First Alert Forecast September 3, 2021 6:14 am First Alert Forecast: Warming Up for the Holiday Weekend Temperatures are climbing into the weekend. Belen De Leon has the forecast for Friday Sept. 3, 2021. US & World Videos 3:46 First Alert Forecast: Beautiful Week Ahead 3:18 First Alert Forecast: Breezy Sunday 3:31 First Alert Forecast: Mostly Cloudy Saturday 3:12 First Alert Forecast: Rain this weekend 3:46 First Alert Forecast: Weekend Sprinkle Chance