Saturday
With low pressure just to the southwest of Ireland on Saturday bands of rain will push northwards up the country. Heavy and persistent rainfall is expected across parts of Ireland, Northern Ireland, southwestern parts of Scotland. Patchy rain, locally heavy and thundery, move across northern England into the Midlands and eastern areas of England. Many southern and central areas of England as well as east Wales stay mostly dry and will feel warm in any sunny spells here. Highs up to 25 or 26C in the east and southeast, 18 to 22C elsewhere, cooler still in the far west.

Saturday Night
Overnight, locally heavy and thundery rain continues to track northwards into northern England and southern Scotland, while more persistent rain affects many regions of Ireland, Northern Ireland pushing into to west Wales and southwest England. Drier elsewhere though rather cloudy. Lows at 11 to 16C.
 

Sunday
Low pressure sits to the southwest of the country on Sunday sweeping associated rain bands northwards. Much of the rain will clear Ireland and Northern Ireland first thing, seeing drier and brighter weather here, and move in and across Scotland, heavy for some though clearing southern areas here by the afternoon. A separate band of rain will fragment while pushing eastwards across England and Wales, though many regions here not seeing much if any rain at all. Another warm day for many with highs at 19 to 26C.

Monday
Low pressure continues to circulate just to the southwest of Ireland on Monday. Heavy, thundery showers as well as longer spells of rain with blustery winds will affect much of Ireland and Northern Ireland across much of England and Wales before clearing here and moving into Scotland in the afternoon. Highs at 19 to 25C.