weather forecast December 21, 2019 12:30 am Weekend Rain Chance Rain will return this weekend. Chief Meteorologist Jeff Ranieri has the updated timeline and when you’ll need that umbrella in your Microclimate Forecast. US & World Videos 3:19 Bay Area forecast: Clearing, warming ahead 2:51 Cinthia's forecast: Spring storm, cooler temperatures 2:58 Jeff's Forecast: Saturday rain drops temps and brings major Sierra snow 3:25 Bay Area Forecast: Storm brings rain, colder temps and big Sierra snow 2:31 Forecast: Rainy Saturday ahead