The IRI's September 2024 ENSO update says neutral conditions persist, but early signs of La Niña are appearing. Its model gives equal odds to La Niña and neutral for September-November, while the official CPC outlook gives La Niña 71%.
Borderline La Niña is forecast for October-December.
The gap between the forecasts keeps uncertainty high for South American crop risk. Traders may price in some weather premium, but a confirmed event would matter more for soy and corn.
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.