Ballyhaise in Cavan was the coldest Met Eireann weather station in the country last night at a cold -3.8c.
3 counties are now under a status orange rain and snow warning this evening with a further 8 under a status orange snow and ice advisory.
The rest of the country is seeing a yellow warning now for rain or ice and snow.
Already, snowfall has been reported for much of the south of the country with higher ground in Leinster also seeing some accumulations.
Transport disruption is likely this weekend, with those travelling asked only to do so if necessary and leave plenty of time if you are travelling.
The NTA says all public transport operators are on alert and it’s understood they'll be updating their social medias with advice and information.
Already, the Taoiseach says the emergency rough sleepers plan has been activated.
Uisce Eireann is reminding people to protect their pipes from freezing weather and to turn off water to any frozen or burst pipes.
We're also being told to keep our phones on charge and take it with us on all journeys should we need it.
Check on elderly, vulnerable and isolated neighbours and take all precautions when working alone or with livestock. The Be Winter Ready website has more advice on preparing for severe weather. While the Met Eireann site will have the latest weather information.
