Extreme temperatures have gripped the country's midsection and warnings are being issued about leaving kids in cars.

FOX News Radio's Jennifer Keiper has more:

It was a tough day at Target field - home of the Minnesota Twins, on Monday... as baseball fans braved temperatures over one hundred degrees on Monday to cheer their team on.

Listen to some of those fearless fans, HERE:

It was so hot, officials say 50 people were treated for heat-related illness at the game.