Photo by Vince Taroc.

Photo by Vince Taroc.

The national average price of a gallon of regular unleaded increased 3 cents to $2.35 for the week ending Aug. 7 due to summer demand "running full speed ahead," according to AAA.

The price level is now 9 cents higher than a month ago and 23 cents above the same time a year ago. Gasoline demand has reached a new weekly record of 9.84 million barrels per day. The 2017 demand average over the past four weeks is now 1% ahead of the same period last year.

Drivers can expect prices to continue to rise, according to AAA.

States with the least expensive gasoline include South Carolina ($2.09), Mississippi ($2.09), Alabama ($2.10), Arkansas ($2.11), Oklahoma ($2.13), Tennessee ($2.14), Virginia ($2.15), Louisiana ($2.16), Missouri ($2.17) and Texas ($2.17).

States with the largest weekly change include Missouri $2.17 (up 9 cents), Iowa $2.31 (up 8 cents), Indiana $2.30 (down 8 cents), Nebraska $2.32 (up 7 cents), North Dakota $2.31 (up 7 cents), Texas $2.17 (up 7 cents), South Carolina $2.09 (up 7 cents), Alabama $2.10 (up 7 cents), Michigan $2.41 (down 7 cents) and Ohio $2.25 (down 7 cents).

Meanwhile, the average price of a gallon of diesel increased 5 cents to $2.581, which is 26.5 cents higher than a year ago.