The average U.S. price of regular-grade gasoline shot up 7 cents a gallon over the past two weeks to $2.66.
Industry analyst Trilby Lundberg said Sunday the increase was driven primarily by rising crude oil prices.
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Lundberg says she expects prices to continue to rise over the next few weeks.
The increase brings the price of gas to 32 cents a gallon higher than it was at this time last year.
The highest average price in the contiguous 48 states was $3.54 in the San Francisco Bay area. The lowest was $2.22 in St. Louis.
The average price for diesel fuel rose a penny, to $3.01.