Microclimate Forecast 20 hours ago Forecast: Hotter Bay Area weekend Chief Meteorologist Jeff Ranieri tracks what’s causing the incoming heat and how long it lasts in your seven-day Microclimate Forecast. US & World Videos 2:41 Kari's forecast: Summer heat this weekend 1:51 Kari's forecast: Summer heat returns 2:46 Forecast: Early fog chance as temps to soar by the weekend 2:43 Kari's forecast: Clear and warm 1:54 Kari's forecast: Clearing and warmer