The new year will get off to a cold start today with even more frosty conditions and possible snow developing during the first week of 2021, according to Met Éireann.
A band of snow showers brought a dusting of snow to many areas yesterday morning and the current cold spell is set to continue well into January
New Year's Day will remain cold, although it will be mostly dry and bright with sunny spells and the chance of just a shower or two.
After a cold New Year's Eve, most areas will see a mixture of sunny spells and cloudy conditions with showers mostly confined to the west today.
It will be mostly dry, but it will be a relatively cold day with highs of just 3C to 5C although it will be slightly warmer in the west, according to meteorologist Paul Downes.
There will also be widespread frost and icy patches.
Temperatures will drop again overnight to between 2C to -3C, with widespread frost and wintry showers likely on higher ground.
Showers are also likely in northern and western coastal counties today with a brisk northerly wind.
The first weekend of the new year will remain cold with freezing overnight temperatures.
Tomorrow will have another cold start with showers, some wintry, while "temperatures will struggle to get above zero", Mr Downes said.
Sub-zero temperatures will remain in place overnight on Saturday and Sunday, dipping down to as low as -4C and -3C respectively.
Sunday will stay cold, with daytime highs of just 2C to 4C in most areas but it will be slightly warmer in the north and north-west with sunny conditions but with biting winds from the north and north-east.
However, there is an increasing risk of showers in the east on Sunday afternoon and a chance of wintry showers developing, Mr Downes said.
The current cold snap is due to a high pressure system which is steering cold showers over us from Denmark bringing an increased risk of snow showers developing, especially on the east coast.