Friday
Low pressure will circulate near Iceland on Friday, while higher pressure builds northwards from the Atlantic. A weak cold front will move southeast across the country, initially bringing cloudier skies and some patchy rain to Scotland before clearing and pushing into northern England and Wales. By the time it reaches these areas, however, little rain is expected to remain. Meanwhile showers will continually affect northwest Scotland as well as parts of Northern Ireland. Elsewhere should stay largely dry with sunny spells. It will remain very hot across England and Wales, with temperatures reaching 27 to 34°C. Further north and west, highs will be slightly lower at around 20 to 25°C.

Friday Night
Patchy rain will tend to linger across Lincolnshire and some regions of East Anglia overnight. Some of the rain could be prolonged heading into Friday morning. One or two showers affecting northwest Wales with scattered showers still expected to affect northwest Scotland. Lows 14 to 20C in the south and a fresher 9 to 13C further north.
 

Saturday
Showers as well as longer spells of rain still to affect East Anglia and southeast England through Saturday morning before eventually easing back here. Showery rain across northern Scotland. Otherwise a dry day with sunny spells as higher pressure remains largely dominant. Highs at 28 or 29C in southeast England, 20 to 26C for most through England and Wales, 18 to 21C through Scotland and Ireland.

Sunday
High pressure, albeit weak, is still over the country on Sunday allowing for a mostly dry and fine day with sunny spells. Most places will remain dry though there are a few showers about, these mainly across northern Scotland, one or two through central England and East Anglia. Highs at 26C in southern England, 20 to 24C across northern and central England, 20C in Ireland, 19C in Scotland.