The national average price of gasoline in the US fell -3.4 cents last week to $3.10. This is up 1.8 cents from a month ago but down -54.6 cents from a year ago. The national average price of diesel has decreased -2.7 cents in the last week and stands at $3.519 per gallon. The median U.S. gas price is $2.96 per gallon, down -3 cents from last week and about -14 cents lower than the national average.