The national average price for on-highway diesel increased 1.4 cents to $2.817 per gallon for the week ending Monday, May 28.
The U.S. Energy Information Administration reported that a gallon of ultra-low sulfur diesel was up 1.4 cents from $2.822 to $2.836, while remaining supplies of low-sulfur diesel were up 1.2 cents from $2.740 to $2.752 per gallon.
The EIA gathers data from nine regions in the U.S. for prices of ULSD. Eight of the regions showed price increases during the past week.
The biggest increase was 2.8 cents per gallon in the Gulf Coast region, where ULSD prices went from an average of $2.754 to $2.782.
Bucking the trend, the Rocky Mountain region saw prices decrease 1.4 cents from an average of $3 even to $2.986 per gallon.
In California, ULSD rose 2 cents to $2.975 per gallon, while the West Coast region reported an average increase of 1.8 cents from $2.928 to $2.946.
The East Coast region saw a $2.820-per-gallon average price increase 1.3 cents to $2.833.
Average ULSD prices in the New England region increased four-tenths of a cent from $2.881 per gallon to $2.885.
ULSD prices increased 1.7 cents in the Lower Atlantic region from $2.782 to $2.799, while prices increased nine-tenths of a cent in the Central Atlantic region from $2.869 to $2.878.
The Midwest region had an average price of $2.802 per gallon of ULSD, up a penny from the previous week.