Last week, the average price for a gallon of regular gas across the state dropped two cents to $3.78.

But, AAA Arizona spokesperson Julian Paredes said an uptick in prices is likely on the horizon as crude oil prices per barrel have increased about $10. "The nationwide average is about $3.56, which is an increase of about 3 cents since last week. As long as the nationwide average keeps increasing, Arizona’s prices will keep increasing," he said.

The most expensive gas in the state is in Coconino County at $3.90 per gallon of regular. The cheapest continues to be in Graham County at $3.30.