Saturday
A ridge of high pressure building across southern parts of Ireland and the UK today. There will be some warm spells of sunshine this morning although bits of fog may affect southern and western coasts and hills, these drifting in and out through the day. Cloud and drizzle for northwest Scotland as fronts pass by here and rather cloudy in the north and west of Scotland to, although sunny spells to the east and south. Highs at a very warm 28 or 29C in southern England, 23C in Ireland and eastern Scotland, 15C in the coud over western Scotland. Sea breezes developing around many coasts.

Saturday Night
Clear skies for many overnight. Mist and fog patches again drifting onto coasts and hills, mainly in the south and west, although around the coasts of East Anglia too. Cloud and periods of drizzle or patchy rain affecting northwest Scotland and northwest Ireland, but the east of Ireland and Scotland should stay dry with clear spells. Lows at 11 to 16C.
 

Sunday
High pressure remains over southern England on Sunday. Mist and fog patches again drifting in and out of coasts. Generally a fine day with lots of sunshine across England, Wales and southern Ireland. Weak fronts passing south across Ireland and into northern England and Northern Ireland. These bring some patchy outbreaks of rain with it, although most of it being light. Sea breezes triggering some thundery showers in southeast England later. Widely very warm with highs at 28 or 29C in southeast England, a fresher 15C in northern Scotland.

Monday
Weak fronts continue to affect Scotland and Northern Ireland on Monday. These give a few outbreaks of rain, most in the west. England, Wales and southern Ireland will be brighter with some sunny spells, although it is possible that some thundery showers may affect Wales, central and southern England although confidence in this is low. Another very warm day at 29C in southern England, 12C in northern Scotland.