
US corn futures rose 4.1% on May 30, 2019, and wheat and soybeans also gained strongly. Corn prices were at their highest in nearly three years, but Midwest planting was historically slow.
Excess moisture in the southern Plains also threatened the coming wheat harvest.
Delayed planting threatens yields for both corn and soybeans, and farmers may be discouraged from seeding at current prices, which tightens expected supply. Wet conditions in the southern Plains add upward pressure on wheat, so buyers of feed grains should expect firmer prices.
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, SOY moved a median +0.3% over 5 sessions (54% higher; middle half -1.4% to +2.0%), and +0.9% over 20.
After 1,072 past bullish weather events, WHEAT moved a median +0.2% over 5 sessions (55% higher; middle half -1.4% to +2.3%), and +0.3% 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.