The CBOT was sharply higher on Wednesday with the July grain contracts officially rolling off the board. Twenty-six contracts of July corn were traded this afternoon and the market rose 6 cents before its expiration. July soybeans traded 29 contracts and settled 29¾ cents higher before expiring. The strength of July futures during their delivery month highlights the strength of the underlying cash markets and should serve to guide deferred futures going forward.   The ongoing Canadian and U.S. PNW/northern Plains drought continues to support the CBOT trade with nearly every major market trading higher on Wednesday. Afternoon weather models show decreasing rains for the central U.S. in the coming weeks, with no change in th...