The Met Office has said the current cold weather alert will remain in place until 12pm Wednesday.
It comes as temperatures plunged as low as -8.7C in places on Monday night.
Snow and icy conditions has caused travel chaos across the country in recent days leaving many people stranded or having to abandon their vehicles overnight.
Temperatures are expected to plunge over the next three days as 2014 gets set to end on a cold note.
Temperatures are expected to drop to a low of -10C (14F) overnight - the coldest it has been all year - 48 hours after snowfall affected travellers in parts of northern England, Scotland and the Midlands.
Bookmakers have installed odds of 5/1 that snow will fall in London on New Year's Day, with odds of 9/4 and 3/1 for Edinburgh and Belfast, respectively.
Clear skies allowed a satellite image to be taken, showing snow in the Pennines, north Midlands, Northern Ireland and Scotland yesterday.
A chilly night with widespread frost and fog in some parts of the UK which will be slow to lift in the morning.
It's going to feel very cold in parts today, with temperatures between 3C and 6C before falling to as low as -6C in some areas overnight.