A yellow weather warning for winds, which could cause travel disruption, is in place for the south-west corner of England from 3pm on Friday, with 60mph gusts expected on the coast.
Daytime temperatures are set to be below average for the time of year, with the mercury expected to rise to around 14C London, and 12C in Edinburgh, Cardiff and Belfast.
Night-time temperatures are predicted to sit around the mid single figures.
Met Office meteorologist Aidan McGivern has described the outlook across the nation as a “showery situation” on Friday and Saturday, with drier weather on the horizon by Sunday.
Mr McGivern said Friday promises rain and wind for all parts of the nation.
He said: “It’s going to be a wet and windy start for many on Friday morning
“The heaviest rain will be in north-west England, parts of Wales, and then increasingly the South West, the Midlands and rain reaching the South East by the end of the afternoon as a showery situation develops.
“Eastern Scotland as well as north-east England stays dull and damp throughout much of the day – and with the wind in the North East it’s going to feel raw.”
Forecasters have predicted up to 100mm of rainfall on higher ground in Wales.
Sunday is set to be slightly more promising, with showers again expected across the nation but longer dry, bright spells moving in.
Forecasters have said northern Scotland and Northern Ireland are likely to see the best of the sunshine on Sunday.
