The quiet start to the weekend will give way to blustery showers as cyclonic weather systems push high pressure aside.
Two arms of a shattered jet stream will collide with a storm-causing low-pressure system to the north of the country.
Flood warnings have been issued for areas of the UK, with heavy rain and high winds anticipated.
The Met Office has issued a flood warning for the north of England as fall approaches, and some predictions anticipate snow in the next week.
Jet stream splits to unleash 'ugly' wind and rain onslaught
The region is bracing for rain today before western regions of the UK enter the fray later this week, as per Express.
On Sunday, Britons are advised to have umbrellas handy as an "ugly" weather system approaches from the Atlantic.
According to Met Office meteorologist Alex Deakin, high pressure will slink out through the second half of the weekend, and then weather fronts and low-pressure systems will unite to deliver an awful-looking weather front our way on Sunday.
The jet stream is divided into a northern and a southern band, and there is a low-pressure region that each arm of the jet stream is attempting to mix with and push along.
This area of low pressure contains tropical air with increased energy.
This will bring clouds and rain to the northwest on Sunday, but it's unclear whether it will extend further south.
Winds will continue to pound the country until next week, bringing rain bands from the Atlantic, he said.
However, due to a northerly breeze allowing for westerly gusts, it will seem milder than previously.
"There is a very strong signal that westerly winds will dominate next week," Deakin said, adding that "low pressure to the north and high pressure to the south will provide rather vigorous westerly winds at times."
The primary weather trends for next week continue to be that westerly winds will dominate, bringing lots of showers in from the west and drier to the east.
There is also a softer signal for next week.
Temperatures in certain regions of the country might reach 20 degrees Celsius in the second half of the week.
According to Netweather forecaster Ian Simpson, a deep low-pressure system will rock the nation as the weekend approaches.
Two bands of the jet stream are expected to steamroller towards Britain next week, according to weather models.
Warm air injected into Canada will disrupt the jet, pushing low pressure toward the UK as temperatures begin to fall.
According to meteorologist John Hammond, a more dramatic change in the weather is expected to begin mid-week.
The jet stream will be distorted as warm air is forced up through eastern Canada, bringing a massive region of low pressure down toward us.
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Flood warnings issued as Brits brace for rain and strong winds
The alert further stated that, while levels are gradually declining, they are still high and will stay so throughout the day and nighttime, as per The Mirror.
More rain is expected in the area on Sunday, exacerbating the situation, and experts are closely monitoring levels and cleaning debris from weed screens in the region, according to the notice.
Avoid utilizing low-lying walkways and any bridges near local watercourses, and avoid walking or driving through flood water.
The outlook for the rest of the UK is ambiguous. Things are looking a lot better in the country's south and east.
However, in the central and eastern parts of the country, we "should cling on to hazy light sunshine," according to BBC meteorologist Helen Willetts, with highs of 17 or 18 degrees and "feeling pretty nice."
On Monday morning, a weather front will roll through, bringing "wet and windy weather" to the south and east, followed by showers.
Early fog patches in the south quickly dissipate, and the rest of England and Wales enjoy a great, bright, breezy day with some sunshine.
Rain and high winds are sweeping east through Scotland and Northern Ireland from the northwest.
Late morning clouds and rain clear southeast England, then dry with sunny spells throughout the central and southern areas. Monday will be windy with occasional showers in the north.
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