Friday
High pressure to the southwest of Ireland brings a mostly dry day to much of southern Ireland, Wales and England. The best of the sunshine probably through the morning and across southern England. Isolated showers may develop over high ground of northern England, Wales and southern Ireland into this afternoon. More cloud over Scotland and northern parts of Ireland with some continued outbreaks of rain and showers here. Some brighter spells between the showers in northern Scotland where it will be breezy too. Highs at a muggy 26C in southern England, 13C in northern Scotland.

Friday Night
Rain and showers easing for most from Friday night into Saturday morning. Staying cloudier to the north with clearer skies to the south. Some light showers may flare up over parts of northern England and the Midlands through the wee hours. Overnight lows at 7 to 9C for Scotland and Northern Ireland, 10 to 10C for England, Ireland and Wales.
 

Saturday
A weak cold front is expected to be across southern parts of England on Saturday. High-pressure remains to the west of Ireland with low pressure to the east of England. A cool northwesterly flow affects all parts of the country. Cloudy over southern areas close to the front, with a few spots of rain here and there, but this fades quickly. Brighter to the north of the front with some sunshine, although showers affect northern Scotland and the high ground of northern England. Cooler for all. Highs at 22 to 23C in southern parts of England, but more widely 16 to 21C, just 11 to 13C in northern Scotland.

Sunday
A ridge of high pressure remains across the British Isles through Sunday. A more northwest to northerly flow brings a risk of rain in northern Scotland and of light, scattered showers for eastern parts of Scotland and England throughout the day. Fair for most other areas with broken cloud and sunny spells. Highs at 12 or 13C in northern Scotland, 20C in southern parts of England.