Traditional bars, nightclubs and strip clubs will have to end indoor service.
Also on Wednesday, Whitmer signed a package of bills allowing restaurants to serve alcoholic drinks to-go and via delivery.
READ: Michigan bars, restaurants can now deliver alcoholic drinks, sell them to-go, offer 2-for-1 dealsFollowing recent outbreaks tied to bars, I am taking this action today to slow the spread of the virus and keep people safe, Whitmer said.
Nearly 25% of diagnoses in June were of people ages 20 to 29, up from roughly 16% in May.
That shift aligns with national trends, and the evidence suggests that young people may be driving a new phase of the pandemic, according to state officials.