We've started burning wood pretty much full time now. Until this week, I've been burning pellets in the wood stove via a pellet basket. The photo below shows the indoor and outdoor temperatures late last night:
By this morning, things had cooled somewhat, both in and out. The indoor fell overnight by almost 3 degrees, while outdoors it went from -9 to -12. I could have kept the indoor from falling, but by doing so, I might have had to light the fire again. So far, this was the coldest night of the season.