
The US Climate Prediction Center gives La Niña a 65% chance of developing in July-September. Capital Economics says geographically concentrated crops make global wheat and corn prices less likely to be affected by either phase.
La Niña is seen as supportive for South African maize, Indian sugarcane and wheat, and Australian crops due to higher rainfall.
Because global wheat and corn output is spread across regions, ENSO shifts are unlikely to move those prices much on their own. Localized benefits for maize in South Africa and wheat in India and Australia may ease supply concerns there.
After 445 past neutral weather events, CORN moved a median +0.1% over 5 sessions (52% higher; middle half -1.4% to +1.6%), and +0.7% over 20.
After 224 past neutral weather events, WHEAT moved a median -0.1% over 5 sessions (46% higher; middle half -1.4% to +1.5%), and +0.4% 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.