As the Arctic airflows settles in over the country, Met Éireann has issued a Status Yellow weather warning for snow and ice in the northwest.
There will be snow showers in Donegal, Leitrim and Sligo, which may lead to some accumulations, according to the national forecaster.
The weather warning is set to last until 9:00a.m tomorrow (Wednesday, January 18).
A similar alert has been issued for counties Cavan; Monaghan; Cork; Kerry; Longford; Louth; Meath; Offaly; Westmeath; Mayo and Roscommon.
This warning for scattered snow showers and icy stretches is set to run from 5:30p.m today until 9:00a.m tomorrow.
Met Éireann
Meanwhile, a winter weather advisory issued by Met Éireann will remain in place until Friday (January 20).
The Arctic airflow will result in further sharp to severe frosts, ice, and some showers of hail, snow and sleet.
There is also the potential for patches of freezing fog to form in the calm conditions.
The forecaster said that today will bring a mixture of sunny spells and wintry showers, falling as snow in some parts of the country. There will also be some isolated thunderstorms with hail.
Conditions will be driest across southern and eastern counties.
Daytime temperatures will reach just 1° to 4° in moderate northwest winds.
It will stay very cold tonight with frost and ice forming on untreated roads and paths.
There will be some sleet and snow showers and more isolated thunderstorms.
The temperatures will fall back to between -3° and 1° in moderate westerly winds.
On Wednesday, it will be cold with sunny spells and scattered showers which will be most frequent across the north and northwest.