Everyone threw on an extra blanket for the night.  In the morning ice had formed on the inside of the bedroom window, despite the fact that I'd gotten up in the night to feed the woodstove.  It's a testament to the architecture of the Cape Cod style that we can even heat this house with wood when the wind chill is ten below.  

The upstairs is cool, the ground floor ranges from cool (for Monica) to comfortable (for me), and the basement is hot -- where the laundry and the snow-gear dries, the cats loll, and the boys play on the Wii in short sleeves.