It is looking unlikely that Ireland will have a white Christmas on December 25th, according to Met Éireann forecaster Michelle Dillon.
She said milder temperatures are likely to stick around for the next few days since the Arctic air mass moved away.
She told Newstalk Breakfast any colder, snowy weather might be a day or two late for Christmas.
"We can dream, like the song says," she said.
"At the moment temperatures have really increased, it's very mild out there.
"Temperatures at the moment ranging 11 to 13°... the Arctic air has been replaced by a tropical air mass.
"Temperatures will taper back more to average values through this week - ranging by day more like 7 to 10°.
"With that [there will be] unstelled, some wet and windy weather."
'Getting colder again'
For Christmas Day itself, she said this is still not 100% clear.
"There is a bit of uncertainty in the detail, but at the moment it looks like we'll still be seeing those average temperatures - but there is a little bit of uncertainty in that," she said.
"After that then - into St Stephen's Day - possibly things getting colder again.
"At the moment, it looks like staying on the more average temperatures, so some wet and some windy weather.
"There could be a chance of a few wintry flurries straight after Christmas Day, maybe into St Stephen's Day, especially in northern parts".
She said the uncertainty comes from the modelling they look at.
"Sometimes our weather is more certain than others - and at the moment we can be certain up until Thursday, Friday.
"After that then we're getting different answers from our computer model.
"We've 52 answers that we look at, some of them are giving different answers than others," she added.