MET ÉIREANN HAS warned that areas affected by recent flooding could freeze over with temperatures set to plunge to as low as -2 tonight with a widespread ground frost expected.
The weather service has advised people that the country is now in a cold snap, with two national weather warnings in place for snow and ice.
A Status Orange weather warning is in place for Donegal, Leitrim, Mayo and Sligo with snowfalls expected in those areas. A Status Yellow warning is in place for Longford, Cavan, Monaghan, Galway and Roscommon with snow also forecast.
Between four to eight centimetres of snow could fall in these areas.
Met Éireann has also warned of icy patches on roads in Leinster and east Munster, where it will remain largely dry with a widespread sharp frost forecast.
Motorists are urged to exercise caution on the roads whether walking or driving.
Water levels dropping
Meanwhile, the ESB has advised that water levels in Lough Derg continued to drop today with the flow of water through Parteen Weir further reducing to 335 cubic metres per second.
However, the organisation also said that level of water flow will continue to flood land in areas of the Shannon downstream, including the areas of Springfield, Montpelier, Castleconnell, Mountshannon (Annacotty) and the University of Limerick.
The National Coordination Group (NECC) met again today to review the flooding situation and advised the public to be vigilant when travelling on roads as there may be local flooding or debris in places where flood waters have subsided.