Tuesday
Low pressure and fronts to the northwest, rain affects across Scotland and Northern Ireland much of the day, heaviest and most persistent in western Scotland, patchier to the east. Drizzly rain affects northwest England, a little drizzle on the hills of west Wales. Largely dry for central, south and eastern England with broken cloud and sun. Southwesterly breezes, strongest in the north. Highs 28 to 33C, warmest southeast, 24 to 27C Wales & north England, 22C Northern Ireland, 16 to 22C Scotland.

Tuesday night
Showery rain affecting much of Scotland into northern England through the evening and overnight. Heavy showers also affecting far western regions of Ireland and Northern Ireland. Drizzle also affecting westrn regions of Wales. Elsewhere will be dry with clear spells. A mild night with lows at 14 to 18C.
 

Wednesday
A very hot Wednesday across England into eastern Wales with sunshine and hazy high cloud. A chance of an isolated thunderstorm later afternoon into evening. A frontal zone over Scotland and Northern Ireland brings outbreaks of rain, some heavy and thundery in places. Mostly light winds, but some gusty southwesterlies in the west. Temperatures climbing into the 30s for much of England and east Wales, highs of 34 to 37C in central, east and southeastern counties. 18 to 23C Scotland and Ireland.

Thursday
Thursday sees outbreaks of rain affect much of Scotland, heavy bursts within some blustery winds across northern regions here. Showery lighter rain through the Borders into northern England as well as northwest Wales. Scattered showers affecting western coasts of Ireland too. Some showers, locally heavy and potentially thundery, pushing through the Midlands into East Anglia. Otherwise sunny spells and dry conditions. A little cooler with westerly breezes though still very warm across southeast England with highs here reaching up to 29C. Highs 18 to 22C further north and 24 to 27C central areas.