Average gasoline prices in Tennessee have fallen 7.4 cents per gallon in the last week, averaging $2.76/g today, according to GasBuddy’s survey of 3,821 stations in Tennessee. Prices in Tennessee are 1.5 cents per gallon higher than a month ago and stand 31.2 cents per gallon lower than a year ago. The national average price of diesel has declined 1.3 cents in the last week and stands at $3.56 per gallon.