The average price of a gallon of self-serve regular gasoline in Riverside County dropped two-tenths of a cent Sunday to $5.531.
The average price is 1.4 cents less than one week ago, but 24.8 cents more than one month ago and $1.217 more than one year ago, according to figures from the AAA and Oil Price Information Service.
It has increased 98 cents since the start of the joint U.S./Israel attack on Iran on Feb. 28, which sent oil prices higher and drastically accelerated increases at the gas pump.
The national average price dropped a half-cent to $4.065. It is 5.3 cents more than one week ago, 12.2 cents more than one month ago and 92.3 cents more than one year ago. It has increased $1.083 since the attack on Iran.
The national average price is at its highest amount ever this late in the calendar year, according to Patrick De Haan, head of petroleum analysis at GasBuddy, which provides real-time gas price information from more than 150,000 stations.