Growing season is the peak time for corn sweat, especially in the mid to late summer, according to the National Weather Service. Corn sweat contributes most to humidity during July and August.

Dangerous temperatures will persist across parts of the U.S. through July, and in some areas, there's an unexpected contributor.

The heat wave baking the central United States this week may feel worse than those earlier in the summer, and corn is partly to blame, forecasters say.