bay area weather 21 hours ago Kari's forecast: Clear and warm Meteorologist Kari Hall tracks a weekend warm-up in the Microclimate Weather forecast. US & World Videos 1:51 Kari's forecast: Summer heat returns 2:46 Forecast: Early fog chance as temps to soar by the weekend 3:21 Forecast: Hotter Bay Area weekend 1:54 Kari's forecast: Clearing and warmer 2:39 Jeff's forecast: Big weekend heat on the way