Friday
A westerly flow on Friday with windy conditions for a time across Scotland, Northern Ireland into northern parts of England. Patchy light rain affecting western coasts and hills here but mainly dry elsewhere. Less windy further south where it will be mainly dry with plenty of sunnny spells about. Highs at a warm 21 to 24C across central and southern England, elsewhere at 16 to 21C, cooler still across NW Scotland.

Friday night
Overnight, it will remain mostly dry across much of England and Wales, although staying largely cloudy. Rain moves into western Scotland with a strengthening breeze developing here again. A cloudy night across eastern Scotland and Ireland. Mild for most with lows between 10 and 15C, cooler across northern Scotland.
 

Saturday
A largely dry but cloudy day for England and Wales, although feeling rather muggy with the milder southerly breeze. Rather cloudy but a few breaks in the cloud are possible during the afternoon though with the risk of one or two showers in the west here. Mostly dry for Scotland once rain clears the far north. Patchy rain moving across Ireland but plenty of dry periods here too although rather cloudy. Highs of 20 to 23C across England, Wales and much of Ireland. Cooler across northwest England and Scotland, 13 to 17C here.

Sunday
A front will bring some rain through western Scotland, Ireland and Northern Ireland on Sunday. Strengthening winds here. Largely dry for England, Wales and much of the rest of Scotland, although breezy here, yet a fair amount of cloud with the risk of some showers developing. Breaks in the cloud across central and eastern areas allowing for some bright or sunny spells to develop as the day progresses. Warm again in England, Wales and east Scotland at 20 to 23C, cooler elsewhere with highs at 15 to 18C.