The anthropogenic increase in radiatively active gases in the atmosphere has been well documented, and there is evidence that suggests an impact of this increase on the earth's climate. Agriculture is vulnerable to climatic changes, and estimating the likely response to such changes is critical. The current work examines the impact of climate change on water stress during the critical periods of soybean [Glycine max (L.) merr.] reproductive development. This is a time of particular interest because soybeans at these stages are believed to be particularly vulnerable to water stress. Climate scenarios from three General Circulation Models (GCMs) were adapted to produce daily, simulated weather datasets for the nine climate centroids [...]