January 4th was a sunny day. While the sunshine is enjoyable, it means that the temperatures are low, as the cloud "blanket" that keeps us warm during winter has gone, and night time temperatures go well below freezing. The sky looks to be white, but this is more a case of overexposure than cloud.
This is part of the roof of my garage. Note that this photo was taken at 3:30PM, and the water is still frozen.
A closer view of the frozen water on the roof. Makes me feel cold just looking at it!