The weather in Metro Detroit is expected to change dramatically this weekend, with temperatures dropping from the 70s to the 40s. This comes as temperatures are expected to return to normal by Saturday, a sharp drop that reminds that it is still March in Michigan. The change is due to a surge of mild air ahead of an approaching system and cooler air near the lakes keeping areas like the Thumb much chillier. A cold front will move through Sunday afternoon, bringing scattered showers and the potential of an isolated thunderstorm near the Ohio border. Temperatures will drop into the low 40s by Monday, contributing to a more seasonable and cooler feel. The free 4Warn weather app is available for purchase.