Snow showers, thunderstorms and sleet are expected to fall in locations across the country today.
Met Eireann have put a Status Orange weather warning in place across the country.
Weather forecasters are warning that snow showers will be heaviest and most frequent in northern and western areas - this is expected to turn to sleet later in the afternoon, with any snow confined to high ground.
Top temperatures during the day will range between four and seven degrees - but it will feel colder due to strong southwest to west winds.
There will be more showers this evening - and more prolonged ones in the northern part of the country.
Temperatures will dip to lows of minus one degrees tonight.
Frost and icy patches are expected overnight.
Tomorrow the outlook is slightly better with temperatures expected to rise to eight degrees.
More rain is expected for the rest of the week.
However, Friday is looking well with temperatures expecting to hit 12 degrees with sunny spells forecast.
Temperatures will dip again on Sunday but it will be largely dry, Met Eireann say.
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