HAIL and snow are expected to fall heavily in Scotland and Northern Ireland with warnings of traffic disruption and power cuts.
However, it’s not all chilly misery for Britain in the coming days with southern England expected to see temperatures hotter than Istanbul.
The mercury could climb as high as 11C in Cornwall and 10C in London and southeastern England on Tuesday.
Meanwhile the Turkish capital might only warm up to highs of 9C as showers rain down on the historic city.
The yellow warning for snow and ice covers all of Northern Ireland and all of Scotland and the Western Isles – except for the east coast.
It comes into effect from 6pm on Monday and lasts until 11am on Wednesday morning.
The warning from the Met Office reads: “Frequent and heavy hail and snow showers are likely to affect many parts of Scotland and Northern Ireland from Monday evening, continuing for much of the day on Tuesday.
“Travel delays on roads are possible, with a small chance of cancellations to public transport.
“There is a small chance that power cuts will occur and other services, such as mobile phone coverage, may be affected.
“In addition some roads and pavements may become icy, increasing the chance of injuries from slips and falls.
“This warning has been updated to extend its validity time into Wednesday.”
According to Met Office forecasters, there will be occasionally heavy rain and strong winds in the northwest of the UK.
It will move southeastwards across the rest of the country overnight accompanied by strong winds.
Blustery showers will follow behind the rain, falling as snow on Scottish hills.
Tomorrow will see the rain clearing from southeast England during the morning, leaving the whole UK with strong winds and blustery showers.
Showers will fall increasingly as snow in the north of the country.
There is a more mixed outlook for Tuesday with sunshine, wintry showers, and strong winds.
However, showers and winds will ease on Wednesday.
Further rain will fall overnight which will be followed by some very strong winds and showers on Thursday.