Saturday
A fine day for many places. Remnants of overnight rain leaves local light showers mainly in the northwest early morning, but fading. Some patchy cloud, a veil of high cloud for periods, but also sunny spells. Northwest Scotland holds onto cloud near to coasts and an odd light shower. West to southwesterly breezes in northern areas, tending to lessen. Light winds for central and southern areas. Coastal sea breezes. Highs 24 to 28C central-southeast areas, 17 to 20C north and west.

Saturday night
Generally dry into the evening and night. Some varied high cloud across the Midlands and southern England. Clearer skies for northern England and northwest Wales. Patchy cloud in western Scotland, clearer to the east. Broken cloud and clear spells for Ireland. Light and variable winds overall. Lows dipping away to a fresh 7 to 9C for Scotland, Ireland, northern England and Wales, local 5C in the Highlands. A more humid 12 to 16C for central-southeastern areas.

Sunday
High pressure sits over the country on Sunday allowing for a largely dry and fine day. Variable high cloud across England and Wales, locally may thicken into afternoon to produce an isolated showery burst of rain. A weak front could bring thicker cloud and patchy rain into far western counties of Ireland later. Light and variable winds. Feeling humid in the south. Highs to 30C in the southern English counties, 24 to 27C Midlands, 20 to 23C north and west, 17C across western Scotland.

Monday
Monday will be a very warm and humid day. Many places stay dry throughout, but some thunderstorms are expected to develop. The greatest risk is for the Midlands, but more widely across England and Wales has a chance of some storms. Local torrential downpours in places with hail and frequent lightning. Scotland is likely to remain cloudier and cooler, with patchy rain and drizzle. Ireland is largely dry with high cloud. Highs 21 to 24C north and west, but 28 to 32C Midlands and south.