Despite the first upturn since November in average diesel prices this week, expect prices to move slightly lower at least for a while longer, according to the U.S. Energy Department and its latest Short-Term Energy Outlook released on Wednesday. It has lowered is forecast for the average cost of on-highway diesel this year to $2.83 per gallon, down 2 cents from last month’s report and is in sharp contract to last year’s average of $3.83.
