I would not hesitate one moment about towing any TT in the rain.
Just slow down for safety's sake and give it a good going over at your first chance, be sure to use a flashlight.
Note any wet spots and then repair them or have the dealer do so.
I carry a poncho for wet weather, you can wear it or lay on it as needed.
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping