I make January just slightly colder than average across the whole of the UKUK The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland..
A month of sharp contrasts in extreme temperature.
A fairly even distribution of air frosts across the country.
I’m skeptical of no returns in snow so take many of these values with a pinch of salt.