Homeless charities issued an urgent appeal for members of the public to contact them if they see anyone sleeping rough.
Overnight temperatures are set to plummet to -7C tonight and with as much as 25cm snow expected to fall in the east and south of the country tonight.
Huge efforts are underway to make sure no one is left out in the open.
Charity Inner City Helping Homeless said they had received reports of people sleeping out but had responded to every one of them.
They urged the public to get in touch if they saw anyone they thought might need their help.
Similarly, Dublin Regional Homeless Executive (DRHE) boss Eileen Gleeson, said the public could contact them if they thought someone needed their services.
She told Morning Ireland: ‘We know how difficult it is for people who are homeless on the streets and we are working in the DRHE with the four local authorities to ensure anyone seeking shelter is accommodated.’
She said the emergency plan they have in place is similar to the response that was used during storm Ophelia in October last year.
She added that the DRHE have had a cold weather initiative in place since November 2017.
‘It has been working well,’ she said.
‘Last night we had 104 extra [cold weather] beds in the system.’
Gleeson warned some homeless people may not be aware of the weather is about to worsen which meant it was vital to get in touch with homeless people still on the streets.