UK cold weather forecast: Sudden change as SUB-ZERO blast barrels in from Europe– new maps

BBC Weather: UK set for ‘a touch of frost’ and rain

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The UK has experienced a much-needed rest bite in weather conditions in recent days after heavy rains and strong winds from Storm Arwen and then Storm Barra caused widespread disruption. A high pressure system has since lingered across the country and kept temperatures relatively mild for the time of year.

In the coming days, fog is forecast in many areas and will help to trap the warmer air – but conditions set for a sudden change next week as winter-blast hits.

Britons can expect sub-zero temperatures across the whole country from Monday December 20, according to the latest temperature charts.

Minimum temperature maps produced by WXCharts show lows of 0C across the length of the UK by 6am on Tuesday, December 21.

Tyler Roys, Senior Meteorologist at AccuWeather, said Europe is set to be charged by an area of high pressure during this period.

Mr Roys added the weather system is poised to allow “cooler air” to sweep across the UK.

The Met Office long-range forecast for this period adds spells of windier – and even wintry weather is on the cards.

Heading into the Christmas period, thermometers are set to nosedive even further.

Central areas of Scotland can expect lows of -1C by 6am on Thursday, December 23.

Much of England and Wales are poised to maintain lows of 0C – but wind chills will make temperatures feel even colder.

Air temperature maps suggest the changeable weather pattern is being triggered by a winter blast from Europe.

From December 21, a band of cold-air can be seen moving in a westerly direction from the continent.

Eastern areas of the UK are set to feel the first effects of the winter chill, before the whole of the UK turns icy-blue on the maps by December 23.

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In the 850pa maps, which measures air temperature 1,500 metres above sea-level, a light shade of blue covers the country and this suggest the mercury will be between 0C and -5C.

Mr Roys told Express.co.uk: “Temperatures overall are not going to vary from the overnight to the afternoon due to low cloud around and areas of fog. Where there is fog over the next couple of days is where temperatures will not budge very much.

“All of this is due to an area of high pressure that will be settled across the UK and Ireland. This will lead to hardly any wind flow for many locations.

“This area of high pressure is expected to linger across northwest Europe through much of next week.

“If the area of high pressure remains over the UK or to its west, cooler air will be allowed to come in from either the east or north next week.”

The Met Office long-range forecast from December 20 adds: “In general, cloud amounts will tend to reduce with time, with a corresponding increase in the risk of overnight fog and frost, which may be slow to clear by day in some areas.

“Towards the middle of the period, there is an increasing chance of more unsettled and windier weather affecting the UK, with rain, and perhaps snow, possible for some places.

“Temperatures will generally be near to below normal, perhaps rather cold in the south, feeling chilly where any fog persists, and locally mild in the north and northwest.”

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