The auto club said Monday the average is about a penny less per gallon less than last year at this time.
Dearborn-based AAA Michigan surveys 2,800 Michigan gas stations daily.
Of the cities surveyed, AAA Michigan said the cheapest price for self-serve unleaded fuel is in the Traverse City area, where it's $3.69 a gallon.
The highest average is in the Ann Arbor area at $3.80.
More: Gas prices section