Average gasoline prices in North Carolina have risen 0.3 cents per gallon in the last week, averaging $3.14/g today, according to GasBuddy’s survey of 6,092 stations in North Carolina. Prices in the state are 19.7 cents per gallon higher than a month ago and 4.7 cents per gallon higher than a year ago. The national average price of diesel has fallen 7.2 cents in the last week, now at $4.56 per gallon.