Corn futures on the Chicago Board of Trade closed higher, supported by surging U.S. wheat futures and a softening dollar. CBOT July corn settled up 3 cents at $3.59-3/4 per bushel, with new-crop December up 3-3/4 cents at $3.80. Forecasts called for warmer temperatures in the Midwest after the Fourth of July holiday, but rains in the next seven days should recharge soil moisture in central and southern portions of the crop belt. USDA reported export sales of U.S. corn in the latest week at 384,500 tonnes (old and new crop years combined).