The national average retail price of a gallon of diesel declined for the third consecutive week, falling 1.2 cents to $2.622 for the week ending Monday, Sept. 21. The price — which has fallen 5.2 cents since hitting this year’s high of $2.674 three weeks ago on Aug. 31 — is $1.336 less than the same week last year, according to the U.S. Department of Energy.
All regions tracked by DOE saw price declines. The biggest decrease, 2.1 cents, was found in the Lower Atlantic, where prices fell to $2.578. The smallest decrease, 0.5 cent, was found in the Rocky Mountains, where prices slipped to $2.678.
The nation’s most expensive diesel by region, $2.783, was found on the West Coast, where prices fell 1.2 cents. The nation’s least expensive diesel by region, $2.542, was found on the Gulf Coast, where prices fell 1.3 cents.
California, which DOE tracks separately for its weekly update, saw a price decrease of 2.0 cents to $2.827; that price is $1.124 cheaper than last year. For state-by-state diesel prices, updated daily, click here.