Mean annual temperature ranges from 45 to 53 degrees F, and mean annual precipitation from 28 to 38 inches. These are principally the Brems , Morocco , and Newton soils. The moderately well drained Brems, somewhat poorly drained Morocco, and poorly drained Newton soils form a drainage sequence with Plainfield soils. Since Plainfield soils have a wide geographic distribution, there are many other locally associated soils. Excessively drained and moderately well drained.
Surface runoff is slow to very rapid.
Permeability is rapid or very rapid. Many areas of Plainfield soils were cleared at one time and used for pasture or cropland, but much of it has now reverted to woods or is in poor pasture. Some areas are in pine plantings. In many places, these soils are irrigated and speciality crops are grown. Southern half of Wisconsin, Illinois, Indiana, Michigan, southeast Minnesota, New York, and Ohio.