It is impossible to tell the future. This fact has never stopped a single person from trying, and it will not stop me now. So much for the disclaimer.
It is possible to watch the climate trends since 1990 in this region, and to extrapolate the ways the weather is changing. One of the most obvious elements of this shift is the weakening of the Gulf Stream. Because of this, hot air and water are not being removed from the Gulf of Mexico, which encourages an increase in storm activity, particularly in the form of hurricanes. A super-heated Gulf Coast means a storm system barely sustaining itself as a category one hurricane named Katrina could be super-charged to a category five. But, in general, the increased heat in the Gulf, and throughout the region, has increased evaporation. In turn making this one of the wettest years on record. Perhaps the most interesting change has been the increase in tornadoes in the region.
Ok, what does this all mean? Its getting hotter and wetter. As the poisons in the air settle, and the active deforestation due to human activity ceases, the situation will become very simple. Hotter, wetter, an excess of carbon, a release of human-bound nutrients, a reduction of poisons, a dramatic decrease in pesticide use, and deforestation will all lead to a drastic increase in plant growth, which will cause an increase in herbivore populations, causing an increase in carnivore populations.
Hotter and wetter with a large amount of plants. The region seems to be changing into a temperate rain forest. How much hotter is impossible to calculate. But ten years ago kudzu could not grow well in Washington DC because it was too cold. It currently grows in New York.