The mean annual temperature ranges from 50 to 52 degrees F. Mean annual precipitation ranges from 35 to 38 inches. These are the Bowes , Waupecan , Lafayette , and Mahalasville soils. The somewhat poorly drained Lafayette soils are on toe slopes and in slight depressions. The very poorly drained Mahalasville soils are in drainageways and depressions. Where Mahalasville soils are mapped in association with Longlois soils, they have gravelly substrata.
Surface runoff is medium.
Permeability is moderate in the subsoil and very rapid in the underlying material. Most areas are used to grow corn and soybeans. Winter wheat is the principal small grain. Native vegetation was predominantly prairie grasses with mixed hardwood trees and shrubs. The Longlois series is of small extent.