Nebraska isn't humid.
Humid is Washington, the Carolinas, the southern states, and FL.
But anyway, welcome!
The only banana hardy enough for your zone without much protection is the ornamental Basjoo, whose fruit is small and heavily seeded. If you want to grow good edible bananas successfully, which I always recommend anyone do, you should consider a greenhouse or moving indoors or in a cool (not freezing) dry place for the winter. And just in case of accidents. . . Try cold hardy and dwarf varieties. Namwah, Brazilian, Orinoco, California Gold, Goldfinger, and Rajapuri are all short and somewhat hardy bananas that won't die in a light freeze, but should still be given TLC anyway. And, if you want bananas before winter - Veinte Cohol is a variety that though most definitely not cold hardy, will give fruit before the season ends if gotten in the spring.
If you want to freak your neighbors out, which I LOVE doing over here, you can grow the bananas outdoors until right before it gets too cold, then erect a greenhouse or a protective structure over them for the winter, then uncover them the next frost-free date. And, in that case, definitely choose a more cold hardy type so it endures the winter better. My Namwahs can handle 28 degrees without any protection and still have a live P-Stem. They come in both dwarf and full 12-14 foot sizes.