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The average U.S. price of regular-grade gasoline jumped 4 cents a gallon over the past two weeks to $2.26.
Industry analyst Trilby Lundberg of the Lundberg Survey said Sunday that a rise in crude oil prices spurred the increase.
The price at the pump is 35 cents less than it was a year ago.
The highest average price in the nation is $3.34 a gallon in San Francisco. The lowest average is $1.81 in Houston.
The average price of diesel spiked 6 cents over the past two weeks to $2.58. The survey was conducted Friday.
