The average price of self-serve regular gasoline was $2.82 a gallon on Friday, according to the latest Lundberg Survey. That's 5.23 cents higher than two weeks earlier.
The price of oil has risen as a weak economy and expectations of further action by the Federal Reserve drive the dollar down.
The highest average price in the continental U.S. was in San Francisco, at $3.16 a gallon. The lowest was $2.59, in St. Louis.