Weather Losses and Tighter Supply Turn Grain Sentiment More Bullish

Corn, soybean and wheat markets have shifted from a bearish outlook toward one with more upside risk after summer weather cut production on both sides of the Atlantic. Drought in Europe reduced EU wheat and corn output, while US growers faced drought in the western Midwest and flooding in the eastern Midwest. At the same time, demand for all three crops remains strong globally.

The supply squeeze shows up in August ending-stock estimates. US corn ending stocks for 2026-27 are pegged at 1.65 billion bushels, with a stocks-to-use ratio of 10.1%, the lowest in four years. Soybeans are estimated at 320 million bushels and 7%, and all-wheat at 717 million bushels and 38.3%. Stocks-to-use is ending stocks divided by total demand, so a lower ratio means less of a supply buffer relative to consumption.

The next major read is USDA's World Agricultural Supply and Demand Estimates report on Sept. 11. Traders will first compare yield numbers with expectations, then look at total supply, demand changes and ending stocks. If the report confirms lower production, the case for stronger winter grain prices grows.

What the Stocks-to-Use Numbers Reveal About Corn, Soybeans and Wheat

Why Corn and Soybeans Are Driving the Bullish Tone

Corn and soybeans are carrying the tightest supply cushions. Corn's projected stocks-to-use ratio of 10.1% is the lowest in four years, while soybeans at 7% leave little room for another production cut. Those ratios matter because they measure how much supply would remain relative to demand; a lower number gives buyers less protection against weather or export surprises.

Why the September 11 WASDE Report Is the Next Turning Point

The Sept. 11 USDA update will be judged first by whether yield estimates come in above or below trade expectations, then by changes to total supply, demand and ending stocks. If the report confirms damage from the western Midwest drought or the eastern Midwest flooding, corn and soybean ratios would likely tighten further, reinforcing higher prices. A surprise yield increase would weaken that bullish case.

Where Wheat Fits in the Price Outlook

Wheat's 38.3% stocks-to-use ratio is not as tight as corn's or soybeans', so the wheat story depends less on current US supply and more on further global crop losses. The European drought has already reduced EU wheat output, but the market would likely need another weather problem in major exporting regions to justify sharply higher wheat prices in December, January or February.

How Farmers and Grain Marketers Can Position for the Sept. 11 Report

The Sept. 11 USDA report is the immediate catalyst for grain marketing decisions. Specific numbers to watch:

  • Corn: The 10.1% stocks-to-use ratio is the lowest in four years. If the Sept. 11 yield estimate comes in below expectations, winter corn bids could improve sharply.
  • Soybeans: At 7% stocks-to-use, soybeans have little supply cushion. A further western Midwest drought confirmation could support rallies into December-February, so rushed selling before the report may leave upside on the table if yields are cut.
  • Wheat: With a 38.3% ratio, wheat has more buffer than corn and soybeans. Pricing decisions should reflect that a wheat rally depends more on additional global crop loss than on the current US balance.
  • Before Sept. 11: If you have unpriced bushels, decide in advance how much to sell if yields come in below or above trade expectations, so a surprise report does not force a rushed decision.