Over the next two days, a small storm system will dive southward along the western coastline of Canada and the United States. It will bring Southern California a quick chance for rain on Thursday.
An isolated light shower is possible Thursday morning (20%), then a better chance for a shower or quick downpour will arrive in the afternoon and early evening (40%). The rain chance will exit by 10 PM.
Snow levels will be fairly high for this event, 6,000 to 7,000 feet, so accumulations will be minimal to none.