
Illinois's 2025 growing season was marked by sharp weather contrasts, with a wet, delayed spring in the south and a dry north. Yields were very good but not record-setting, despite dry late-season conditions.
Some disease pressure was reported in places.
Solid Illinois yields add to a large US corn and soybean supply base, which tends to cap feed grain prices. The effect is modest because the results were good rather than exceptional.
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.
After 324 past neutral weather events, Soybeans moved a median +0.0% over 5 sessions (52% higher; middle half -1.4% to +1.7%), 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.