The average price of a gallon of self-serve regular gasoline in Los Angeles County rose six-tenths of a cent on Sunday to $4.123 -- its highest amount since July 30, 2015 -- one day after increasing 2.9 cents.
The average price is 4.5 cents more than one week ago, 48.4 cents higher than one month ago and 46.2 cents greater than one year ago, according to figures from the AAA and Oil Price Information Service.
The Orange County average price rose two-tenths of a cent to $4.093 --also its highest amount since July 30, 2015 -- one day after rising 2.8 cents. It is 4.4 cents more than one week ago, 50.2 cents higher than one month ago and 46.9 cents greater than one year ago.
The higher prices are the result of a series of refinery issues that have reduced supply, according to Jeffrey Spring, the Automobile Club of Southern California's corporate communications manager.
CNS contributed to this report.