Met Éireann is warning of more snow and hail today, mainly in Ulster and north Connacht at first but becoming more widespread later. The very low temperatures are expected to last throughout the weekend.
Driving conditions are expected to be far more difficult over the next couple of days in Connacht and Ulster and farmers can expect no growth in early March. However, the light winds have been very good for west coast fishing fleets.
A number of schools in Mayo, Sligo and Donegal could remain closed today if conditions prove to be too difficult for school bus services to operate.
Gardaí in Mayo, Sligo and Donegal reported no serious road accidents yesterday, but attributed this to the plentiful sunshine from early morning.
Overnight temperatures of up to minus six degrees had risen to five and six degrees in most areas of the west yesterday, but the dry conditions are not expected to last.
Achill island, Co Mayo, experienced some snow, and Met Éireann said coastal and mountainous areas would remain most at risk today, with daytime temperatures remaining in low single figures everywhere.
Roads were reported to be "passable" in most areas of Co Mayo, with Ballina reporting icy conditions on secondary routes.
After a light snowfall yesterday evening in Letterkenny, Co Donegal, gardaí said back roads were still "fairly suspect", while main routes had been "well gritted". "We are expecting it to freeze again tonight, but it is lucky that it has kept so dry to date," a spokesman said.
Kerry woke to snow again yesterday, but most roads were clear by noon. West Kerry was worst affected, with the Conor Pass near Dingle impassable. Gardaí warned it was likely to remain so today, and urged motorists to use alternative routes.
However, the N86 between Derryquay and Derrymore on the main Tralee to Dingle route was also severely iced over, with traffic reduced to a crawl.
Most roads were gritted early yesterday. However, drivers were warned to remain cautious in mountainous areas in the south of the county and along the Cork-Kerry border.