The price of diesel fell in nine of EIA’s 10 regions, with the only increase coming in the Gulf Coast, with an uptick of a half-cent.
The biggest drop was seen in California, where the price dropped 11.8 cents a gallon, but it remains the only region above $5 at $5.047.
Diesel is now $1.039 a gallon cheaper than a year ago.
The national average price for gasoline saw a significant jump of 7.6 cents a gallon to $3.497 a gallon, still 67.3 cents a gallon cheaper than a year ago.