Grains and soybeans followed the overnight close by trading lower at the open. The early stretch just saw fractional declines but later in the morning, corn and soybeans took deeper dives. Volumes were modest to lower, except in cattle futures. Despite expectations that the current hotter, drier weather pattern will ding some quality in the crops, futures trading ironically focused on the present where there is a good start to the season.  The danger comes if the current heat and dryness become a longer-term pattern. If it is still hot and dry headed into next month, there will be a rush to add weather premium.  For the week, July corn is up 1.25 cents, July soybeans up a half-penny, November soybeans down 8 cents, and all three...