Worthless knowing: In winter it is always the coldest just before sunrise when the sun is on its way up below the horizon.
This is because the sun warming up the air some km's above your head and all the cool air in that region is draticly falling down to the ground, where you are.
As the sun go up its beams warming the cool air closer and closer down to the ground and is speeding up the process.
Now it's after sunset and -10°.
