Ireland's weather to set to take a dramatic turn this week with temperatures to plummet by 21C within days.
Monday could be the hottest day of the year yet with 18C heat and "long spells of spring sunshine" in many areas.
However, the mercury could dip to -3C overnight on Wednesday and Thursday as a cold snap hits.
READ MORE: Met Eireann confirm incredible cold turn as temperatures nosedive by 21C and snow possible
There are also suggestions that snow could possibly fall before the week is out, although this remains uncertain.
Met Eireann says rain could turn into "wintry showers" mid-week, with frost also on the cards.
Before then, Monday will remain generally dry and sunny but mist may drift onto some eastern and southern coasts at times.
A few isolated showers are also possible inland later, with highest temperatures of 13 to 18C.
Any lingering showers will die out early on Monday night and it will become dry with clear spells.
Lowest temperatures will be between 0 and 5C in light variable breezes, falling near calm at times, allowing mist and fog to develop.
A forecaster said: "Mist and fog will again clear away during Tuesday morning but patches may linger on coasts for a time.
"Good sunshine will develop for most but there will be scattered showers as well, most frequent in the north. Highest temperatures of 11 to 16C, mildest in the west and southwest.
"Scattered showers will ease for a time before picking up again later in the night [on Tuesday], mainly in the north and east.
"Cloud will build from the north too during the night and mist and fog patches will develop. Lowest temperatures of 1 to 5C.
"A mix of cloud and sunny spells with scattered showers [on Wednesday], driest over the western half of the country.
"Colder air with clearer conditions will push down from the north during the afternoon and evening with highest afternoon temperatures over Ulster of just 5 to 9C. Highest temperatures elsewhere in the early afternoon of 9 to 13C."
They added for Wednesday night: "Largely clear overnight and dry for most as showers become mostly confined to eastern parts, possibly turning wintry at times. Cold with lowest temperatures of -3 to 1C with frost developing in mostly moderate northeasterly winds.
"Frost will clear in the morning [on Thursday] to leave a day with good sunshine interspaced with scattered light showers. Noticeably cooler throughout the country with highest temperatures of 6 to 9C.
"Largely dry and clear [on Thursday night] though there will be some showers near coasts. Another cold night with lowest temperatures of -3 to 1C, with frost developing again in light to moderate northerly breezes.
"A largely dry and bright start to the day [on Friday] but cloud will push in from the north through the day along with a few light showers. Highest temperatures of 6 to 9C in light to moderate northerly breezes."
READ MORE: Ireland weather: Met Eireann forecasts dramatic change as 'winter 2.0' on the way with -3C cold snap
Get breaking news to your inbox by signing up to our newsletter.
