Yellow warnings for snow and ice remain in force after severe flooding and snow caused travel disruption and school closures across the UK.
The Met Office said the winter weather is expected to bring icy roads and travel delays across much of the west of England, Wales, the north and west of Scotland and Northern Ireland.
Major incidents were declared in Lincolnshire and Leicestershire on Monday following flooding caused by heavy rain, and there are still hundreds of flood warnings in place across England.
North Yorkshire Police said the body of a man had been recovered from floodwaters near the village of Beal.
Sleet and snow were expected overnight in parts of the north-west and south-west of England, the Midlands and Wales.
Wet conditions and thawing could also cause ice patches to form in the morning, and the yellow warning remains in force until 10:00 GMT.
In Scotland, similar conditions are likely to affect areas including Strathclyde, the Highlands, Aberdeenshire and the Northern Islands, with a snow accumulation of five to ten cm expected in higher areas.
The current warning expires at noon.
For many there will be single digit temperatures along with dry conditions and some sunshine is expected for the rest of Tuesday.
In Northern Ireland, rain, sleet and snow were expected to continue overnight on Monday, with a snow and patchy ice warning in place until 11am.
As of 5am on Tuesday, almost 200 flood warnings, including one severe warning, and around 300 flood alerts were in force across England.
The warnings mainly apply to parts of Worcestershire, Warwickshire, Leicestershire, Nottinghamshire, Lincolnshire and Peterborough, with parts of Cheshire, Yorkshire and the south coast also affected.
The severe warning, indicating major disruption and danger to life, applies to a part of the River Soar near the village of Barrow upon Soar in Leicestershire, where several caravan parks were evacuated on Monday.
The Environment Agency said flooding of homes in the village was expected to continue and river levels would remain high until Wednesday.
Less severe flood alerts are in place across central, north-west, south-west and southern England, as well as Yorkshire, while a further 13 alerts are in place across south and north-east Wales.
Nationwide Rail is advising passengers to check before traveling due to ice and snow, which they say could cause speed restrictions and line closures.
On Monday, rescue teams in Leicestershire helped at least 59 people who had been trapped in their homes or cars by floodwaters, while in Lincolnshire 50 children were taken to safety by volunteer 4×4 drivers after that his school would be isolated.
The region’s ambulance service, East Midlands Ambulance, also declared a critical incident for the first time, with flooding partly responsible for the “level of escalation”.
In North Yorkshire, police said the body of the man recovered from the floods had been informally identified and they were in the process of tracing the man’s relatives.
Prime Minister Sir Keir Starmer said his thoughts were “with everyone affected” by the floods and sent his thanks to “the first responders working hard to keep communities safe”.
