VIDEO FORECASTMetro Detroit weather forecast April 21, 2020 -- 11 p.m. UpdatePublished:ย April 21, 2020, 11:20 PMTags:ย detroit weather, weather forecast, video forecast, 4 zone weather, forecast, weather, michigan weather, weather center, local 4casters, cold, 4 zoneMetro Detroit weather forecast April 21, 2020.