
Iowa State Extension field agronomists reported moisture stress in the western counties and excess moisture in the east for the week of June 22-30, 2020. Corn was mostly at V10 to V12 and looking good, and soybeans were flowering, with off-site herbicide injury also reported.
Mixed regional conditions with dryness in the west are a modest concern for yield prospects, but the crop still looks reasonable, so the price impact is limited.
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, Soybeans 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.