
Iowa State's crop update reports drought expanding across Iowa, with August 2020 among the driest Augusts since 1893 statewide and the southeast seeing its driest August in 128 years. Corn and soybeans are maturing quickly, with stalk quality declining and early disease issues such as tar spot appearing.
Drought-driven yield losses and quality problems in Iowa, the top corn state, point to lower feed grain and soybean meal supply, supporting 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, Soybeans moved a median +0.3% over 5 sessions (54% higher; middle half -1.4% to +2.0%), and +0.9% 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.