One way to judge the cost/benefit is to estimate drying costs and dividing that cost into the local price of corn to give you an idea of the percent corn loss you could withstand by waiting and harvesting later
Hot and dry cornfield conditions are breeding grounds for dangerous aspergillus ear and kernel mold that produces aflatoxins. This toxin is a carcinogen, can harm livestock and can lead to rejection at the elevator.
Farmers in Texas and other areas experiencing drought are in dire need of hay supplies and dryland crops are burning up. Because of this, grain farmers are abandoning their grain crops and baling them for cattle feed.