U.S. grain markets moved sharply lower Wednesday, Sept. 23, with December corn falling nearly 8 cents per bushel as soybean and wheat futures also declined. The move came as traders assessed U.S.-China trade developments, a stronger U.S. dollar and fresh export demand reported by USDA. For U.S. farmers and agribusinesses, the decline matters because commodity prices are entering a sensitive period for marketing decisions, harvest revenue, crop insurance calculations and 2027 production planning.

As of 9:16 a.m. CT, December corn was down 7¾ cents at $5.29 per bushel, while November soybeans declined 11¾ cents to $13.13¾. December CBOT wheat dropped 11¼ cents to $7.06 per bushel. Kansas City December wheat was down 13¾ cents at $7.67½, while Minneapolis December wheat declined 9½ cents to $7.26¾. The broad weakness across grain futures highlighted a cautious trading environment as producers and commercial buyers monitor both export demand and macroeconomic signals.

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USDA Reports New U.S. Corn Sale to Mexico

Despite weaker futures, USDA provided a positive export signal Wednesday morning by announcing a sale of 100,000 metric tons of U.S. corn to Mexico for the 2026/27 marketing year. Mexico remains a critical destination for U.S. agricultural exports, making new purchases particularly relevant as farmers evaluate demand during harvest. Strong export activity can provide underlying support for corn prices, although traders are balancing those sales against currency movements, global grain supplies and uncertainty surrounding international trade flows.

Market attention is also centered on relations between Washington and Beijing. Traders are monitoring signals surrounding an expected meeting between President Donald Trump and Chinese President Xi Jinping, particularly for any developments that could influence agricultural trade. China's soybean purchasing strategy remains especially important for U.S. producers because shifts in Chinese demand can quickly affect soybean futures, basis levels and the broader agricultural supply chain during the marketing year.

Another factor influencing commodity prices is the U.S. Dollar Index, which recently reached its highest level since July. A stronger dollar can make U.S. agricultural commodities more expensive for international buyers and potentially reduce the competitiveness of American grain exports. Producers will therefore be watching currency markets alongside USDA export sales and China-related headlines as they make marketing decisions and evaluate margins amid persistent input costs and uncertainty across global agricultural markets.

Cattle Futures Rise While Hogs Move Lower

Livestock markets were mixed Wednesday morning. November feeder cattle gained $3.13 to $326.33 per cwt, while December live cattle advanced $2.13 to $221.58 per cwt. December lean hog futures, meanwhile, declined 55 cents to $70.45 per cwt. The divergence between cattle and hogs adds another layer to the agricultural outlook, particularly for livestock producers facing volatile feed costs, tight margins and changing consumer demand across the U.S. meat supply chain.

Outside agriculture, November crude oil climbed $1.45 to $91.97 per barrel, while the December U.S. Dollar Index reached 100.74. Major equity markets were also lower, with the S&P 500 and Dow Jones Industrial Average declining during morning trade. For U.S. agriculture, the combination of softer grain prices, a stronger dollar and uncertainty over China means export demand will remain a key market driver, with USDA sales and trade developments likely to influence commodity prices in the sessions ahead.