Diesel prices rise sharply for second straight week   

Weekly retail on-highway U.S. diesel prices increased 6.6 cents to $3.066 per gallon from $3.000 in the prior week. In the last two weeks diesel prices are up 11.5 cents per gallon. Prices have been in a fairly tight range since early March with a low of $2.899 and a high of $3.131, which is better illustrated in our second graph. Diesel prices peaked at $4.764 per gallon in July of 2008 and were above $3 per gallon from September 24, 2007 to November 3, 2008. Prices in 2010 continue to fall between pricing levels of the prior two years, but with much lower volatility. That may be changing.