Northcentral Washington weather today is calling for mostly sunny skies and mild high temperatures into the mid 40’s.
But, by tonight and into Saturday, a compact low pressure will bring rain in the lower elevations and snow to the mountain passes. There is a 60% chance of rain beginning late tonight and overnight and a 50% chance of mainly rain Saturday morning. At this time, it looks like snow levels overnight will fall into the 2000-2500 foot range. We will have to keep a close eye on temperatures and dewpoints this afternoon and evening to see if 1 to 3 inches of snow will be possible for the Waterville Plateau, Wenatchee/Leavenworth area (above 2000 feet), and along the Highway 2 corridor across the West Plains. High temperature Saturday around 40 degrees.
Then by Sunday through almost all of next week, weather models continue to show upper ridging off the coast on Sunday with a broad trough over the area allowing much colder Canadian air to funnel in. The trough gradually pulls away by Tuesday and is replaced by drier northerly flow, which will continue to bring in cold air. The ridge then moves over the area mid to late week. High temperatures Sunday through Wednesday will drop each day starting with mid 30’s Sunday and around 30 degrees for the high on Wednesday. Overnight low temperatures will also be the coldest we have seen this season with temps in the upper teens to lower 20’s.