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The Impact Of ‘Corn Sweat’ On Heat Waves - Videos from The Weather Channel

The Impact Of ‘Corn Sweat’ On Heat Waves

August 8, 2025

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. The more corn, the more ‘sweat’ or moisture - sending humidity and feels-like temperatures soaring locally. Learn more about the phenomenon here.