The national average diesel fuel price continues to decline according to the Gasoline and Diesel Fuel Update released by the EIA. The report showed the national average diesel fuel price decreased two cents from last week to $3.96 per gallon. The average price in both the Midwest and Rocky Mountain regions declined by two cents to $3.44 per gallon and $3.95 per gallon respectively. The East Coast also had a two cent decrease, but at $4.07 per gallon continues to have the highest average diesel fuel price in the nation. The average price of diesel fuel is now $3.98 per gallon on the West Coast and $3.79 per gallon on the Gulf Coast, only down a penny from last week for both region.