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The Weather Channel

What is ‘corn sweat’ and how does it make heat waves worse?

The Weather Channel · New
The Weather Channel
The Weather Channel
New

As temperatures heat up across the Midwest, a phenomenon known as ‘corn sweat’ can make the heat feel even worse. Through a process called evapotranspiration, the leaves of the plant release moisture back into the atmosphere.

Breakdown
  • Corn plants release water vapor through evapotranspiration, a process similar to breathing. 12s
  • An acre of corn can emit 3,000 to 4,000 gallons of water per day. 25s
  • This moisture increases local humidity and raises the 'feels like' temperature. 28s
  • The effect is especially strong in regions with high corn density, such as the Midwest. 36s
Rural & AgricultureWeather