Snow and ice will grip much of the UK over the weekend as the country is left reeling in parts from the effects of Storm Goretti, which left thousands of people facing power cuts, school closures and travel chaos.

The storm brought winds of nearly 100mph after forecasters issued a rare red warning for “dangerous, stormy” winds in the south-west.

More than 40,000 properties were without power in the region shortly before 2pm on Friday, according to the National Grid’s website; about 9,000 had no power in the West Midlands; more than 700 had no power in the East Midlands; and more than 200 were without power in Wales.

Downing Street said support was being offered to homes left without power.

A No 10 spokesperson said: “The latest data I have is that around 0.21% of British customers are without power. Engineers and staff are working to reconnect them as quickly as possible. The latest numbers I have is approximately 150,000 customers have had their power restored so far.”

Forecasters recorded 15cm of snow at Lake Vyrnwy in Powys, 7cm at Preston Montford in Shropshire and 7cm in Nottingham.

Altnaharra, in Sutherland, recorded 27cm of snow, with 26cm at Loch Glascarnoch and 22cm at Durris in Kincardineshire.

The lowest temperature recorded overnight was -13.3C at Braemar, Aberdeenshire, while a peak gust of 99mph was reported at St Mary’s on the Isles of Scilly, the highest recorded since 1991, according to the Met Office.

Steve Willington, the Met Office’s chief forecaster, said more snow was possible on Sunday, after a “largely dry” Saturday away from north-eastern parts of Scotland and England.

A yellow warning for snow and ice will be in force for much of Scotland from 2am until 3pm on Sunday.

Willington said: “A further 2-5cm of snow is possible to accumulate at low levels within the warning area on Sunday, with 10-20cm possible over higher ground. With much of this falling in areas that have already seen severe snowfall, ongoing disruption is likely.

“Those in central and southern England and Wales will see this fall as rain, in what will be a wet Sunday for many.”

A yellow warning covering large parts of Scotland, the East and West Midlands, north-east and north-west England and Yorkshire will be in place from 2am until 3pm on Sunday.

Yellow weather warnings for snow and ice have been extended into Saturday for large parts of Scotland, England and Northern Ireland.

A yellow warning for snow and ice comes into force from midday on Friday until 3pm on Saturday, with further snowfall possible across parts of northern England and much of Scotland, while a widespread risk of ice is expected to cause disruption.

A separate yellow warning for ice will cover large parts of England and Wales from midday on Friday until midday on Saturday as partially thawed snow refreezes, accompanied by wintry showers and freezing fog.

In Northern Ireland, a yellow warning for snow and ice will come into force from 5pm on Friday and run until 11am on Saturday, with the Met Office warning of icy patches and some hill snow.

At least 69 flights scheduled to operate to or from Heathrow airport on Friday have been cancelled, affecting more than 9,000 passengers. The majority of the cancellations are short-haul flights operated by British Airways.

Rail services across England, Wales and Scotland may be affected until the end of the day on Friday due to the weather, National Rail said.

The storm, named by the French weather forecaster Meteo France, was described as a “multi-hazard event” by the Met Office.

Dozens of schools across the Midlands and Wales, where the amber weather warning was issued, announced they would be closed on Friday.

More than 250 schools were expected to remain closed in Scotland, including more than 150 in Aberdeenshire, dozens in the Highlands and Aberdeen, plus a number in Moray.

Forecasters also warned that the combination of melting snow and rain increases the flood risk for some in the coming days.