The National Weather Service says today's snow will be followed by a cold streak statewide. After an expected 5 to 8 inches of snow today locally,overnight lows are expected to linger around zero.
Snow is expected to continue in the Walla Walla area Tuesday morning, then stay away until at least Black Friday. As the snow stops, the mercury will drop, the weather service says, with slight warming - but not above freezing - forecast for Wednesday and Thanksgiving.
The snow in parts of Western Washington has prompted the Transportation Department to de-ice some bridges and overpasses.
Forecasters expect 1-to-3 inches of snow this afternoon between Olympia and Portland, but no accumulations in the Seattle area.
Clearing skies Tuesday are expected to drop Western Washington temperatures below freezing, too, but a new front is expected to bring warmer temperatures and rain for Thanksgiving Day.
Blowing snow is forecast today for parts of eastern Washington with heavy snow in southeast Washington.
The Transportation Department reports snow and ice Monday morning on Snoqualmie, Stevens and White passes.