Warm air in place across England and Wales will set the stage for thundery rain on Monday as a fast-moving storm system crosses the United Kingdom.
A period of moderate to heavy rain will fall across the southwest of England in the morning, spreading northeast through the midday and afternoon hours. Rainfall of 25 mm (1 inch) is possible within 6 hours leading to some localized flash flooding.
Greater London is expected to miss out on this heavy rainfall, however thundery showers are possible throughout the day.
Despite the rain, temperatures will be seasonable with a high of around 23 C (74 F) in London on Monday.
This storm will quickly exit to the northeast on Monday night as high pressure builds in from the Atlantic.
Largely dry weather will prevail across the United Kingdom on Tuesday with broken cloud and sunny periods across Wales and England.
Isolated showers will occur across Scotland, though most of the day will be dry with mostly cloudy skies.
High pressure will remain in control on Wednesday resulting in another largely dry day. The exception will be southwest England where a thundery rain will arrive from the south during the afternoon.