San Francisco January 28, 2018 8:16 am Vianey's Forecast: Chilly Start, High Clouds Later NBC Bay Area’s Vianey Arana previews a cold start across the Bay Area before temperatures jump into the 60s. US & World Videos 2:04 Jeff's Forecast: Weekend rain update 3:51 Jeff's Forecast: Heat to fade as weekend rain is on the way 2:23 Forecast: Warm and windy day 1:19 Kari's forecast: Warm and windy day 2:37 Jeff's Forecast: Wind, warm temps and rain returns this weekend