The average price of diesel dropped to $3.923 a gallon for the week ended Dec. 24 — a 2 cent drop from the previous week.
The national average price of a gallon of diesel has dropped below $4 for the first time since an 11.5-cent jump followed by a 6.1 in consecutive weeks in August.
The national average retail diesel price rose 3.5 cents a gallon during the week ended July 9, ending a 12-week streak of price decreases.
The national average retail diesel price fell 5.1 cents to $3.678 a gallon during the week ended Monday, June 25.
The national average retail diesel price fell 5.2 cents to $3.729 a gallon during the week ended June 11.
For the first time since 2009, the average diesel price is lower than it was during the same week the year before.
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