Moisture streams in from the north, keeping light rain in the picture
overnight. High pressure builds temporarily tomorrow, pushing
precipitation northward and allowing temperatures to rise slightly above
seasonal norms. A shift occurs Sunday as a system from Alaska flattens
the upper-level flow, driving a weak front and widespread rain back into
the region.
Cold air funnels in Monday and Tuesday, dropping snow levels
significantly. While snow may mix with rain at low elevations during the
coldest morning hours, accumulation remains unlikely on valley floors
due to warm ground temperatures. By Wednesday, an atmospheric river
takes aim at the area, scouring out the cold air and delivering steady
rain.