BrrrGlad to see the East is sharing in our latest cold snap.  High today was -4, outside on the deck it's now -15 on its way to -25 they say.  Of course this is really nothing to complain about - up near Tok, only about 250 miles by road to the northeast, the high today was -29 and the low is right now -49.  My last visit to Tok we were wearing shorts and t-shirts - strange to think about!  Oddly, 2000 feet above town at Alpenglow ski area, it's +6 tonight.  Pleased to see Saranac Lake, NY was making the record cold spot for several days in the -35s.
When it's cold like this we don't really do much outside.  Great excuse to stay home and cook and be a family.  It's our first cold winter since we moved into this house; we're finding a few small cold spots but otherwise the house is very cozy.  A needle of cold air blows in near the bottom of our sunroom french doors.  A little bit of glaciation on the base of a few windows but not bad at all.  
Rule of thumb, the plumbers told us when our furnace was installed, is that a properly-sized furnace should run continuously on the coldest day of the year (around here, they consider that to be -19 degrees).  Our thermostat shows the older part of the house ran for 3/4 of the day but the newer sunroom (more modern but with warm-roof and pillar construction) ran 9/10 of the day.