Temperatures in parts of Ireland dropped to minus 7.5C overnight while weather warnings remain in place.
The lowest temperature was recorded by Met Eireann in Mullingar, Co Westmeath, in central Ireland, while minus 7C was recorded in Athenry, Co Galway, and minus 6.7C in Oak Park, Co Carlow.
Work remains ongoing to restore power, with around 500 homes, farms and businesses said to be affected, while around 4,500 customers – mainly in counties Tipperary, Limerick and Kerry – are without water.
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An orange weather warning for low temperatures and ice for Leinster, Cavan, Monaghan, Munster and Connacht was in place until 11am on Thursday.
Another orange weather warning for low temperatures and ice was issued on Thursday morning for counties Carlow, Kildare, Kilkenny, Laois, Longford, Meath, Offaly, Westmeath, Cavan, Monaghan, Galway, Roscommon and Tipperary.
Travel disruption and delays and poor visibility are expected in affected areas for this warning which applies from 7pm on Thursday to 8am on Friday.
A yellow warning for low temperatures and ice covers all of Ireland until midday on Friday, with widespread frost, ice, lying snow and some patches of freezing fog expected. Potential travel disruption and poor visibility are also possible.
A seagull on a frozen pond in the National Botanic Gardens in Dublin (Brian Lawless/PA)
Meanwhile in Northern Ireland, a yellow warning for snow and ice is in place for counties Antrim, Londonderry and Fermanagh until 11am on Thursday, while a yellow warning for freezing fog expired at 9am.