There's a couple of showers effecting the eastern areas of Mid. TN right now (Jamestown, Spencer, etc.) and tomorrow, look for these same areas to see some rain and storms. The possibility may shift a little more westward to maybe include areas around Celina, Smithville, Gainesboro and other areas on the Highland Rim and the Plateau. The lows tonight will range from the upper 60's to low 70's in Nashville, too the mid 60's on the Plateau. Here's the overnight lows for Mid. TN, Highland Rim, and the Cumberland Plateau.
Nashville: upper 60's to low 70's
Clarksville: upper 60's
Cookeville: mid 60's
Columbia: upper 60's
Manchester: low 70's