How does paraffin chain wax perform in winter conditions (snow, road salt, -20° C)? I’m interested I switching to paraffin chain wax or a wax product like Molten Speed Wax. But I’ve got concerns about how it might perform in winter where I live in Calgary, Alberta.

It’s supposed to be good for not picking up grime so I’m presuming it will do well to keep from picking up salt and snow, but I do wonder if it won’t just lock up or flake off when the temperatures get too cold.

Any insight or experience using chain wax in winter climates would be appreciated.

(To be clear, I’m asking about the kind of product you melt in a slow cooker and immerse your chain in after stripping other lubes off with mineral spirits. I’m not asking about wax based dry lubes that you apply to the chain while it’s still on the bike.)
I posed this question directly to the people at Molten Speed Wax and got this reply:

Our product works great in winter, the key is to put the chain on the bike inside and run it through the gears when the chain is still warm from the pot. The reason is a newly waxed chain is very stiff in super cold temps., but if you pre-break in the chain before going outside it eliminates the problem. This is a tip we give to fat bikers who race in temps.well below zero F.
Concerning salt and sand, that's really tough on any lube. The fix is to have a backup chain or two so if you ride in wet conditions for some time you can quickly change out a chain with a fresh waxed one. Short rides in the wet are no problem but when in doubt re-wax. We ride outside year round and Minnesota is notorious for sand and salt, but wax performs really well.
One last note, don't worry about wax flaking off. Some excess will flake off but all you need is a very thin layer on the chain and that will stay on the chain, particularly on the inside, where all the friction is.
In sum, ride wax year round, no problem.

Obviously they’re promoting their own product so I’ll take their advice with a grain of road salt, but I think I’m convinced to try it and report back.