RUTHERFORD COUNTY, TN – Average gasoline prices in Tennessee have risen 3.4 cents per gallon in the last week, averaging $3.06/g today, according to GasBuddy’s survey of 3,821 stations in Tennessee. Prices in Tennessee are 10.4 cents per gallon lower than a month ago and stand 40.2 cents per gallon lower than a year ago. The national average price of diesel has fallen 2.3 cents in the last week and stands at $3.76 per gallon.