Storm-battered householders and motorists are being warned Atlantic gusts will be replaced by frost, ice and snow showers as temperatures plummet over the coming days.
And commuters this morning are warned to expect severe frost with the threat of black ice in many areas.
AA Roadwatch are reporting several roads nationwide to be at risk of black ice and have advised motorists to slow down, drive "with extreme care" and to leave plenty of braking space.
The road-watch crew have detailed several routes to be affected this morning.
Both gardaí and the Road Safety Authority (RSA) urged motorists to exercise extreme caution when driving - particularly along inland areas and on higher ground - given the risk of ice on many already water-logged roads.
Temperatures may sink to as low as -3C, with some areas also experiencing snow showers.
However, while snow and sleet will turn to heavy rain showers in some western areas, it will generally be dry, bright but very cold for most of Ireland.
Met Eireann warned that it will remain bitterly cold into next week with the next four or five days marked by frost and icy patches.
Milder temperatures are unlikely to return until next Monday.
Meanwhile, the clean-up continued yesterday after Storm Imogen, with ESB repair crews focusing on damaged power lines in Cork and Kerry.
Frost&fog gradually clearing.Mainly dry in N&E some sunny spells.Outbreaks of rain in parts of Muns S Lein &Atlantic coastal co.'s High 5-8C— Met Éireann (@MetEireann) February 10, 2016
Frost and ice in some parts this morning. Slow down and drive with extreme care. For details in routes affected see https://t.co/qvBPcgxUj8— AA Roadwatch (@aaroadwatch) February 10, 2016
At the height of the storm, more than 5,000 families and businesses were left without power due to damaged lines.
An ESB repair crew had to be brought to Cape Clear island, off west Cork, by helicopter yesterday, after a ferry was effectively trapped in the harbour.
Cape Clear's new harbour storm gates - installed in July 2015 - could not be opened after Storm Imogen hit local power supplies.
Both the main power supply for the storm gates and a back-up support system were left inoperable.
Winds of 196kph were recorded at the Fastnet Rock at the height of Storm Imogen.