Gasoline prices at the pump around Arizona are lower again this week. Officials with AAA Arizona say that the average statewide price for unleaded regular gasoline is at $3.31 a gallon, almost four cents lower than last week. This week's national average is at $3.37 per gallon, down by nearly six cents from the previous week. AAA analysts say prices could continue to drop "barring unforeseen circumstances, such as hurricane activity." Glendale has the lowest average gasoline price in Arizona at $3.23 a gallon while Flagstaff has the highest at $3.54. South Carolina has the lowest average gas prices in the continental United States at $3.09 a gallon with California having the highest at $3.89 a gallon.