weather September 4, 2020 11:35 pm Jeff's Forecast: Heat Wave 100 to 110° Chief Meteorologist Jeff Ranieri tracks the hot and dangerous temperatures from San Francisco to Inland Valleys as we head into Labor Day Weekend in your Microclimate Forecast. US & World Videos 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 2:42 Forecast: Warm day, Saturday rain