I would think an electric strike would probably do better since you can run it off of Mains power and it’s usually the batteries that are the problem.
How i made my doors unlock... ON THE CHEAP (under $50) (electric strike)
You’d have to add a separate keypad if you wanted one, but you could put that in a sheltered box if necessary. A lot of security systems in cold weather climates do that.
@rboy is an expert on locks, I don’t know if he has any observations one way or the other on specific smart lock models.
Otherwise @tgauchat @yvesracine or some of our other Canadian members may have some ideas. 