I've lived in the boreal forst of British Columbia ( 53 - 54N) for the past 40 years. Some winter bush work, sometimes very cold.
From the thread title, only 3 things come to mind:
1. Get out of the wind. Some sort of outer windproof layer. For me, that's a hooded snow camo smock over my coat.
2. Frozen branches are brittle. Stay out of the closed forest on windy days.
3. If a big pine or spruce decided to dump several cubic feet of snow on you, above all,
keep that out of your neck, your mitts and your boots. For me, that's snowmobile gloves and boots.
Or, something like a 36" dump overnight.