The Met Office has issued a warning of snow for most of Wales on Saturday as temperatures continue to drop below freezing.
It has issued a yellow “be aware” warning of snow for Saturday, with motorists urged to take care.
A statement from the organisation said: “A band of snow is expected to move slowly across England and Wales during Saturday afternoon and evening. Accumulations of snow of around 5cm are likely in places; this includes low lying areas. The public are advised that some travel disruption may result, and should pay close attention to forecasts as the event approaches. Snow is like to turn to sleet then rain in Wales and more western parts of England later on Saturday.
High pressure over Russia has caused the freeze, say forecasters.
Friday is due to be very cold and dry, but temperatures are expected to rise by the end of the weekend with any snow for Wales turning into sleet and rain.
Over the past few days we have seen the coldest spell of winter so far, as very cold air has flooded across the UK from the continent. On Saturday, an Atlantic front moves in from the west.
Paul Gundersen, Chief Forecaster at the Met Office, said: “As this front moves in from the west it will come up against cold air and we’re likely to see a mixture of rain, sleet and snow across the UK.
“It’s a finely balanced situation, so there is some uncertainty about which areas will see the most significant snowfall, but at the moment the risk is highest in central and eastern areas where we could see up to 5-10cm of snow.
“With this risk of snow and ice over the next few days it is important people stay up to date with our weather forecasts and warnings for the latest information.”
Later on Saturday it is likely that northern and western parts of the UK will see slightly less cold conditions take over, with rain more likely than snow. However, with the rain falling on cold ground, there is a widespread ice risk.