UK weather forecast: Where and when will it snow in the UK this week?

The Met Office has triggered a severe cold weather alert as Britain braces for the chilliest night of the winter so far.

Temperatures are set to plummet as low as -6C in the North East of England this week as a blast of Arctic air heading to the UK brings with it heavy frosts, ice and a flurry of snow showers.

Forecasters have now issued a level 3, or amber, cold weather alert warning of severe conditions across all of England between 6pm Wednesday and 9am on Monday December 12. The alert is triggered when the country faces extreme cold weather that could increase the health risks to vulnerable patients and disrupt the delivery of services. 

Under level 3, social and healthcare services are required to take action to protect high-risk groups.

Snow is set to fall in the North East from Wednesday, with temperatures falling as low as -6C by Thursday. The current English record is -5.4C at Redesdale Camp, Northumberland, on November 30. 

In Wales, the coldest temperature of the season was -2.8C at Libanus, Powys on December 2.

In the Scottish Highlands on Wednesday, a warning has been issued for up to two inches of snow at low levels and four inches in areas at least 650ft above sea level. 

A Met Office spokesman said: ‘It will be turning colder on Wednesday and Thursday with snow showers across northern Scotland and perhaps parts of Northern Ireland and north-east England.’

Elsewhere, high pressure means sunny spells are set to dominate by midweek but clear skies will mean harsh frosts, with temperatures to fall as low as -6C in the Pennines on Thursday night.

In rural areas of Wales and southern England, -4C or -5C is possible.

By day, even London and south-east England could see daytime temperatures fall to just 2-3C on Wednesday and Thursday and barely rise above 0C on Friday.

Alex Burkill, Met Office meteorologist, said: ‘At the moment it is cloudy, meaning there won’t be huge differences between daily highs and overnight lows but, as we go through this week, we will get that cold northerly flow with clearer skies so sunny and crisp by day but even colder at night.’

‘It’s going to turn even colder and feel even colder still with temperatures well below average for the time of year both by day and by night.

‘In much of England, including the South West, we could see temperatures of minus 5C or minus 6C which is exceptionally cold.’ 

He said that temperatures overnight Wednesday into Thursday would drop to minus 7C or minus 8C – or even colder.  

‘It looks like the cold is going to be very widespread, perhaps Northern Ireland and East Anglia won’t be that cold, maybe just a degree or two below freezing, otherwise we are talking about several degrees below freezing across Scotland, Wales,’ he added. 

‘We have a snow warning across the northern half of Scotland for Wednesday and that is when the snow showers coming from the north will be most impactful, they will probably start on Tuesday and we will see very significant snow in the north.’ 

Mr Burkill warned the cold snap ‘could last a week’ – but is not likely to bring major snowfall for England and Wales.

He said: ‘The northerly flow is going to stay with us, it’s not going to be particularly unsettled, so there will be some showers, it’s mostly going to be largely dry but cold.

‘From the middle of next week there are some signs we may see some more unsettled weather with milder weather coming up from the south but it’s far away at the moment.’