Jeff, I'm in Birmingham and we share the same climate. You will need bring it inside on cold nights and days. On those days when the temps are in the 40 and 50s, you can put it outside. On days and nights when the temps drop below 38 degrees, I would bring it inside. The easiest way is to buy a set of hand-trucks. Get the ones with inflatable rubber tires. Load it up and push it outside beside a door where you go in and out every day or at the end of the driveway where you park. Leave it sitting on the hand-trucks. Make it a habit to decide every afternoon if the tree needs to come inside. When you see the tree as you go inside, you will remember to move it if needed. BTW, hand-trucks are one of the best gardening item I ever bought.

Be careful with those low maximum and minimum temps--compared to the other citrus, limes are much more tropical. I would hold off on putting it outside until minimum highs are at least in the 50's and lows are above 40F. (Oranges, kumquats, limequats, mandarins, calamondin, and Meyer's lemon are a bit more resistant to the cold end of the spectrum.) Good luck with your new acquisition!

Congradulations....

I wish you success. Coming here, you will not fail..:-)

Mike