The average price for a gallon of diesel increased 3.1 cents during the week ending July 2, according to the Energy Information Administration-a volatile break from last week's 4.8-cent drop. The price is 55 cents higher than a year ago.
The largest increase came in the Midwest, where prices went up 6.8 cents to $2.887. California, which has the highest prices in the nation, declined the most-- 2.1 cents to $3.119. The cheapest diesel was in the Lower Atlantic at $2.834, despite a 1.8-cent increase.