Storm Emma will arrive from the south today, bringing moisture and an added risk of ice.
And as the public braced itself for worsening conditions, officials from government departments, councils, utility and emergency services yesterday confirmed arrangements are in place to deal with any fallout from the extreme weather.
A yellow weather warning from the Met Office is in place across the province and will last until Saturday night, with up to 10cm of snow expected to fall both today and tomorrow.
There could be as much as 15cm in the countryside, while on Saturday morning the focus of concern will turn to potentially treacherous ice.
The powdery snow that has come with the Beast from the East will turn wetter tomorrow with the arrival of Storm Emma, meaning "better snowballs", according to Nicky Maxey from the Met Office.
"The Beast from the East has brought dry, extremely cold air right across Europe," she said.
"So when Storm Emma arrives bringing wet air into the mix, there will be a slight thaw meaning potential for ice.
"Temperatures will go up ever so slightly, although it will be far from balmy in Belfast, still feeling very cold at about minus six degrees."
There were a number of road closures and traffic collisions throughout yesterday evening, as well as warnings from the authorities about icy conditions.
In addition to disruption on the roads, travellers were hit in the air and on the rails with flights in and out of Belfast and trains across Ireland cancelled.
Translink said a red weather alert in the Republic meant even more disruption was expected today.
Bus Eireann cancelled all cross-border services and Translink said the Enterprise service will also be badly affected.
It said the last Enterprise train to Dublin will leave Belfast at 12.35pm today, while the last Belfast-bound Enterprise will depart from Dublin Connolly station at 1.20pm.
Major events, including tomorrow's Ulster PRO14 rugby match against Glasgow, have already felt the brunt of the weather, with organisers putting the game back until next month.
Meanwhile, an army of around 300 staff and 130 gritters worked on the road network overnight.
Officials at the Department for Infrastructure warned drivers to allow more time for journeys and to take care on the roads through the course of today.
Windy weather could cause lying snow to drift, they added.
The Executive Office last night urged the public to look out for elderly neighbours and vulnerable relatives as sub-zero temperatures carry on into the weekend.
The annual Northern Ireland conference of the Irish National Teachers' Organisation, which was due to take place at the Lough Erne Resort in Fermanagh tomorrow and Saturday, has also been pushed back.
The conference is attended by more than 500 teachers every year.
The cold weather is expected to last through the weekend, with showery flurries meaning the snow covering will vary from place to place.