The U.S. average retail price of regular gasoline fell almost six cents this week to reach $3.23 per gallon. The average price is $0.25 per gallon higher than last year at this time. The Rocky Mountain region led the way, with the retail price plunging almost a dime compared to last week. The average price in the Midwest was eight cents lower than last week. The West Coast gasoline average registered a decline of six cents; however, the price in the region remained the highest in the country at $3.49 per gallon. The Gulf Coast declined about five cents on the week to the lowest regional average price at $3.04 per gallon. Rounding out the regions, gasoline sold for an average of three and a half cents less on the East Coast this week compared to last week.

The national average diesel price fell for the fourth straight week, shedding almost seven cents to hit $3.83 per gallon. The diesel price is $0.58 per gallon higher than last year at this time. This was the biggest weekly decrease in the average diesel price since May 2010. Diesel prices were down across all the regions with the largest decrease occurring in the Midwest, where the diesel price tumbled more than eight cents below last week's average. The Rocky Mountain average diesel price dropped almost eight cents. The West Coast and Gulf Coast average prices both were down almost seven cents. The East Coast diesel average held the most ground as the price in the region moved down about four cents versus last week.