The Met Office said that rain and strong winds will move eastwards across the country.
Some showers could turn heavy or thundery, particularly in the south west.
But temperatures will hover around the average – and once the rain has cleared, it will be breezy with glimpses of sun.
A yellow wind warning will be in place for the Outer Hebrides from 8am until 6pm today.
Forecasters expect gusts of up to 80mph in the islands, whipping up large waves and delaying flights and ferries to and from mainland Scotland.
Tonight there will be blustery showers in the south west, some of which could be heavy with a risk of night-time thunder.
The east of the UK will stay mostly dry and chilly under broadly clear skies.
Tomorrow will also see a mix of sunshine and blustery showers, but it will be a little colder than today.
There could be some thunder and heavy downpours in the west, while the east enjoys sunny spells.
The wind and showers should gradually ease on Friday, with Saturday set to be frosty and fine.
But rain and gusty winds will return overnight, with Sunday set to be fairly grey.
Yesterday Blackpool Victoria Hospital suffered a blackout after the basement of its Women and Children’s Unit flooded.