If you're going to Nashville in 4 weeks, that would be mid- November ... you might get a trace of fall color but most of it will be gone by then. The weather should be crisp but not cold - probably highs in the 60s (F) and lows above freezing. Fall weather can be changeable, tho - not that unusual to have temps in the 70s or, on the other extreme, snow. Overall, tho, I imagine it will be a bit warmer and drier than Nova Scotia. :-)

Enjoy your trip.

Cindy in Harrisonburg, VA (orig fr TN)