National gas prices rise nearly 5 cents in 2 weeks

The average price of regular gasoline in the United States has climbed nearly five cents over a two-week period to $2.76.

That's according to the national Lundberg Survey of fuel prices released Sunday.

Analyst Trilby Lundberg says the average price for a gallon of mid-grade was $2.91. Premium was at $3.02.

Charleston, S.C., had …