It's literally -30C today here, so I feel you.
I am a huge boot lover, here's my top three favourite boot makes:
Tod's - most comfortable boots in the world. They make everything from really classic equestrian boots (below) to biker boots, to things that are a bit more out there (mine are olive green pony hair). They also feature their trademark sole as shown below, and this gives amazing grip.
Lanvin - I find Lanvin to make boots that are the perfect marriage of comfort and fashion. They make a flat soled, tall boot with a secret, built in heel in a huge variety of finishes season to season. The boots fit like a glove, and you can find one in literally any finish you can imagine. I've seen biege leathers as featured below, seude fringed camel coloured boots, distressed brown with buttons up the side, etc.
Prada (red label) - Their sportier, younger label boots often have vibram soles, which are super comfortable and have great traction. Plus their leather is butter soft and the cuts tend to be sleek and urban. I would recommend them for their wonderful basic, black leather casual style boot.
All three of the above makes have an interior fully lined in leather which offers warmth, and of course, they are all built to last for years and years and years. I wear mine in snowy, wet, freezing Canadian weather, and they all look brand new.