You know Midwest summer has reached its peak when even the corn starts sweating. Why it matters: While not solely to blame for this month's dangerous heat and humidity, the viral weather phenomenon isn't helping the situation.

A phenomenon called "corn sweat" could exacerbate the impacts of the extreme heat blanketing a large portion of the U.S., according to experts.

The combination of corn sweat, the exhalation of water vapor through leaves, and a heat dome is bringing dangerously hot conditions to millions of people.