Friday
Fronts trailing through central and southern England, Wales and southern Ireland on Friday will bring a wet day with periods of rain throughout. Brighter and cooler further north with sunny spells in Scotland, though heavy showers will affect western coasts and hills. Sunny spells and showers in much of Ireland, although staying cloudier in the far south with more rain here. Highs at a muggy 16 or 17°C in southeastern areas, but 11 to 15°C elsewhere.

Friday Night
Rain persists for the far south and southeast of England through the night from Friday into Saturday. A cloudy night for much of England and Wales too. Clearer skies over Ireland, Scotland and Northern Ireland though there will be showers at times, particularly to the west. Staying breezy with overnight lows at 5 to 7°C in the north and west, 9 to 11°C in the south and east.

Saturday
Pressure remains low through Saturday. Further cloud and rain in southern England and Wales, this becoming heavy at times. Drier, brighter and cooler in northern England, Scotland and much of Ireland, away from western coasts. Showers affecting western coasts and hills and northern parts of Scotland and Ireland, a few of them heavy. High temperatures at 11 to 15°C for most.
 

Sunday
A wet day on Sunday with low pressure over England. There will be heavy periods of rain passing northwards through England and Wales. Ireland, Northern Ireland and Scotland should be brighter in places although there will also be showers here. Temperatures at 10 to 14°C for most, 16 to 18°C to the southeast of England.