
Another weekly decrease in diesel prices across the U.S. has fuel at its lowest price since 2017, according to the latest numbers from the Department of Energy.
A 1.1-cent decrease during the week ending Jan. 21 has the U.S.’ average price for a gallon of on-highway diesel at $2.965. The last time prices were lower was Christmas Day 2017 when the national average was $2.903.
During the most recent week, prices fell in all regions except the Gulf Coast, which saw a two-tenths of a cent increase. The largest decrease during the week was seen in the Rocky Mountain region, which saw a 4.3-cent decrease.
The nation’s most expensive diesel can be found in California at $3.739 per gallon, followed by the Central Atlantic region at $3.215 per gallon.
The cheapest fuel can be found in the Gulf Coast region at $2.79 per gallon, followed by the Midwest region at $2.807 per gallon.
Prices in other regions, according to DOE, are:
- New England – $3.191
- Lower Atlantic – $2.884
- Rocky Mountain – $2.944
- West Coast less California – $3.115







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