
Farm Progress reports that grain futures were posting small losses after a volatile week, while the National Weather Service said a La Nina was likely to develop this winter. The commentary notes the event is unlikely to last into the US growing season but is associated with flood damage to Argentina's wheat crop.
A likely La Nina raises the risk of dryness in Argentina and southern Brazil, which could reduce South American soybean and corn supplies and support prices. The immediate US effect is modest because the event is expected to fade before the US season.
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.
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 324 past neutral weather events, SOY moved a median +0.0% over 5 sessions (52% higher; middle half -1.4% to +1.7%), and +0.7% 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.