More Good News For Motorists. AAA Mid Atlantic Said Prices At The Pump Continue To Fall Like Autumn Leaves. Drivers Paid The Lowest September Gas Prices Since 2010. The National Average This Week Is $3.29 A Gallon, Down Three Cents Since Last Week. Tammy Arnette With AAA Says Several Factors Are Contributing To The Lower Gas Prices Including An Uneventful Hurricane Season So Far, Plenty Of Gas Supply, And Crude Oil Trading At Below 90 Dollars A Barrel. Tennessee Motorists Are Paying On Average This Week $3.09, Down Two Cents Since A Week Ago. In Virginia, The Average Price Of Gas Is #3.10, Down Two Cents Since Last Week.