Britain had its coldest night of the year as vast swathes of the country fell below freezing - with -13C (8.6F) recorded in Shropshire.
Clear skies overnight saw temperatures plummet below the -12.4C (9.6F) on Saturday night - with the Met Office recording a new low in Shawbury, north east of Shrewsbury.
Yellow weather warnings for snow and ice are in place until 11am on Tuesday, covering vast swathes of the country, including London and the South East, much of the Midlands, Northern Ireland and Wales, as well as the eastern coast of England and parts of Scotland.
In parts of Gloucestershire, 36 homes were without power for a second night after ice and snow caused disruption across the country over the weekend.
Western Power Distribution said the outage was caused by the weather and engineers were expecting to have the power restored by 7.30am on Tuesday.
Meanwhile, dozens of schools in the South West, West Midlands and Wales will keep their gates closed for a second day following the bitterly cold conditions.
The AA said it had its busiest day of the year on Monday with around 25,000 calls from motorists - and was preparing for a deluge of calls on Tuesday.
AA president Edmund King said: “We expect Tuesday to be extremely busy as temperatures plummet overnight, causing even more hazardous conditions on already wet and slippery roads.
“All of our patrols are working hard throughout the country to help those broken down or stuck in ice and snow and we have plans in place to ensure our call operators can travel to and from work safely to answer emergency breakdown calls.”