
'Wild and weird' Arctic weather means Britain could experience weather colder than that at the North Police.

For the first February in recorded history, forecasters are predicting the Arctic could inch above freezing.

Fears of rapid polar warming were mounting as temperatures in the North Pole and across northern Greenland soared to well above average in recent days.

A weather station at Cape Morris Jesup in Greenland - the most northerly meteorological outpost in the world - recorded temperatures 17-22C (30-40F) warmer than usual — and above freezing all day on Tuesday.

And with parts of south-east England braced for subzero temperatures in coming days — Britain would well be set for temperatures lower than in the Arctic tundra.

A rower on the River Cam in Cambridge this morning was up early enough to enjoy a golden sunrise. Temperatures are expected to stay bitterly cold into Sunday and the new working week

Two men run along the banks of the River Cam in Cambridge this morning. Britain is set for the coldest February week in five years as freezing air arrives from Russia

A cyclist bikes along the River Cam in Cambridge this morning surrounded by frost-covered fields. The Met Office has issued an amber cold weather alert, which warns of increased health risks to vulnerable and elderly people

Rowers breathe out into the cold Cambridge air as they sail along the River Cam this morning

'The arctic is in meltdown and wild and weird weather is happening in front of our eyes,' said Rob Downie, the head of polar programmes WWF.

'We need to take responsibility as evidence shows us that sea ice is in severe decline due to our changing climate.'

The meteorological start of spring next week will feel more like mid-winter as a Siberian blast brings frosts of -6C (21F) and up to four inches of snow.

The Met Office has issued two separate warnings for snow on Monday and Tuesday. Some rural communities could become cut off and there is a risk of delays to road, rail and air travel.

But Britain will feel the icy grip of and easterly icy blast tomorrow night, when temperatures will plummet below zero.

‘It’s expected to stay cold all next week,’ Met Office meteorologist Martin Bowles warned. ‘Spring will come eventually but it will be postponed.’

A woman wrapped up warm enjoy a morning coffee today in London while walking across the Millennium Bridge

The cold blast - dubbed the beast from the east - will see temperatures plunge below zero from Sunday night, with some areas seeing lows of minus 8C. Pictured: Londoners braving the big chill dressed accordingly this morning

A woman adjusts a man's scarf of the South Bank in London as freezing air moves over from Russia to grip Britain in a snap set to be the coldest in five years

Temperatures in some rural spots could fall even lower to -8C (18F) tomorrow night. Northern England will be slightly less cold, with temperatures of -3C (27F) to -5C (23F)

Daytime highs are set to fall to 4C (39F) by Tuesday. Temperatures could drop as low as -6C (21F) in southern England over each of the next four nights.

Temperatures in some rural spots could fall even lower to -8C (18F) tomorrow night.

Northern England will be slightly less cold, with temperatures of -3C (27F) to -5C (23F).

Snow is due to hit south-east England first, on Monday afternoon.

The Met Office warning covers Kent, East Sussex, parts of London, East Anglia and into the south Midlands, from 4pm on Monday and continues through the whole of Tuesday.

Some areas may receive only around one inch of snow, but four inches could fall elsewhere.

Public Health England warned the cold could be fatal to those who struggle to cope when temperatures fall, including the elderly and those with heart and lung diseases. Pictured: Women in winter coats walk through London's South Bank

In a second warning, forecasters say the same weather will spread north to all areas east of the Pennines up into Scotland, as well as the south-east of England, through Tuesday with the worst conditions in the morning.

More snow showers are predicted later next week, most likely across eastern and central parts of the UK.

Easterly winds in southern Britain will make it feel bitterly cold while night time frosts will be widespread and severe in places.

The meteorological start of spring is March 1, Thursday, when temperatures usually average 10C (50F).

The freeze, caused by high pressure over Scandinavia pulling in easterly winds from Siberia, will be the coldest spell for several years for parts of southern England and Wales.

Public Health England warned the cold could be fatal to those who struggle to cope when temperatures fall, including the elderly and those with heart and lung diseases.

Council leaders urged people to keep an eye on vulnerable neighbours.

The Royal Horticultural Society said the cold snap could mean a bumper crop of blackcurrants, apples and pears this year by stopping the flowers on fruit trees from coming out too soon and suffering frost damage.

The RSPB urged householders to put out food for birds who would struggle to find it in frozen ground.