After one of the most dismal periods of incessant clouds and rain in a long time, we are finally getting a break.
Here is the precipitation forecast for the next 72h. Although the NW coast will get some precipitation on Monday afternoon, most of western WA and Oregon will be dry.
But with a wet surface and high pressure over the region (with attendant weak winds and clearing skies at night), expect a lot of fog, particularly in the morning. And if the temperatures drop below freezing, then roadway icing could be a threat.