The national average retail diesel price climbed for the eight consecutive week, climbing 6.3 cents to $4.089 a gallon during the week ended Monday, Aug. 27, according to the U.S. Department of Energy’s Energy Information Administration.

During 12 straight weekly declines from April 16 through July 2, the price of diesel had dropped 49.9 cents a gallon; since that time, the price has climbed 44.1 cents. Last week, the price surpassed the $4 mark for the first time since May 14. This week’s price is 26.9 cents above the same week last year.

Average retail prices rose in all regions, led by a 10.4-cent increase to $4.288 on the West Coast, not including California. The most expensive diesel on average was $4.409 a gallon in California, where prices rose 9.6 cents. The least expensive diesel on average was $3.981 a gallon on the Gulf Coast, where prices climbed 7 cents.

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