I have a digital thermometer in my kitchen window with the sensor on the outside of the house, this is a west exposure. At 5:00 am this morning as I was making my lunch for work it was fluctuating between -39 and -40 degrees! At the moment I have a roaring fire going in the Century Hearth but on-line weather reports say there is not going to be much change in temps for the next few days. With rare exceptions this is as cold as it gets in this part of the country.