The north west is braced for a second week of sub-zero temperatures and wintry showers, weather experts have concurred.
Day-time temperatures today and tomorrow for Derry and Donegal are predicted to hover just above zero, but are forecast to lift slightly towards the end of the working week, with highs of seven degrees Celsius predicted by Friday.
For now, an early warning concerning icy roads and pavements has been issued for Tuesday morning as a result of rain, sleet and snow showers moving in overnight on Monday.
A spokesperson for the Met Office in the north warned: “The public should be aware of the risk of difficult driving conditions and travel disruption.”
Met Eireann in the south meanwhile has predicted further wintry showers for Tuesday evening, with another severe frost and ice on surfaces into Wednesday morning.
Cool temperatures are expected for much of the coming week, with frost and icy patches by night common across the region.
There are some signs that it will be less frosty by next weekend, with temperatures by day back to more normal values for the time of year.