Donegal may well turn white and not green for St Patrick’s Day next Friday.
Met Eireann is warning that the cold weather will return next week and may be around for March 17th.
Temperatures across the north-west are due to dip again on Tuesday.
Temperatures will drop below freezing in a biting northwesterly wind, and there is a chance of sleet and snow for most parts late on Tuesday.
Tuesday night is forecast to be very cold with lows of minus three to four degrees in the western half of the country and there will be a chance of snow and ice.
Met Éireann forecaster Andrew Doran-Sherlock said the forecast for St Patrick’s Day weekend remains uncertain with cold air to the north and warmer air to the south.
“Any time there is a potential of rain hitting cold air there is a possibility of sleet or snow, but as it currently looks that would be most likely be on high ground,” he said.
“It doesn’t look like it will be anywhere near as widespread as of late. It is looking like there could be some rain in the south and east and coldest in the north and west, but not the cold that we have had of late.”