Forecasters are predicting that snow will arrive in parts of the country later this week.
Overnight and this morning’s GFS model run shows an area of very heavy rain and milder air moving in from the southwest on Friday morning pushing north-eastwards up over Ireland on Friday, according to Donegal Weather Channel.
The forecaster explained that as this rain moves up over the country, it shows that the upper air temperatures would support this period of precipitation to turn into sleet and snow in places, particularly over upland areas as the mild and most air bumps into cold air which moved in from the north-west of Ireland.
'Not an April Fool's joke come early'
Cathal Nolan of Midland Weather Channel said: "This is not an April Fool's joke come early, but rather there is a pretty credible risk that some areas of the country may see their first snowfall of the 2019/2020 winter season as early as this coming Friday."
He explained that a bitterly cold airmass, for the time of year, is expected to push southeastwards across the country from the northwest on Thursday, with upper air temperatures some 10-12 degrees below average.
At the same time, a very warm plume of air carried within a zonal jet stream will push northeastwards from the subtropical Atlantic, he added.
"As the very warm and moist air comes into contact with the bitterly cold Arctic air, it's expected to generate some intense precipitation leading to a flooding risk in the southeast of the country at present, whereas along the northern and northwestern edge of the rainfall, it's expected to turn increasingly to snow."
Nolan outlined that the areas currently in the highest risk zone are all Midland counties, much of Connacht, south and east Ulster and elevated areas of Munster.
"All upland areas are at risk of seeing some considerable accumulations of snow and some temporary travel disruption along elevated routes."
"Snowfall in October is an exceedingly rare event in Ireland, however, the last time snow was recorded in Ireland during October was 2009," Nolan concluded.