The Met Office has forecast heavy rainfall for 45 areas across the UK on Friday, October 16, with weather maps showing a thick band of rain moving across the country.
The showers will begin in the morning, with the main rain band shifting eastwards from southwest England and Wales towards central and eastern England between 7am and 5pm.
Rain band moves eastwards
At 7am, the majority of the rain is expected to be concentrated across parts of southwest England and Wales, extending northeast towards northwest England. Scattered showers are also forecast for western Scotland.
The southwest of England is expected to see the most of the downpours, with Cornwall covered by deep blue colours on the map in the morning. Further north, including Greater Manchester, lighter rain is predicted.
The main rain band stretches from southwest England through Wales and northwest England, with heavier rain hitting the Lincoln area at 11am.
Afternoon showers and cooler temperatures
By midday, more rain is expected in the midlands. By the afternoon, the south is also predicted to see showers.
At 5pm, the band continues to shift eastwards across England, with rain hitting parts of central and eastern England. Showers will still be scattered across Scotland, Northern Ireland and western coastal areas.
London and surrounding counties, including Kent, Essex and Surrey, are forecast rain this afternoon. The day is also expected to be cooler than the current conditions.
All areas forecast rain on Friday
Scotland: Argyll and Bute, Caithness, Highlands, Isle of Skye, Outer Hebrides, Orkney, Shetland, Sutherland.
Northern Ireland: County Antrim, County Fermanagh, County Londonderry, County Tyrone, Belfast.
Wales: Carmarthenshire, Ceredigion, Conwy, Gwynedd, Pembrokeshire, Powys, Cardiff.
England: Cheshire, Cumbria, Greater Manchester, Lancashire, Merseyside, Manchester, Lake District, Devon, Cornwall, Somerset, Dorset, Wiltshire, Hampshire, Gloucestershire, Bristol, Buckinghamshire, Oxfordshire, Surrey, Kent, East Sussex, West Sussex, Greater London, Isle of Wight, Plymouth, Berkshire.
The Met Office forecast says: "A few showers are possible, mainly the far north and south. Much cooler than of late."