Michigan drivers are paying an average of $3.15 per gallon for regular unleaded gas, according to this week's report from AAA-The Auto Club Group. This is up 12 cents from the previous week. In metro Detroit,

That’s according to AAA’s gas price tracker, which reported the state average cost per gallon is currently $2.96, up three cents from the week before and four cents higher than last month. In Atlanta, the average per gallon was $2.98.

Average gas prices in and around Grand Rapids are up by 9.9¢ since last week, according to fuel surveyors, GasBuddy — 3.5¢ above the national average.

Here's a look at how weekly regional gas prices changed in Gulf Coast region last week compared with the week prior.

The price is 8 cents more than this time last month and 11 cents more than a year ago, according to the group.

The average gas prices in Baltimore have risen 25.6 cents a gallon in the past week, according to GasBuddy's recent survey.Prices in Baltimore are 51.6 cents a

In the Gem State, the lowest-priced station was $2.29 per gallon, whereas the most expensive station was $4.04 per gallon, a difference of $1.75 per gallon. The national average for a gallon of gas has dropped roughly six cents, with a new average price of $3.09 per gallon.

Average gasoline prices in Illinois have risen 2.5 cents per gallon in the last week, averaging $3.23/g,according to GasBuddy.Prices in Illinois are 0.9 cents

According to GasBuddy price reports, the cheapest station in Oregon was priced at $2.91/g Sunday while the most expensive was $4.15/g, a difference of $1.24/g. The lowest price in the state Sunday was $2.91/g while the highest was $4.15/g, a difference of $1.24/g.