Here in Oklahoma we have heat very similar to yours. The heat is almost certainly what's keeping them from setting pods. If the plants look alright, I just keep them watered and hope that they survive in good enough condition to bear fruit in the fall.

If you can coax a new planting of bush beans along, it is good to get another planting started. I've planted in August and had a good crop of bush beans before our average October 23 frost.

Chris, another idea to consider for next year is to try something like Rattlesnake pole beans. They set pods in hotter temperatures than most pole beans.

George
Tahlequah, OK

Tepary beans are native to and are grown in the low desert of the southwest so that is one option. I would read through the descriptions of beans on internet seed vendors and look for the ones described as being heat & drought tolerant; Native Seed/Search is the best source. Probably any of the Hopi beans as they dry garden. Southern Exposure is another good source for warmer parts of the country. I came across a bush lima bean, Jackson Wonder with that in the description. Blue Coco is another one. Look into cowpeas and yardlong beans. I wouldn't rip out the polebeans, as soon as the temps come down they will start flowering and setting fruit, lots of them because the plants are big and have lots of foliage.