Our temperature went down to -6.5*F last night. Ouch!! I had the ceramic heater going in the chicken coop and the small monitor shows their temp: 13.5*F. The girls were no worse for the wear, but we had a pipe freeze in the house. So far it seems the pipe did not burst, but we are cautiously watching as it thaws. I can't remember ever seeing the temperature this low in this area before. Brrrr!