Average gasoline prices in North Carolina are unchanged in the last week, averaging $4.23/g yesterday, according to GasBuddy’s survey of 6,092 stations in North Carolina. Prices in the state are 41.8 cents per gallon higher than a month ago and $1.32/g higher than a year ago. The price of diesel has risen 3.0 cents nationally in the past week and stands at $5.55 per gallon.