Grain markets seem to be stuck in Groundhog Day For the month of April, Minneapolis wheat for July and September was up 22%, July corn was up 23%, and December corn was up 18%. Both July and November soybeans were up 7%, making April the 11th straight higher monthly close for soybeans. All of the grains are hovering around eight-year highs. Written By: Randy Martinson | × Erin Ehnle Brown / Grand Vale Creative LLC The rally in the grains continues with all of the grains gapping higher to start the new month. New highs were established in Minneapolis wheat and old crop corn, while the winter wheat exchanges, soybeans, and new crop corn fell short of hitting their previous contract highs.