Diesel jumped 6.3 cents to $2.991 a gallon, its biggest jump in four months, the Department of Energy said in a weekly price survey.
Diesel will average just under $3 a gallon this year but will climb to more than that level in 2011, according to the DOE.
Trucking’s main fuel will average $2.97 this year and $3.14 next year, DOE said. It averaged $2.46 a gallon last year. Gasoline will average $2.80 a gallon this summer, which is 36 cents more than last summer’s price.
DOE said crude will average $80 a barrel in the second half of this year before rising to $85 in 2011.