Statewide gas prices were unchanged over the past week in Michigan. According to AAA of Michigan, the statewide average daily gas price is $2.11 a gallon. That’s 23 cents more than this time last month but still 62 cents less than this time last year. The most expensive fuel can be found in Marquette and Metro Detroit this week, while the lowest prices are in Traverse City. Locally, Port Huron area pumps are on average $2,09 a gallon for regular unleaded.