Paul Gundersen is a Met Office Chief Forecaster. He said: “Over the last week, the UK has been held in a northerly airflow bringing cold, sometimes Arctic air, to the UK.

“We will still have this northerly influence to our weather patterns until the weekend, but then the cold conditions will lose exclusive dominance over the UK’s weather patterns and we will move into a regime where relatively mild and relatively cold conditions will vie for supremacy.”

“We can expect changeable conditions with colder and milder air not too far away from our shores, but it does seem that the Atlantic ‘has woken up’ compared with recent days and will be a stronger influence, countering any further bouts of extreme cold conditions, although spells of further wintry weather remain possible through the rest of December.”

Until this weekend’s transition we will continue to see wintry hazards especially in northern and eastern coastal areas. Overnight frosts will be severe in places and we will continue to see some freezing fog patches.”

The cold air from the Arctic is also bringing brighter conditions for many, with some dry and sunny weather, particularly away from coasts.

Steven Keates is a Met Office Deputy Chief Forecaster. He added: “The boundary between the two air masses will create a window for snowfall over the weekend.”

“This is likely to be transient in nature as the mild wet air from the west will ‘bump’ into the colder air, before displacing it further east. This potential spell of snow will lead to some temporary disruption before the snow quickly turns to rain.”

“While the freezing conditions remain, drivers especially are reminded that freezing fog, and other wintry hazards will continue to create difficult conditions in places this week.”