Across the Corn Belt, showers and thunderstorms are currently confined to the upper Great Lakes region. Elsewhere, dry weather favors summer crop maturation. By September 12, more than one-third (37%) of the U.S. corn was fully mature, while 38% of the soybeans were dropping leaves, versus respective 5-year averages of 31 and 29%.

On the Plains, scattered showers are occurring early Tuesday from South Dakota to Kansas, slowing fieldwork but locally improving soil moisture.

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