Cold snap to tighten its grip on country again
Met Eireann has forecast a return to freezing weather over the coming days, with the possibility of more sleet and snow by next week.
Temperatures will fall back to -1C tonight as people ring in the New Year, but it will remain relatively mild over the weekend.
Forecaster Vincent O'Shea said the worst of the cold was expected to hit on Tuesday evening.
The heavy snowfall of last year's New Year's Eve will not be repeated, with today expected to remain dank and overcast but dry, with less fog than yesterday. Temperatures will remain at a mild 7C to 9C, with very light winds. Tomorrow night, most places will experience a sharp frost as clearer weather progresses from the north east.
Temperatures will fall as low as -4C. Sunday is expected to be a bright, clear day, with a brisk northeasterly breeze but, by nightfall, the mercury will drop to -6C in some places.
Meanwhile, the National Roads Authority reassured motorists that grit supplies nationally had been shored up in recent days as expected shipments have arrived.
"Supplies are up to seasonal norms," a spokesman said.