Early morning walkers cast long shadows in Hyde Park in London, Britain December 16, 2017.
A Met Office spokesman said: “A polar maritime air mass will feed in behind the rain on Monday, turning things colder and windy with frequent showers bringing some snow.”
Outside of the city, in the south east temperatures could reach below zero on Wednesday and Thursday night.
Stars as far as the eye could see, crystal clear skies sent temperatures dropping in the hills of Herefordshire near Longtown tonight (Sat) as the big chill continued for yet another day. Seasonal Weather, Herefordshire, UK – 16 Dec 2017
This weekend is set to be cloudy with temperatures peaking at 5C to 7C for London.
Tyre tracks in the Scottish Borders
The harsh conditions are expected to last from Monday evening through to Tuesday afternoon.