First Alert Forecast December 21, 2020 6:04 am First Alert Forecast: Santa Ana Winds Return This Week Here’s a look at your holiday week forecast. Belen De Leon has the forecast for Monday Dec. 21, 2020. US & World Videos 3:31 First Alert Forecast: Mostly Cloudy Saturday 3:12 First Alert Forecast: Rain this weekend 3:46 First Alert Forecast: Weekend Sprinkle Chance 3:47 First Alert Forecast: Morning Clouds & Fog 3:03 First Alert Forecast: More Clouds & Fog