Friday
A front will make slow progress into western regions, bringing outbreaks of rain to the south-west of Britain, and also much of Ireland - pushing gradually north-east. Much of Britain stays dry, apart from local drizzle or a light snow flurry. Cloudy and cold, perhaps a little sun breaking through, best toward northern Scotland. A chilly south-easterly breeze. Just 3 to 6C in the north & east, 7 or 8C in the south-west.

Friday night
Areas of rain will spread erratically north-eastwards across the country through the night, most persistent in western areas. Generally cloudy skies. Winds mostly light, although a fresh breeze affects coasts in the east & south-east. Temperatures not changing much from the daytime, staying around 3 to 6C, highest in the south, but where skies stay clear in the north, a frost is possible, with lows 0 to -2C.

Saturday
Patchy rain in the morning moves north-eastwards, slowly clearing into the North Sea, allowing brighter spells to develop for a time across central regions. Some sunshine may break through. Showery rain then develops from the south-west, locally turning persistent in the afternoon. Rain spreads into central-southern counties by evening. A south-westerly breeze. Temperatures 5 to 10C, mildest in the south-west.

Sunday
Fronts moving eastwards across Britain bring cloudy skies and outbreaks of rain or drizzle. Some uncertainty about local detail, but areas toward the north-east should stay driest and brightest of all, perhaps with a good deal of sunshine. A south-westerly breeze brings milder air to southern Britain, up to 10C or higher. Cooler in Scotland and northern England, around 5 to 8C.