Average gasoline prices in Oklahoma have risen 0.6 cents per gallon in the last week, averaging $3.11/g today, according to GasBuddy’s survey of 2,294 stations in Oklahoma. Prices in Oklahoma are 7.4 cents per gallon lower than a month ago and stand 139.8 cents per gallon lower than a year ago. The national average price of diesel has fallen 0.2 cents in the last week and stands at $3.84 per gallon.