Washington, DC, Aug. 26, 2013 -- The average price of a gallon of gasoline in the U.S. has fallen 4 cents over the past two weeks and 20 cents over the last year, according to the Lundberg Survey.
The survey reports that a gallon of regular now costs and average $3.56. Midgrade costs an average of $3.74 and premium is $3.88.
Prices vary considerably across the country, however. Charleston, S.C. has the lowest average price for regular at $3.22. The Long Islandregion has the highest at $3.82.