National Weather Service United States Department of Commerce

Very hot conditions will build into the region this week along with daily chances for showers and thunderstorms. Many locations could feel close to 100 degrees, and any storms that do develop could contain large hail, damaging winds, and frequent lightning! Make sure to limit time outdoors and to stay hydrated!
Hottest conditions are expected Tuesday, but there is at least a moderate risk for heat related impacts each day this week.
There is an Extreme Heat Risk across the Michigan this week. The greatest risk for dangerous heat is across the Lower Peninsula by midweek.
Strong to severe thunderstorms can't be ruled out late Monday across the western half of Upper Michigan. Should a line of strong thunderstorms develop, large hail and strong winds will be the greatest hazards with these storms.