Weather, Dozens of flood alerts
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The Met Office warned the wintry weather "could create some particularly tricky travel conditions" and may leave some vehicles and passengers stranded in some parts of the country as it issues yellow and amber alerts.
Temperatures in Northern Ireland, England and Wales fell to their coldest of the season so far, with minus 6.6C recorded at RAF Benson in Oxfordshire, minus 6.4C in Sennybridge in Powys and minus 2.8C at Altnahinch Filters in Co Antrim.
The WXCharts.com weather data shows a significant buildup of snow across Scotland. In the north-west of the country, snow could be as deep as 4cm, with Aberdeen, Dundee and Glasgow all likely to be affected.