Brits are facing a freezing start to Thursday where temperatures could drop to -4C before the mercury rises and it could reach a balmy 18C ahead of a hot and sunny weekend.
A large high pressure system will bring the soaring temperatures on Friday but before that people are likely to wake up to frosty start on Thursday.
The weather for the rest of March remains changeable with the UK set to see the highest temperatures of the year so far with it reaching 18C on Friday but there is then an unsettled outlook for next week.
Going into Thursday, BBC weather said that it could get as low as -4C in Scotland and it will be chilly with wind and rain for much of the day in the north while further south there will be warmer weather and sunshine.
Met Office forecaster Clare Nasir said: “For the Western Isles and Northern Ireland the clouds will thicken here with some showery bursts of rain through the early hours of the morning and a strengthening wind.
"Elsewhere a fairly widespread frost leading to a cold start to the day come Thursday morning but for many it will be bright with some sunshine. It is not the case across western Scotland, you can see some heavy bursts of rain, snow above 600m or 700m. That rain extends down towards Northern Ireland."
Ms Nasir said it is likely to be "very warm" over the weekend.
"Temperatures are on the up over the next few days you can see here most places will be fine and dry with some lovely sunshine," she continued.
"Into the weekend high pressure reaching across Denmark will allow for settled conditions to extend right across the UK, but some stronger winds on Saturday certainly, gusts over the hills and moors as well as the mountains but with a southerly wind it will feel very warm across some parts particularly I would say the Moray Firth where we could see an 18C.
"Generally the weekend is looking fine and dry, much warmer with some sunshine."
The Met Office has said that the hottest day so far in 2022 was 17.2C in Pershore, Worcestershire.
And forecaster Dan Stroud agreed that it could get warmer than that over the coming days.
"We are likely to see some very pleasant spring sunshine, especially for the London and southeast area, during the course of the Saturday," he said, reported The Sun.
"We're looking at temperatures of up to 16, 17, and perhaps even a rounded 18C could be possible."
UK forecast for the next 5 days
Mainly dry in the south and east, unsettled elsewhere.
Today:
Sunny spells for many, especially in the south and east with southern England seeing the best of the sunshine. Also some showery rain over parts of Scotland, Northern Ireland, northwest England and, later, Wales. Windy in the north.
Tonight:
Rather cloudy across parts of England and Wales, with fog patches forming over parts of Wales and the Midlands in particular later. Clearer further north with some showers and frost.
Friday:
A chilly start with early fog patches over England and Wales soon clearing leaving a fine day with plenty of pleasantly warm sunshine for most. Turning windier in the north
Outlook for Saturday to Monday:
Mostly settled, dry and sunny, with some early frost and mist/fog patches but warm by day. Showers and areas of rain moving erratically northwards Sunday and Monday, subduing temperatures somewhat.
