Hi Jim:  I have not really ridden in the rain in all honesty, at least not the way you might think.  I have ridden the trike with a Velokit on it in the rain but that hardly counts!  the Velokit keeps the rider dry and the motor only gets a bit of mist from splashing and stuff.  the mountain bike is unpleasant to ride in the rain!

The Currie is a motor that bolts onto a 36 spoke X3 wheel so it not exactly a "hub motor" it is a chain drive to an attachment on the hub.  I have been very satisfied with mine.  But Currie is no longer importing e-bike "kits" to the USA.  EV Deals may have them still, but I don't think so.  The best bet these days in my opinion is the Cyclone which puts the motor in the chainline so that you have all the rear wheel gears.  Making the motor much more efficient.  That extends the range as well.

mark