I’m in Maine, and it got down to around -20F here last winter. We’ve been in the 30s at night for most of October, and 1 night in September as well. We also got our first snow/ice storm on October 18.
I have a pair of Carhartt coveralls that I wear for farm chores, and a pair of Sorel boots.
I also love Patagonia’s Capilene long underwear. When its really cold I wear Capilene 3 under Capilene 4, which are the 2 warmest, and it does help. I also have fleece pants and jackets, from Patagonia & LL Bean. And I have a down jacket from Patagonia and down vest from North Face.
I just got myself some new gloves & liners, which I hope will keep me warm. Also, socks, gloves, hats & scarves made from alpaca fiber are wonderfully warm & soft.
I’ve heard that Mountain Horse’s Polar riding pants are good, and I’m planning on getting a pair this winter.
One pair of glove liners I have is Thermasilk, which is made by Terramar.
Another thing that helps me get through the winter is hot epson salt baths.
Will probably find out more soon about how this will work for me.