Gas prices in Arizona have hit a five-month high.

Officials with AAA Arizona said Thursday that the average statewide price for regular gasoline is $3.74 a gallon. That's more than 11 cents higher than last week and a rise of 56 cents since January.

Tucson has the lowest average gasoline price in Arizona, at $3.53 a gallon - though the price here jumped 15 cents from last week - while Yuma has the highest, at $3.86.

This week's national average is $3.78 per gallon, up by less than a penny from last week.

AAA analysts say refinery maintenance and the higher cost of crude oil have kept gasoline prices high so far this year.

Wyoming has the lowest average gas prices in the continental U.S., at $3.28 a gallon, with California at the highest, at $4.23 a gallon.