Triple-A reports only three states have seen a bigger jump in gas prices than Wisconsin. The average price in the Badger State stands at three-dollars, 93-cents a gallon – up 20 cents from last Thursday. Gas prices are rising nationwide. As of Monday, the national average price for a gallon of gas ranges between 3-78 and 3-80 per gallon. Mississippi has the lowest average price at just over 3-05, while California tops the list at 6-38 a gallon.