By The Associated Press

Gasoline prices in Arizona have fallen to a three-month low.

Officials with Triple-A Arizona said Thursday that the average price around the state for unleaded regular gasoline is $3.72 a gallon at the pumps. That's down by almost 4 cents from last week.

This week's national average is $3.62 per gallon, a decrease of nearly 6 cents from last week.

Tucson has the lowest average gasoline price in Arizona at $3.60 a gallon, while Flagstaff has the highest at $3.85.

South Carolina has the lowest average gasoline prices in the continental United States at $3.24 a gallon. Washington has the highest at $4.28 a gallon.