We personally haven't hear of any issues with the tape holding up in most winter climates, however, -50° Celsius is pretty extreme, so it's pretty hard to say. As far as water and snow are concerned, there really aren't a lot of place for water or snow to sneak past the liner, since it tucks underneath the plastic caps on the bed rails. The only place where water can enter is next to the cab, but it'll fall into the bed's runners and drain out the tailgate. Nearly any clamp-on tonneau cover will be compatible with the bed rug without causing you problems.