
Precipitation from September 11 to November 9 reached 10 to 15 inches across much of the western and northern Corn Belt, including nearly all of Iowa. Iowa's corn harvest was 72% complete by November 8, 17 points behind average, and Nebraska's was 74%, 10 points behind.
The season resembles the wet fall of 2018.
Harvest delays push grain movement later and can lower harvested quality, which supports nearby basis and spot prices. Yield losses from wet conditions are not yet confirmed, so the outlook stays uncertain.
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.
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.