Temperatures are set to drop as low as -5.
As many parts of the country woke up to snow this morning, motorists are being urged to take care on the roads.
Met Éireann's yellow snow-ice warning remains in place until Saturday, and the national forecaster says there'll be widespread frost at night with icy stretches on untreated surfaces.
The mercury is set to drop to as low as -5 on Thursday and Saturday. With areas of Munster or south Leinster tols to expect "some significant accumulations" of snowfall on Thursday.
Met Éireann's John Eagleton told Breakingnews.ie,"The big threat of snow this week remains late on Wednesday night/Thursday."
"The winds turn easterly and a depression to the south of Ireland injects a lot of moisture into those easterly winds.
"So that's the potential for a good bit of snow."
Tonight will see rain, sleet and snow "affect much of the southern half of the country in strong easterly winds".
That will continue into Thursday with predictions of "strong easterly winds and highs of just 1 to 4 degrees."
Slippery road conditions in many parts this morning, with snow affecting the north-west in particular. Extreme caution advised. Full updates at https://t.co/PSzIBsvOzE pic.twitter.com/Rs6MiKLr3o
— AA Roadwatch (@aaroadwatch) January 30, 2019
Take care.
Meanwhile AA Roadwatch is warning motorists to take extra caution on the roads this morning.
Drivers are being reminded that it takes up to ten times longer to stop on an icy road. In affected areas, slow down, keep further back from the vehicle in front and keep all manoeuvres gentle.
Pedestrians are also being asked to take care as paths and roads remain icy and slippery with a risk of black ice.
The counties worst affected by icy roads are Cork, Sligo, Limerick, Galway, Tipperary, Roscommon and Cavan.
