National Weather Service United States Department of Commerce

Looking ahead to the weekend. A building high will quickly bring temperatures into the 90s over the weekend. Expect highs to remain in the 90s through the weekend and through the first half of next week. There is also some concern as overnight lows should remain in the 70s. The southwest flow will increase the humidity as well. There is the potential for excessive heat this weekend.
Unfortunately, the warm and humid beach weather this weekend will clash with dangerous swimming conditions due to large waves and strong currents. Stay cool, but stay out of Lake Michigan both Saturday and Sunday.
Before the really hot weather begins, thunderstorms will likely roll through Northern Michigan early Saturday morning, and perhaps extend south into Central Lower Michigan. These storms could bring strong wind gusts or large hail to a few spots.
Heat is the leading cause of weather-related deaths in the United Sates with the CDC estimation 1,220 people are killed by extreme heat every year. The slide shows not only some of the concerns from heat but steps you can take to prevent heat related injuries.