Charlie wears cotton pjs and has a very thick comforter. Olive wears pjs with a fleece sleep sack. Tonight I put her in thick fleece pjs because it's extra cold out. I set the thermostat to 72, but Olive's room is the coldest room in the house (big windows) so sometimes I crank hers up to 76 and it keeps the room at 72.
I'm gonna switch her to a thicker sleep sack (we have a wool one from Merino Kids) if it continues to remain this cold.
What is your LO wearing to bed?