It comes into effect from 6 pm tomorrow evening.
Temperatures are expected to drop to as low as minus four degrees in the Midlands, with a number of status yellow warnings issued.
A low temperature and ice warning will impact Laois, Offaly and Westmeath from 6 o'clock tomorrow evening until 11 on Sunday morning.
Donegal will be subject to a snow and ice alert from 8pm today until 11am tomorrow - and again from 6pm tomorrow until 11am on Sunday, along with Cavan, Monaghan, Louth and Connacht.
Met Éireann is warning of hazardous travelling conditions and poor visibility.
Over 90 Exhibitors Set For Live Well Expo In Laois
Trump Only Focused On Own Agenda - Former Army Ranger
Taylor Swift Wax Figure Unveiled In Ireland
Artemis II Crew Sets Record Distance In Historic Moon Mission
A Westmeath Student Accused Of Laundering Almost €200,000
Storm Dave Set To Arrive In Midlands On Saturday
Offaly TD Backs Grants To Tackle Housing Crisis And Boost Town Centres
Concerns Raised Over Eating Disorder Treatment Waiting Lists
Holidaymakers Urged To Book Early Amid Fuel Supply Fears
Live Register Figures On The Rise In The Midlands
PHOTOS: Mullingar Carers Concert
Gardaí Appeal For Witnesses To Westmeath Burglary
HSE Urges Midlands Patients To Use Injury Units Over Easter
Around €10k of Cannabis And Cocaine Seized In Laois
Irish Farmers Warn Not Enough Gov Action On Fuel Costs
Easter Bank Holiday Weekend Road Safety Campaign In Place
CAP Changes Could Jeopardise Farm Incomes - IFA
Niall Horan Tickets On Sale At 10am
€7m Cannabis Seizure In Midlands
Enterprise Minister Welcomes Creation of 400 Jobs