The first named storm of the season is set to batter south-east England, as pockets of the North continue to be hit by snow showers.
The Met Office has issued an amber "be prepared" weather warning ahead of Storm Angus, from Bournemouth to Dover, for coastal winds and gusts of up to 80mph.
A yellow "be aware" warning for wind and rain associated with the storm has been issued over a larger area, including London, with gusts of up to 55mph expected elsewhere.
Up to 1.6in (40mm) of rain is predicted in some areas, and Met Office forecaster Simon Partridge warned of localised flooding if drains become blocked with leaves blown off trees by the high winds.
"It is the first storm of the season, coming quite late at this time in November," said Mr Partridge.
"This will be a bit of a shock to the system for most people in terms of wind and rainfall.
"Any weak branches are likely to come down in the first storm."
Storm Angus is due to hit the South West of England at around 8pm or 9pm on Saturday night, moving north-eastwards and continuing over East Anglia on Sunday morning.
But Mr Partridge said the storm will move off quite quickly into the North Sea towards Europe around midday Sunday, with the rest of the day expected to be dry with sunny spells.
Northern areas can expect more chilly weather with fairly light winds and clear skies.
Drivers crossing the Pennines were confronted with a covering of snow at high levels but all main routes remained open.
Winter wonderland scenes greeted walkers above 1,000ft (305m) in areas of the Peak District and the Yorkshire Dales, with some light snow showers hitting lower ground in West Yorkshire.
Further north, Durham Police tweeted: "A66, Bowes to Cumbria, snow on both carriageways, slow moving but passable with care. Gritters hard at work."
Braemar in Aberdeenshire dropped to minus 8C (17.6F) on Friday night, with sheltered areas in Scotland set to plummet as low as minus 10C (14F) overnight Saturday and into Sunday morning.