For a fourth consecutive week, the national average retail price of a gallon of diesel fell this week, according to the U.S. Energy Information Administration. The national price dipped less than 1 cent to $2.931 in the latest week.
The price is 28.4 cents higher than a year ago.
All regions reported lower prices except the Rocky Mountain area and West Coast, which reported increases of less than a penny. The Gulf Coast fell 1.2 cents to $2.876 to remain the cheapest area for diesel. California remained the most expensive in the U.S. at $3.145 a gallon.
For state-by-state diesel prices, updated daily, click here.