Are sugar gliders found in the wild in Wisconsin?

No, it is far too cold for gliders to survive in such an area.

Sugar gliders are found in Australia (including its island state of Tasmania), Indonesia, and Papua-New Guinea. They were originally native to Australia, but easily spread to other northern islands.

Climatic conditions preferred by sugar gliders include rainforests and bushland (both wet and dry sclerophyll forest). They can adapt to cool-temperate climates, such as that found in Tasmania, and warmer, humid climates of northern Australia, but they are healthiest in drier bushland rather than moist rainforest. They cannot survive in areas where it snows.