These data were compiled to assess potential changes in the climatic suitability for 66 species (dominant and associate plant species) within major plant communities in the southwestern United States. An objective of our study was that species within plant communities have unique climate suitability signatures and forecast changes in climatic suitability will not be uniform within the species respective communities or among species within the community. We developed these spatial models of climate suitability under a modern baseline (1960-90) and future climate scenario (2041-2060) using Maxent and WorldClim temperature and precipitation variables. Plant species were chosen that are characteristic species of plant communities in the southwest as mapped by GAP/LANDFIRE National Terrestrial Ecosystems v1 (USGS-Core Science Analytics, Synthesis, and Library – Gap Analysis Project, 2011). Monthly average minimum and maximum temperature and monthly total precipitation values were acquired from WorldClim v1.4 for current climate conditions and Community Climate System Model 4.0 (CCSM4, Gent et al. 2011) representative concentration pathway (rcp) models, 4.5 and 8.5, for the future climate scenario.