By late century, annual average temperatures in the Southern Great Plains are projected to increase by 4.4°–8.4°F.

All climate models agree that temperatures are projected to increase over the 21st century across the Southern Great Plains, with almost uniform temperature increases across the entire region. Summer shows the largest amount of warming, with a localized maximum in western Kansas. Springtime warming is generally smaller than other seasons, with the largest increases occuring in southwest Texas.