
Cool weather in the Corn Belt has slowed corn and soybean crop maturity, with weekly temperatures at least 5°F below normal in parts of the upper Midwest. Hurricane Harvey brought 10 to 30 inches of rain to southeast Texas and Louisiana.
Delayed maturity raises frost risk and lengthens the window for yield losses before harvest, a modest bullish factor for corn and soybeans.
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.
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.