A bitter blast of Arctic winds will send temperatures tumbling, with Met Eireann forecasting lows of just 3C overnight.
The national forecaster said: “A predominantly northwesterly airflow will lead to a mostly polar maritime airmass affecting the country, bringing close to average or slightly below temperatures for the time of year.”
While today is set to be mostly dry and sunny with highs of 14C to 16C, the meteorological service says it will turn “quite chilly” overnight.
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Giving its overall forecast for Saturday, it said: “Today will be mainly dry with sunny spells and just well scattered showers, these mainly in northern counties and on north facing coasts. Highest temperatures of 14C to 16C with moderate northerly breezes.
“Tonight will be dry with clear spells and a few coastal showers. A few patches of mist or fog may develop. Quite chilly with lowest temperatures of 3C to 8C and light variable breezes.”
Looking ahead to tomorrow, Met Eireann said it continued: “Sunday will be a cloudier day with a fair amount of dry weather and a few showers. Towards evening, rain will develop in the north and northwest and will spread southeastwards through the evening and night along with fresh, gusty westerly winds. Highest temperatures of 13C to 16C."
The cooler weather will continue into next week with heavy rain forecast at times, before turning milder and unsettled next weekend.
Its forecast reads: “Monday will be cool and breezy with bright or sunny spells and just well scattered showers. Highest temperatures of 12C to 16C with moderate to fresh, gusty northwest winds.
“Monday night will be mainly dry with winds easing and lowest temperatures of 7C to 10C.
“Tuesday will start off mainly dry. However, rain will spread eastwards through the morning and early afternoon. It will continue through the evening and will be heavy at times, especially in Ulster. Highest temperatures of 12C to 16C with moderate to fresh west to northwest winds.
“On Tuesday night, the rain will clear eastwards with showers following. Lowest temperatures of 8C to 12C.
“Wednesday and Thursday will be cool days with sunny spells and scattered showers. Highest temperatures of 11C to 14C with light to moderate west to northwest breezes
“At the moment it looks like Friday and next weekend will become much milder and more unsettled with heavy rain and strong winds at times.”
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