The U.S. average retail price of regular gasoline increased more than seven cents this week to reach $3.79 per gallon. This marks the tenth increase in the last eleven weeks. The average price is 27 cents per gallon higher than last year at this time. The Rocky Mountain region led the way, with retail prices in the region jumping almost 14 cents compared to last week. This was the largest increase in that region since May 2008; however, average prices in the region remain the lowest in the country at $3.33 per gallon. The average price in the Midwest was 12 cents higher than last week. The West Coast saw its average gasoline price rise more than seven cents, and prices in the region remain the highest in the country, averaging $4.20 per gallon. The Gulf Coast saw an increase of about a nickel for the week. Rounding out the regions, prices on the East Coast were up about 3 cents over last week, the smallest regional increase.

The national average diesel fuel price rose more than four cents to hit $4.09 per gallon. The diesel price is 22 cents per gallon higher than last year at this time. Diesel prices were up across all regions, with the biggest increase coming in the Rocky Mountains, where prices were almost seven cents higher than last week's average. The Midwest saw its average diesel price increase six cents. West Coast prices climbed about a nickel over week's price, while the East Coast and Gulf Coast both registered increases of about three cents for the week.