The U.S. average retail price of regular gasoline increased 5.1 cents this week to reach $3.92 per gallon, 32 cents per gallon higher than last year at this time. The Rocky Mountain region price increased over six cents, the largest increase in the Nation for the fourth consecutive week, to put the price at $3.69 per gallon. The next largest increase came on the Gulf Coast, where the price increased six cents to $3.76 per gallon. The East Coast and Midwest prices both increased 5.9 cents and are now $3.87 per gallon and $3.90 per gallon, respectively. The smallest increase came on the West Coast where the price increased about a penny to put the price at $4.24 per gallon.

The national average diesel fuel price increased 0.5 cent to $4.15 per gallon, 22 cents per gallon higher than last year at this time. The largest increase came in the Rocky Mountains, where the price increased about two cents to reach $4.14 per gallon. On the Gulf Coast the diesel price is now $4.06 per gallon which was the peak price for that region in 2011. The West Coast price increased less than a penny and remains $4.43 per gallon. Rounding out the regions, the East Coast and Midwest prices both increased 0.6 cent to reach $4.19 per gallon and $4.06 per gallon, respectively.