Snow warning: Every region in UK where mercury to plunge to freezing TODAY

Three weather warnings for and remain in place today - as the mercury is set to plunge to freezing or below in several regions.

says snow and ice will cause disruption throughout a "cold and unsettled week" as an Arctic maritime airmass moves southwards over the country. The three warnings concern areas as far south as Shropshire in England and Powys in Wales.

And "disruptive snow" will arrive by first thing this morning, which will cause hazardous conditions on the roads during rush hour, especially across the Midlands. Dan Suri, chief meteorologist at the , said: “An area of low pressure slides its way eastwards on Monday night. The associated frontal system, marking the boundary between cold air in the north and milder conditions to the south, will bring disruptive snow to some areas between Monday evening and Tuesday morning.

"This is likely to coincide with rush hour, leading to disruption to some transport routes across a central swathe of the UK on Tuesday morning. It will also be windy in the far south. Updates to the warnings throughout the week are likely, so it is important to stay up to date with the latest forecast."

The has assessed data recorded by forecasters, including the Met Office, to publish a full list of the regions in which temperatures will hit freezing or below at some point in the daytime hours today. Temperatures will reach similar lows to Monday when the mercury struggled at -1.3C in the Scottish Highlands, and -0.1C at RAF Spadeadam, Cumbria.

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Tuesday's coldest places Scottish Highlands

The mercury is likely to plunge to -6C across the Scottish Highlands throughout the morning, forecasters at Ventusky say. Snow and hail showers will affect northern parts of at times, becoming heavier and more frequent through much of Tuesday and then overnight into Wednesday morning.

It is likely 2 to 5 cm of snow will accumulate quite widely, with up to 10 cm in some places by the end of Tuesday, and perhaps 15 to 20 cm accumulating above 300 metres. Showers may be sleety at times along north-facing coasts, although icy surfaces are likely at times.

Aberdeenshire

Likewise, snow is expected across Aberdeenshire. Lows here of -5C are anticipated throughout the morning, though it will get slightly warmer during lunchtime - and then dip again in the afternoon.

It will be coldest here inland in the west of Aberdeenshire but those living along the coast in the east could see warmer temperatures. Snow will fall as sleet or rain along the North Sea coast too, it is believed.

It'll hit freezing across Ayrshire and the Scottish Borders today too as Scotland bears the brunt of the Arctic chill, which will slowly storm its way southwards.

Northern Ireland

Most of Northern Ireland will see temperatures plunge to freezing or colder in the daytime today. The worst of the weather will be in the east, particularly across County Antrim and County Londonderry, with Belfast also affected.

The yellow weather warning concerns large swathes of the nation. The Met Office says ice is the primary concern, and will lead to challenging driving conditions throughout rush hour.

The weather service added: "Outbreaks of rain will arrive from the west during Monday afternoon, turning to sleet and perhaps wet snow at times during the afternoon, evening and first part of the night. Snow is expected on high ground above 200 to 300 metres, where several centimeters of snowfall is likely, and perhaps 5 to 10 cm across the higher parts of the Sperrins and Mournes.

"Settling snow looks unlikely on low ground. However, as skies clear overnight, temperatures will fall widely below freezing with ice forming on untreated surfaces. This will lead to difficult travelling conditions."

Derbyshire

Most of the northern Midlands is subject to a weather warning but concern is greater for higher ground across the Derbyshire Dales, especially through mid-morning, due to ice. Snow will accumulate on hills across Derbyshire and neighbouring Staffordshire, including across the Peak District.

Some snow will settle to lower levels, where 5 to 10 cm would prove much more disruptive - this remains uncertain, but seems most likely across parts of Yorkshire and Derbyshire.

As rain, sleet and snow clear on Tuesday morning, icy stretches are are likely to form on untreated surfaces. National Highways Severe Weather Resilience Manager, Darren Clark said: “Gritters will be out treating our roads around the clock when ice or snow is forecast, but it is still important to drive to the conditions.

“Keep your distance and reduce your speed, because even in conditions that seem normal, and where the snow is not settling, it can be slippery if ice patches have formed, or where fresh grit has not been worked into the carriageway. Drivers should plan their journeys, monitor weather reports and pack a snow kit of blankets, food, water and a shovel."

Powys

Even by midday, parts of rural Wales, notably Powys, will struggle at freezing. The Met Office says: "A period of rain, sleet and snow will occur during Monday evening, overnight into Tuesday morning.

"The most likely scenario is for most of the snow to accumulate on hills, with 5 to 10 cm possible above 200 metres and perhaps as much as 15 to 20 cm above 300 metres."