Lately when I turn off the shower the pipes in the wall make a noise similar to the sound of the toilet tank refilling. Lasts about the same length of time, along with a couple short stops before the noise finally quits. Also, any connection to the weather dipping into the 30 degree and lower area?

Is the pipe in an exterior wall? Have someone dump a bucket of water onto the shower pan and listen to see if you hear the same noise.

NO, it's an interior wall. It's the tub/shower in the Master bed room.

Would it sound like a gurgle or water running under pressure? Follow Bobs instructions and get back with the results. Good luck, Tom