Heavy rainfall is delaying corn and soybean harvest activity across parts of the U.S. Midwest on Tuesday, September 22, while persistent drought continues to pressure winter wheat planting and livestock pastures farther south and west, according to USDA agricultural weather data.The sharp regional contrast matters as U.S. farmers enter a critical fall window when field conditions can influence harvest speed, crop quality, input costs and ultimately expectations for commodity supplies and prices.
Across the Corn Belt, cool and mostly cloudy conditions are slowing evaporation after heavy rainfall left portions of the region unusually wet. Additional rain developed Tuesday across eastern Iowa, northern Illinois and southern Wisconsin, further limiting opportunities for producers waiting to resume fieldwork. As of September 20, topsoil moisture was rated 38% surplus in Ohio and 28% surplus in Iowa, according to USDA data, underscoring how rapidly field conditions have shifted in some major corn and soybean areas.
The situation is particularly notable in Iowa, the nation’s leading corn-producing state and one of its largest soybean producers. Des Moines has received more than 12 inches of rain so far in September, according to the September 22 Agricultural Weather Highlights prepared by USDA agricultural meteorologist Brad Rippey. Saturated soils do not automatically imply crop losses, but they can restrict machinery access, slow harvest progress and increase concerns about lodging, grain moisture and field losses if wet conditions persist.