Although this bull market has been driven at least in part by speculative money from noncommercial traders, it could not have survived as long and as strong as it has without some sort of fundamental support. One element of that is weather.It was interesting to discover this morning that the July corn futures contract had posted a new high price of $4.15 in overnight trading, although it seemed to have traded below yesterday’s close much of the time. Meanwhile, July soybeans traded at $11.0975, which is the highest price on the continuous chart since September 2014. After the day session began, it did not take long for July soybeans to obliterate the high set a few hours earlier. At this writing, they are up $0.30 at $11.2975, having set a...