August 17, 2018 11:35 pm Jeff's Forecast: Weekend Heat & Spare The Air High pressure brings the heat Saturday. Chief Meteorologist Jeff Ranieri has more on where 100s are possible. Plus, the air quality alert in your Microclimate Forecast. US & World Videos 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 3:48 Jeff's Forecast: Weekend rain timeline