on the ground in Snohomish County this morning to close classes in Index and prompt late starts in Everett, Edmonds, Mukilteo, Darrington, Snohomish and Sultan. Edmonds Community College also was running late.

For many students, today marked the end of a three-week winter break.

The outlook for the week calls for rain with the arrival of another storm system Tuesday night,

“There’s no snow in the forecast for the lowlands for the next week,” said Dennis D’Amico, a meteorologist with the National Weather Service’s Seattle bureau.

D’Amico said 5 inches of snow fell in Everett overnight Sunday. About 3 inches blanketed Lynnwood and Mill Creek had 2 inches of snow. By the morning commute, much of the snow had melted from the roadways, although lawns and rooftops remained covered.

A winter storm warning and avalanche warning remain in effect for the Olympic Mountains and Cascade Range. The state Department of Transportation closed Snoqualmie Pass from North Bend to Ellensburg because of avalanche danger. Crews are monitoring the snow pack and avalanche control work will be done at several locations throughout the day, according to the state transportation agency.

No estimated time of reopening has been announced.

In the meantime, weather service officials will be keeping a close eye on area rivers, which could rise closer to flood state because of rain and melting snow in the forecast, D’Amico said.