Brazil has gone weeks without meaningful rain, and farmers and traders are concerned about the 2017/18 crop year in the coffee, sugarcane, corn and soybean region. Forecasters expect showers to begin in late September and increase through October.
Persistent dryness raises the risk of delayed planting for Brazil's double-crop soybean and corn, which tightens expectations for export supplies and supports prices if rains stay late.
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.
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.