University of Missouri Extension warned that drought stress and high nighttime temperatures during tasseling and silking can cause significant corn yield losses. About 21% of Missouri corn was in silking on July 6, and dryness was concentrated in the southwest of the state.
NOAA issued a drought early warning for the Missouri River Basin and much of the Midwest.
Yield risk during pollination is a bullish factor for corn prices if dry weather spreads across the Corn Belt. The impact depends on whether rainfall returns in the coming weeks.
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.
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.