The average price of gasoline in the U.S. has dropped four cents over the past two weeks to $2.25 for regular grade.
Industry analyst Trilby Lundberg said Sunday it's the first time the price dropped in 11 weeks. Part of the reason is seasonally lower gasoline demand.
The Lundberg Survey found the average price of midgrade gasoline was $2.54 a gallon while premium was $2.75.
The highest average price for regular gas in the contiguous U.S. was $2.78 in San Francisco. The lowest was $1.95 in Tulsa, Oklahoma.
The average price for diesel was $2.45, up three cents from two weeks ago.