Welcome to summer 2021! For weeks now, the CBOT has been trading as if it were summer and weather the paramount factor, but yesterday marked the true official start of summer for the northern hemisphere. If history is any gauge, this summer will feature ample volatility and WPI maintains a bullish outlook for the markets.  The CBOT opened weaker overnight after meaningful rains developed for Iowa, Illinois, and parts of Indiana over the weekend. The one-month forecast features rain and cooler temperatures for the major crop-growing regions, but confidence is low beyond two weeks and a switch to hot, dry weather is not unlikely. Bull spreading became a feature of the soybean and corn markets this afternoon with physical demand and expo...