The GasBuddy national average gas price fell -0.6 cents to $3.03 last week. This is down -8.9 cents from a month ago and -36.7 cents below a year ago. The median U.S. gas price is $2.89 per gallon, unchanged from last week and about -14 cents lower than the national average. The national average price of diesel has decreased -2.1 cents in the last week and stands at $3.608.