First Alert Forecast August 18, 2021 6:24 am First Alert Forecast: Well Below Normal Temperatures Highs will be in the 70s for some parts of SoCal. Belen De Leon has the forecast for Wednesday Aug. 18, 2021. US & World Videos 3:46 First Alert Forecast: Nice Weekend, Gusty Next Week 2:43 First Alert Forecast: Cloudy & Cooler Friday 3:47 First Alert Forecast: Thursday Warming 3:15 First Alert Forecast: New year, new forecast 3:13 First Alert Forecast: Foggy Start to 2025