Gas Prices In Tennessee Have Increased The Past 13 Consecutive Days For An Average Total Of 15 Cents Per Gallon. Drivers Are Now Paying An Average Price Of $2.19 Per Gallon For Regular Unleaded. Triple-A Spokeswoman Stephanie Milani Says Prices Should Be Around $2.74 A Gallon By Memorial Day Weekend. Gas Prices May Fluctuate Over The Next Couple Of Weeks.