The national average gasoline price fell 2 cents to $2.71 per gallon, as demand saw a "small dip" during the week ending Aug. 5, according to AAA.

The average price is now 4 cents lower than a month ago and 15 cents cheaper than a year ago. Overall summer demand remains robust, said Jeanette Casselano, AAA spokesperson.

"While gas prices continue to drop, the rate at which they are decreasing has slowed," Casselano said. "On the week, most states saw cheaper pump prices of only a few pennies and motorists can expect this trend to continue into early August."

Motorists can find gasoline for $2.75 or less at 65% of the stations across the country.

States with the largest monthly decreases include Florida (17 cents), Alaska. (17 cents), Michigan (14 cents), Illinois (13 cents), Delaware (12 cents), California (10 cents), Kentucky (9 cents), Arizona (9 cents), Colorado (9 cents), and Idaho (9 cents).

States with the least expensive markets include Louisiana ($2.33), Mississippi ($2.33), Alabama ($2.35), Arkansas ($2.37), South Carolina ($2.37), Oklahoma ($2.41), Tennessee ($2.43), Texas ($2.44), Missouri ($2.45), and Kansas ($2.46).

Meanwhile, the average price for a gallon of diesel fell two-tenths of a cent to $3.032, which is 19.1 cents lower than a year ago, according to the U.S. Energy Information Administration.