U.S. soy futures dropped on forecasts for rain that is expected to bolster the health of a crop stressed by adverse weather throughout planting and early development. The improving weather view also weighed on soybean futures as traders used it as an excuse to lock in profits from recent rallies. CBOT soybean futures for July delivery ended down 10-1/2 cents at $3.77-1/4 a bushel. CBOT July soybean futures dropped 10-1/4 cents to $9.31-1/4 a bushel.