September Chicago corn closed up 8.5 cents at 424.25 cents per bushel on updated forecasts for above-average temperatures and drier weather in the eastern Corn Belt. USDA export sales for old and new crop were strong, while Agroconsult raised Brazil's 2025/26 corn crop estimate and the IGC raised global 2026/27 production.
Dry U.S. forecasts and strong export pre-sales support corn, while larger Brazilian and global supplies cap gains. Feed users face mixed pressure from weather and supply.
After 1,465 past bullish weather events, CORN moved a median +0.2% over 5 sessions (54% higher; middle half -1.4% to +1.9%), 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.