Temperatures could reach -6 degrees with snow and ice warnings in place

Kenneth Fox

Temperatures could drop to -6 degrees overnight as Met Éireann has warned of a "treacherous start" to Monday morning with frost, ice, and freezing fog patches.

As the cold snap continues, wintry showers in the north and west with some snow accumulations, sharp or severe frost, and ice can be expected.

A status yellow snow-ice warning is in effect for Cavan, Donegal, Monaghan, Connacht and Louth.

The warning came into effect this morning and is valid until 11am on Monday.

Temperatures are expected to fall to between -2 degrees and -5 degrees generally, with sharp or severe frost and icy stretches with black ice too.

Met Éireann has warned of hazardous travel conditions and poor visibility.

According to the forecaster, other counties could also receive some wintry showers.

Meanwhile, a status yellow low temperature and ice warning has been issued for Carlow, Dublin, Kildare, Kilkenny, Laois, Longford, Meath, Offaly, Westmeath, Wexford, Wicklow, and Munster.

This warning is valid until 11am on Monday as well.

Overnight temperatures are forecast to range from -2 to -4 or -6 degrees yet again on Sunday night.

As for the general outlook, Sunday will be another cold and frosty day, with early morning ice and fog or freezing fog slow to clear.

Conditions will be dry and sunny in the southeast, while scattered wintry showers will affect other areas, bringing additional snow accumulations.

Daytime temperatures will range from 1 to 5 degrees, with light to moderate westerly winds.

Sunday night will turn very cold again, with further sharp to severe frost and icy stretches.

⚠️Snow-Ice warning for Cork and Waterford

Rain turning to snow as it clears southwards this evening with some accumulations possible.

Possible impacts:

Hazardous Travel conditions
Poor visibility

Valid: Sunday 04/01/26 from 17:20 to 20:00

ℹ️ https://t.co/3041XHjphi pic.twitter.com/mugY2MicND

— Met Éireann (@MetEireann) January 4, 2026