March 5, 2018 6:28 am Today's Forecast: Chilly Start in the Morning NBC Bay Area’s Forecaster Vianey Arana has the details for the Microclimate Forecast. US & World Videos 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 2:12 Kari's forecast: Rainy Saturday ahead 2:48 Jeff's Forecast: Dry Friday; rain returns this weekend