weather September 16, 2022 4:57 pm What Is La Niña? NBC Bay Area’s Vianey Arana talks about La Niña and tells us the different between that and El Niño US & World Videos 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 1:43 Kari's forecast: Warm day, Saturday rain