Extremely cold temperatures will continue through the weekend. Snowfall from a fast-moving "clipper-type" disturbance from Canada is moving out of the area. But, clear skies Saturday evening will keep things chilly overnight, especially in northeastern Washington around Newport, Diamond Lake, and Deer Park Priest River.
Tomorrow high pressure will have finished its ridge keeping out those afternoon flurries. This should give us a little more sunshine, warming things up a little, but not much. Another consider is stale air and fog, which will be trapped in the area all weekend.
On Martin Luther King day we will get into the teens maybe the 20's by parade time. We should be mostly cloud free with hazy skies over the area. We will still be on the east of a little disturbance so we should continue to stay free of flurries.
When will it warm up? Tuesday night that disturbance breaks away the ridge and will stir up this stubborn cold air and give us a little change in the bitter cold.