As of October 8, 2026, the latest cited market snapshot is a rally on October 6: December corn settled at $5.08 per bushel, November soybeans at $13.03, and December soft red winter wheat at $7.04¼. The University of Illinois Extension report also said national corn and soybean harvest progress trailed five-year averages, with weather delays in Iowa. The October 2026 USDA supply-and-demand report was still upcoming, scheduled for October 9 at noon Eastern.
Why are grain futures moving?
Grain futures respond to several influences at once: expected crop supply, the pace of harvest, weather, demand, and broader macroeconomic or geopolitical developments. A price move on a given day does not, by itself, identify which factor caused it. USDA cautions in its publication description for Price Reaction after Crop Reports that prices may reflect information beyond NASS reports and are ultimately determined by supply and demand.
The October 6 market snapshot
University of Illinois Extension’s October 6, 2026 Closing Market Report described a rally across corn, soybeans, and wheat. It reported these settlements for that date:
| Contract | October 6 settlement | Change that day |
|---|---|---|
| December corn | $5.08 per bushel | Up 10¾ cents |
| November soybeans | $13.03 per bushel | Up 22¼ cents |
| December soft red winter wheat | $7.04¼ per bushel | Up 12 cents |
These are reported settlements for October 6, not live prices or a description of trading on October 8. The report is available from University of Illinois Extension.
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Why longer-period performance is different
CME Group’s September 2026 update reported August monthly returns of 17.91% for Chicago wheat, 15.82% for corn, and 8.40% for soybeans, calculated from rolling front-month futures. CME discussed geopolitical tensions alongside crop estimates, domestic crush, export purchases, ethanol, and biofuel policy. Those returns describe August, not October, and do not establish why prices moved on October 6. They are also a different measure from a single contract’s settlement and daily change. See CME Group’s September 2026 update.
How is weather affecting the corn and soybean harvest?
The October 6 Illinois Extension report summarized USDA crop-progress data as showing corn and soybean harvest progress behind national five-year averages, with significant weather-related delays in Iowa. The retrieved report text did not provide exact percentages, so a specific share harvested cannot be stated here. Nor does this summary establish local precipitation totals or a complete account of conditions across the Corn Belt.
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Separate harvest pace from crop condition
Harvest progress measures how much of a crop’s seasonal work—such as harvesting—has been completed. Crop condition is a separate assessment. A slow harvest does not, on its own, tell a reader that crop quality or yield has changed; weather can delay fieldwork without proving a particular change in the crop outlook.
Use the right USDA report for the question
USDA/NASS issues Crop Progress weekly during the April–November growing season, reporting planting, development, harvest progress, and overall crop condition by crop and state. Its publication catalog listed the October 5, 2026 report as the latest release at the October 8 reference date: USDA/NASS publications.
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For weather context, USDA’s Weekly Weather and Crop Bulletin provides national and state summaries along with current temperature and precipitation information. The catalog listed an October 6, 2026 issue: USDA/NASS publication catalog. A weather observation describes conditions already recorded; a forecast describes expected conditions. Neither should be presented as the other.
Read crop-progress maps with care
USDA/NASS says its gridded crop-progress layers are fully synthetic representations of confidential county-level data, with an archive covering growing-season weeks from 2015 onward. They can provide modeled spatial context, but they are not raw county-level observations. See NASS Crop Progress Gridded Layers documentation.
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What could the next USDA release clarify?
USDA’s October 2026 World Agricultural Supply and Demand Estimates (WASDE) report was scheduled for October 9 at 12:00 p.m. Eastern—one day after the October 8 reference date. Its figures were therefore not yet available as of October 8.
WASDE is a monthly report of annual supply-and-use forecasts for U.S. and world wheat, rice, coarse grains, and oilseeds, among other commodities. It can update the balance-sheet context traders use to assess supply and demand, but it is a forecast report, not a record of a single day’s harvest or weather. The schedule and report scope are described by USDA’s World Agricultural Outlook Board.
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How to interpret the numbers without mixing them up
- Settlement versus return: The October 6 contract settlements and daily changes are point-in-time market figures. CME’s August percentages are monthly returns for rolling front-month futures. They cover different periods and measures.
- Observation versus forecast: Crop Progress and weather summaries report conditions or progress available for their stated reporting periods. WASDE provides supply-and-use forecasts; a weather forecast concerns future conditions.
- Progress versus condition: Harvest pace and crop condition answer different questions. A delay does not establish a yield or quality outcome.
- Data versus interpretation: A report supplies observations or estimates; explanations of how those figures relate to prices are analysis, not proof that one release or weather event caused a market move.
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