CEDAR RAPIDS, Iowa (KCRG) - Say it with me: Evapotranspiration. This is the combination of evaporation and transpiration.
The corn crop (all plants, actually) will transpire moisture into the atmosphere and does so especially in late June, July and August. Did you know that an acre of corn is capable of transpiring several thousand gallons of water in just one day? The dew points will rise measurably when the crop is actively transpiring like this. One of the reasons our weather is usually so muggy this time of year is due to our actively transpiring crops. We could not rule out a localized 80-degree dew point today.