The EIA reported in the Gasoline & Diesel Fuel Update that the national average diesel fuel price was unchanged from last week, remaining at $3.90 per gallon. Both the Midwest and West Coast prices increased one cent to $3.87 per gallon in the Midwest, and $4.06 per gallon on the West Coast. The average price per gallon of diesel fuel on the East Coast rose less than a penny from last week to remain at $3.91 per gallon. The Rocky Mountain price decreased one cent to $3.92 per gallon. Decreasing less than one cent, the average diesel fuel price on the Gulf Coast remained at $3.82 per gallon.