Storms damaged corn fields in Rio Grande do Sul, while planting neared completion in Paraná and Santa Catarina; excess moisture, low sunlight, and strong winds also affected crop development in parts of those states. Trading remained slow, Brazilian exports were running behind last year’s pace, and abundant domestic supply relative to demand reinforced buyer caution; Mato Grosso do Sul’s average corn price fell 6.57% in October.
Weather damage in southern Brazil could tighten local availability, but ample supply and slower exports are weighing on demand and prices more broadly. The market picture is mixed, with localized crop risks offset by supply pressure.
After 357 past bearish weather events, Corn moved a median -0.3% over 5 sessions (44% higher; middle half -2.2% to +1.3%), and -0.5% 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.