Meanwhile, a yellow wind warning - which is in place for Munster, Leinster and Galway - comes into effect at 3pm on Saturday, with gusts of up to 110km/hr expected.
There will also be sleet, snow and rain after the Met Office issued two yellow weather warnings for Eastern Scotland and Northern England.
But today, temperatures in the day will reach a maximum of around 9 degree Celsius, with a few outbreaks of rain from the west this morning.
Tomorrow Sunday will be a cold, bright day with sunny spells.
It will see wintry showers give accumulations of up to 3cm of snow, with larger amounts on higher ground - especially in Ulster and Connacht.
Monday is forecast to be relatively calm, but will be followed by four days of heavy rain and bitter winds and temperatures across Britain plummet towards sub zero. Highest temperatures will range from 4°C to 6°C.
"The showers will be most frequent in the west and north and will become more isolated this afternoon".
As skies clear from the west overnight into Sunday morning, ice is expected to form on any untreated surfaces. Frost and icy patches will develop also.
Public Health England forecasters have extended a cold weather health alert until Tuesday and today swathes of the country were hit by wind and even some snow.
'Most of us will see snow and rain, and there's going to be a lot of wind.
However, the outlook for the weekend is for more icy conditions with wintry showers, ice and frost expected. Sharp or severe frost and icy patches will develop at night.