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A dangerous early July heat wave is forecast to stress U.S. corn and soybean crops across the Midwest, northern Plains, Great Lakes and eastern U.S. Forecasters also flagged ridge-riding storm complexes with derecho risk, while the crops are entering a critical yield development period.
Heat stress during pollination and yield formation can cut yields and lift corn and soybean prices. Storm damage risk adds upside pressure if losses materialize.
farms.comFarms.comJul 1, 2026After 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.
After 1,079 past bullish weather events, Soybeans moved a median +0.3% over 5 sessions (54% higher; middle half -1.4% to +2.0%), 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.
Forecast early-July heat wave over the Midwest during critical yield development adds weather risk premium supporting the rally.
