I'm down in Tasmania at the moment... their Summer is our Winter so I guess this is as cold as I'm used to.
Ugg boots, lovely snuggly pants and woolly jumpers. And a fire.
I would keep the thermostat set on 62 in day and 60 at night but hubby is cold natured since he has been ill. Daytime I set it on 75 (never gets that warm though) and at night I turn it to 62. I wear sweats, tshirts with a sweater, fuzzy socks and my beat up Santa Claus slippers (they are warmer than my other slippers). Hubby has a heated throw and we also have throws laying around if needed.
I've turned down the heat to 68F during the day and 63F at night because the furnace was running nonstop in subzero temps . During the day, I wear regular clothes and a lovely sweater that I just bought online. It is all synthetic and so light and warm. I love it. When watching TV or reading, I use a lap blanket and a sleeping cat. Usually it's just Lily, but Mingo has gotten over his shyness and wants his lap time, too. At night, I sleep in warm, soft PJs and chenille sleep socks. My feet get so cold they're almost numb. Sometimes, two furry hot bodies sleep with me too.