Snow in Wrexham town centre on Friday, 0845 GMT There are some difficult driving conditions in parts of Wales on Friday morning after snow made an anticipated short-lived return in parts of Wales.
About two inches of snow has fallen in the heads of the Valleys, Powys and parts of Monmouthshire.
Heavy snow was forecast to move into Denbighshire, Flintshire and Wrexham.
More than 30 schools in Powys, parts of the south Wales valleys and north Wales have been closed.
Sub-zero temperatures were reported in parts of Powys and Denbighshire.
A band of rain, sleet and snow was pushing up from south Wales after midnight but problems were expected to be temporary.
Some schools confirmed closures on Friday morning, in Powys, Blaenau Gwent, Monmouthshire, Merthyr, Torfaen, Wrexham, Conwy and Denbighshire.
The Met Office warns of between 8 and 12cm (3-5in) in some areas, with snow heaviest in Powys and north of the M4.
Temperatures in many areas will fall close to freezing or below and many will wake up to snow or frost although it is expected to be only temporary.
Source: BBC Wales weather
On Friday morning people in Wrexham, Llangattock, near Crickhowell, and Gilewen and Abergavenny, Monmouthshire, reported that it was snowing heavily.
The Llangynidr mountain road between Crickhowell and Garnlydan had a thick layer of snow and was being used only by 4x4s.
The A465 heads of valleys road between Hirwaun and Glynneath was also experiencing difficult driving conditions.
Heavy snow was reported in Llangollen, Denbighshire, Llandrindod Wells, Powys, Caerphilly, and Usk in Monmouthshire.
Snow was also causing problems on the B4333 and B4299 between Carmarthen and Newcastle Emlyn.
BBC Wales weather forecaster Derek Brockway said: “We’re watching a deep area of low pressure currently out over the Atlantic. This will move towards Britain on Friday pushing a front northwards bringing a mixture of rain, sleet and snow.
“Most of Wales can expect a brief spell of snow but not everywhere, with probably very little in Cardiff, Newport and Swansea.
“Most of the snow will be north of the M4, with 2-5cm (1-2 ins) likely, and 10cm (4 ins) on higher ground. So there is a risk of some disruption in places for a time
“But the snow won’t lie for long with rain and rising temperatures. Tomorrow night will be less cold with heavy rain washing away any snow.”
He said Friday night would turn less cold with some heavy rain in places, with the forecast for next week milder, but wet and windy weather at times.
The weekend forecast is for patchy cloud with occasional showers and dry spells with blustery winds that will ease later on Sunday.
Temperatures will remain cold until at least Monday.
Fresh supplies of salt are being delivered across south Wales ahead of the next wave of wintry weather.
A ship arrived at Newport’s South Dock earlier this week with 12,000 tonnes of salt from north Africa.
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