Some parts of the United Kingdom are also covered by Yellow warnings from the Met Office for Snow and Ice.
Yellow weather warnings for ice are in place in north-western Scotland and the Northern and Western Isles, alerting travellers to be wary of slippery roads.
Devon County Council has issued travel advice and warned people to only travel overnight if absolutely essential.
The South West appeared to be hardest hit by the cold snap as snow 12cm deep was measured on Bodmin Moor in Cornwall, according to the Met Office, and schools an airport were closed.
The Met Office issued an amber alert last night that warned of power cuts, travellers being stranded and a potential risk to life.
Temperatures in Braemar, Aberdeenshire, plunged to minus 14.5C (5.9F) on Thursday evening, which is the lowest temperature recorded anywhere in the United Kingdom since 2012, according to the Met Office.
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'The highest snowfall accumulations are likely to be in areas above 150 metres or so'.
Details: A band of rain will arrive from the southwest on Thursday afternoon, quickly turning to snow and becoming heavy at times.
Snow is likely to settle, meaning Friday could be a snow day for many, but some uncertainty remains, Mr Burkill said.
The Met Office tweeted: "Snow, initially moving north and east across parts of southern and southwestern England, the Midlands and Wales, will stall and tend to fragment". There will be some variations and differing amounts of rain and snow, several cms in places with 10-15cm forecast over the Brecon Beacons.
Even where snow does not fall, icy stretches are still to be expected.
The Met Office said there is a 60 per cent chance of a sleet shower at 6pm which will turn into heavy snow by 10pm. Temperatures will remain low all weekend with ice expected on untreated roads.