Searing heat in the Heartland: Oklahoma’s hottest day ever?

July proved to be historically scorching from the eastern Rockies to the mid-Atlantic. Indianapolis, Louisville, St. Louis, Denver and Roanoke (Va.) had their hottest Julys on record. Chicago, Minneapolis, Richmond, and Washington, D.C. are among cities that had their second hottest Julys. But, in recent days, some of the most impressive heat has focused on the Sooner state.