Corn harvest is winding down in northeastern South Dakota, with farmers reporting uneven yields after drought in many parts of the state. The USDA Crop Production Report forecasts South Dakota corn yields falling to 153 bushels per acre in 2026 from 171 in 2025.
Lower state yields tighten corn supply for feed buyers and add support to corn prices, especially as the broader WASDE report also shapes the outlook. The regional yield shortfall is a modest contributor to national supply tightness.
After 1,469 past bullish weather events, Corn moved a median +0.3% over 5 sessions (54% higher; middle half -1.4% to +1.8%), and +0.9% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.