It's getting colder!

This is actually from yesterday, early morning, when it was very cool and very misty.
I went out to get the recycling boxes back and noticed the garage door, looking rather Scottish!
On the other side of the door there's the Saltire type cross made of steel so that must have been a warmer temperature than the misty outside. The heat being transmitted through the wooden door.
I've never noticed this happening before in all the 26 years we've lived in this house.