Snow's been falling for most of the night in parts of south-east Wales, and the Met Office says there's more to come.
An amber 'be prepared' warning will remain in place until 9am, with a yellow warning of ice across the whole country.
Cardiff and Vale University Health Board has cancelled the majority of outpatient appointments.
David Wood reports from Porth, in the Rhondda.
More top news
Over 100,000 fans descend on Cardiff next week for One Direction concerts leading to a "Full Closure" of the city centre on both nights.
A photograph appearing to show a seagull flying in formation alongside the Red Arrows display team has gone viral.
Turning increasingly cloudy with rain affecting western parts by mid afternoon. Rain spreading eastwards but drying up overnight.