The GasBuddy national average price of gas fell -3.5 cents to $3.04 last week. This is down -1.4 cents from a month ago and -10.3 cents lower than a year ago. The median gas price of $2.94 is down -5 cents and is -10 cents below the average. The national average price of diesel has decreased -2.4 cents in the last week and stands at $3.626 per gallon.