Saturday
Dry for most places with variable amounts of cloud and sunshine. Sunniest toward the east and southeast. High pressure stays to the southwest, whilst weak fronts move into the northwest, bringing thickening cloud and patches of rain or drizzle, most persistent in western Scotland. Light westerly winds and some local sea breezes. Top temperatures 15 to 18C in central and eastern regions, 11 to 14C in the west & northwest.

Saturday night
Low cloud will spill into west and northwestern parts of Britain and Ireland, with rain and drizzle becoming most persistent in western Scotland. Meanwhile, it stays dry for most of England and Wales, with clear skies focused toward the southeast. Generally milder than recent nights, with temperatures staying above freezing for all, lowest values typically 4 to 8C, locally a degree or so lower rurally.

Sunday
High pressure to the south of Britain keeps much of England & Wales dry, with sunshine and warmth best toward the south and east. Cloudier skies further northwest. A frontal system moves across Scotland and Ireland, giving dull and wet conditions for western coasts and hills. Patchy rain extends eastward across Scotland. Light southwesterly winds. Highs 17 to 21C in central and southern areas, but 10C or below in western Scotland.

Monday
Low pressure passing to the north of Scotland produces rain, drizzle and low cloud across northwestern Britain. Only small amounts of rain for most places, but persistent for many hours over western hills as far south as Wales. Generally dry for central and eastern regions of Britain, with a little sunshine breaking through, but mainly cloudy skies. Moderate southwesterly breezes. Highs 16 to 22C, warmest in southeast England.