Mark Twain used to tell the story that it was once so hot that he saw cows standing in a field just freeze to death...
See, most farmers know that cows are just plain dumb and stupid. He was once standing next to a pasture containing several cows. The pasture was located near a field of Indiana popping corn. It became so hot during the day that the corn on the stalks began to cook in their husks, which then burst open due to the micro-explosions of popping corn. A breeze carried the popped kernels across the fields and above the cow pasture.
The dumb cows looked up at the drifting corn. The apparently thought it was snow and stood in their tracks and froze to death.
That's how hot it was. That cows froze to death.