Prices topped out at $5.02 a gallon on June 14, according to AAA.
They declined slowly the rest of June, then began dropping more rapidly.
benchmark crude oil has recently dipped close to $90 a barrel from over $120 a barrel in June.
Republicans blame President Biden for the high gasoline prices, seizing on his decisions to cancel a permit for a major pipeline and suspend new oil and gas leases on federal lands.Biden said over the weekend that a family with two cars is saving $100 a month because prices have dropped from their peak in mid-June.
"Exxon made more money than God this year," he said in June.