Cold snap bites: Freezing temperatures for the week ahead
The current cold snap is expected to worsen this week as the country is set for frost, ice, hail and snow.
Temperatures will plunge as low as -3C by night, while daytime temperatures will peak at just 2C to 7C tomorrow and Wednesday, which will be the coldest days of the week.
Met Éireann forecaster Jean Byrne said today would start mostly dry but wet and windy weather would move in from the west during the morning.
"This will extend across the country through the afternoon and early evening with strong southerly winds, gales at sea and the possibility of sleet or hill snow in parts of the north or north west, with temperatures from 4C to 8C," she said.
"Behind that rain, it will turn much colder. It will be a very cold night tonight with scattered wintry showers, loads of hail and rain and a risk of thunder. There could be some sleet and snow showers, especially over high ground."
Tomorrow will bring showers of rain, hail, sleet and snow.