Average gas prices in North Carolina have fallen 5.6 cents per gallon in the last week, now averaging $3.19/g, according to GasBuddy’s survey of 6,092 stations in North Carolina. Prices in the state are 11.2 cents per gallon lower than a month ago and stand 23.2 cents per gallon lower than a year ago. The national average price of diesel has fallen 6.9 cents in the last week and stands at $4.45 per gallon.