Rachel,
Believe me, we have had some COLD weather, even in SC. Of course we just get the cold, not the lovely snow to go with it. Just in case you need proof....last month's natural gas bill for the furnace was $310. That is three times more than the highest bill I have ever had. Between gas prices and the cold weather, we have been zapped!
Remember...to us southerners, two nights in a row, below freezing, is a winter to remember! And its been far worse than that this year. Will admit, I had the windows open and it was over 70.