NOAA's Climate Prediction Center issued an ENSO update on 9 October 2025 maintaining a La Niña Advisory. La Niña is expected to persist through December 2025 to February 2026, with a 55% chance of transition to neutral in January-March 2026, and is expected to remain weak.
A weak La Niña typically raises drought risk for South American crops and dryness in US southern plains, which can tighten soybean, corn and wheat supplies and support feed grain prices, though the effect is usually modest if the episode stays weak.
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.
After 224 past neutral weather events, Wheat (SRW) 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.