A USDA deputy chief meteorologist says a weak La Niña has produced better-than-expected growing conditions in South America. Argentina's dry start was offset by recent rains, and Brazil's corn and soybean prospects are good so far.
USDA FAS projects a slightly smaller 2017 Argentine soybean crop and a bumper corn crop.
A large Southern Hemisphere harvest would add export supply to the market and put downward pressure on US soybean and corn prices, especially once South American exports ramp up in spring.
After 363 past bearish weather events, Soybeans moved a median -0.6% over 5 sessions (42% higher; middle half -2.5% to +1.1%), and -0.2% over 20.
After 357 past bearish weather events, Corn moved a median -0.3% over 5 sessions (44% higher; middle half -2.2% to +1.3%), and -0.5% over 20.
After 118 past bearish weather events, Soybean Meal moved a median -0.8% over 5 sessions (35% higher; middle half -3.2% to +0.4%), and -1.6% 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.