The average price for a gallon of diesel fuel fell 3.9 cents across the country to $2.327, according to a U.S. Energy Information Administration report Dec. 29.
It was the smallest decline since September as crude oil prices hovered just under $40 for more than a week. As violence erupted in the Middle East, crude oil went from a low of $33.87 per barrel on Dec. 19 back up to more than $39 in afternoon trading Dec. 29 on the New York Mercantile Exchange.
Despite making the biggest drop, prices on the East Coast remained highest in the country at $2.423 per gallon, down 4.6 cents from last week and down 97.6 cents from a year ago.
The lowest prices were in the Rocky Mountains, where a gallon of diesel averaged $2.25, down 2.2 cents from last week and down $1.019 from a year ago.
Prices on the West Coast made the smallest change, falling just one-tenth of a cent for the week to $2.273 per gallon, down $1.178 from a year ago.