A strong ridge of high pressure will stay in place through the end of the week, keeping a temperature inversion locked in across the lower valleys. That means chilly mornings, areas of low clouds through at least Saturday. Grab the heavy coat for the mornings ahead!
Changes arrive late tonight as moisture begins to move in from the south. This is tied to a Pacific storm system approaching the California coast. Good news: rain steers clear of midnight!
Do grab the umbrella for Thursday, however, A warm front will move through the region on New Year’s Day, spreading valley rain and mountain snow from South to North.
Most locations will see rain, especially in the valleys. Snow levels will start around 4,000–5,000 feet, allowing some light mountain snow early on, but they will rise quickly behind the warm front to 7,000–8,000 feet by Friday morning. Because of this, snow will transition to rain even in the mountains…