In Harrisburg area, it was 34* at 2:30 pm, dropped to 28* by 5:00 pm, now 16* at 9:00 pm, calling for 0* by 6:00 am Tuesday.
My DS circulator is running at about 475* top temp with MPD almost fully closed. I'll adjust the thermo control up a bit before bedtime.
Our "heat pump" (btw, has there ever been a mechanical device with a more grossly inaccurate name???
) has been cycling on and off every 10 minutes or so for the last two hours, thanks to our very poorly sealed house. I expect it'll be running nearly full time when the temps hit 0, but even then there will be no backup "toaster" heating running. Electric meter spins like a buzz saw when those starting kicking in.
We're very fortunate around here...the cold snap is only supposed to last about 36 hours.