Lila said, "they might not like our long, hot, humid summers.
Egyptian Walking onions like my 110' where I live. I only have about 6 in two hanging pots as an experiment. All that is left after something ate them after 4 years.
Egyptian Walking onions were very drought resistant for me.
I am probable 4 hours west of where you live based on your description. I am right on the border of West Texas and in the Hill Country.