The national average retail diesel price fell 6.5 cents to $3.781 a gallon – the lowest price in eight months – during the week ended Monday, June 11, according to the U.S. Department of Energy’s Energy Information Administration. The average price has fallen 36.7 cents in the past nine weeks and is 17.3 cents below the same week last year.

Average retail prices fell in all regions, led by a 12-cent decrease on the West Coast, which excludes California, where prices fell 10.3 cents but remained the nation’s most expensive at $4.066 a gallon, the only area of the country where diesel on average still costs more than $4. The smallest decrease was 4.6 cents in the Rocky Mountain region. The least expensive diesel was $3.696 a gallon in the Midwest.

Complete diesel price information is available on EIA’s Website.