2 week forecast highest elevation in Smokey Mountains--Clingmans Dome
https://www.timeanddate.com/weather/@4614210/ext
Looks like 10/18/2020 low is expected to be 48.
We traveled to CO last October and the lows were in the low 20's for the week and half we had scheduled. We cut our time in CO short after the week as it was supposed to be in the teens for a few of those days in the second week.
We have the tank heaters and kept the furnace set at 50 or above. The campgrounds we stayed at had electric. Also, the outside shower head was winterized. We had no problems with the trailer, but we froze our tushies off in the am.