The freezing weather and Arctic airflow which has reduced overnight temperatures to nearly -4 degrees is set to continue into the weekend.
A nationwide low temperature and ice warning, as well as an alert for fog, will be in place this weekend.
Both warnings come into effect from 5pm on Friday evening and will last until 12pm on Sunday.
Met Éireann has issued a separate weather advisory over the freezing conditions, which will last until the end of Tuesday.
A very cold weekend with frost ice & fog lingering through the day in places🥶🌫️
Daytime temperatures barely above 1 to 5 degrees with lows falling below freezing for most🌡️📉
There’ll be scattered showers too & some may fall as hail, sleet & snow, especially on high ground🌦️❄️ pic.twitter.com/V7W7vHsGW7— Met Éireann (@MetEireann) December 1, 2023
The forecaster said there will very cold temperatures during the day and at night with persistent frost and icy stretches on roads and footpaths.
Dense fog will form in places, while some showers of hail and sleet are expected too.
Met Éireann said Friday night is set to be another extremely cold one with freezing weather continuing into Saturday and Sunday, bringing more fog in places.
It will remain very cold with frost, ice and some wintry precipitation in the early days of next week. Met Éireann said the forecast for next week remains uncertain, but current indications suggest that wet and windy weather will spread over country by midweek.
