Published: Aug 09, 2012 4:34 PM EDT
Updated: Aug 10, 2012 6:31 AM EDT

Price for corn, wheat and soybeans are settling higher again with no relief in sight from the drought blanketing farming states.

December corn rose 7.25 cents to $8.2375 a bushel Thursday. September wheat rose 13.75 cents to $9.13 a bushel and November soybeans rose 50 cents to $16.3125 a bushel.

A record-setting heat wave in July hit Plains states especially hard, new data show.

The weekly U.S. Drought Monitor map indicated that the amount of the contiguous U.S. affected by drought dropped a little more than 1 percentage point, to 78.14 percent.

But the area still gripped by extreme or exceptional drought rose to 24.14 percent, up nearly 2 percentage points from the previous week.

In other commodities trading, energy and metals prices edged higher.