Snow has fallen in quite a few places today but there's plenty more to come tomorrow.
Most of Wales is in the firing line for heavy snow - probably the worst since December 2010!
Check out the snow art photo gallery from 2010.
There is a Met Office amber warning covering most of the country. Amber means be prepared.
Five to ten centimetres (2 to 4") of snow is expected widely with bigger drifts in some areas.
A red warning has been issued covering the Valleys and the Brecon Beacons. Here 20 to 30cm, up to a foot of snow, is possible with blizzards.
A red warning is rare and means take action such as avoiding all non-essential journeys. Severe disruption is likely in these areas.
In Cardiff and Swansea a few centimetres of snow are expected. However later in the day, the snow may turn more to rain on the coast from Gower around to Pembrokeshire.
Tomorrow night further sleet and snow is likely with rain more likely in the southwest.
On Saturday light snow will fall in places with a risk of ice. Sunday should be drier but remaining very cold.
Next week, there is a risk of further snow on Monday.
So, winter is set to tighten its grip later tonight and tomorrow.
Don't forget you can keep up to date with the latest traffic and travel news and any school closures on Radio Wales, Radio Cymru and on bbc.co.uk/wales.
I will also keep you updated via the blog and on Twitter @derektheweather
Take care and stay warm.
