After a chilly start, Saturday will be another fine and dry day for most with plenty of sunshine. Increasing amounts of cloud will move in across the south of the UK with the possibility of some showers in the south of England for a time.

A more notable change to our weather moves in overnight on Saturday night and into Sunday. Showers and isolated thunderstorms are forecast to develop across parts of southern England on Saturday night. By Sunday morning, there is an increasing risk of more active and organised heavy showers and thunderstorms moving in to, or developing across, parts of southern England.

Thunderstorm warning issued

A Yellow severe weather warning for thunderstorms on Sunday has been issued for a swathe of England, fringing into eastern Wales. Although most places will miss them, and there remains a possibility that they fail to develop at all, if they do develop within this warning area 30 to 40mm of rain may fall in less than an hour with perhaps over 75mm in one or two places, leading to a chance of flooding and disruption.

Met Office Deputy Chief Meteorologist Dan Harris, said: “Through Saturday night and into Sunday we’ll see a gradual change in our weather across the UK with an increasing chance of heavy thundery showers developing, particularly across central parts of the UK. Should they develop there is the risk of some local disruption from intense rainfall, gusty winds, lightning and possibly hail too. Not everywhere within the warning area will see thunderstorms, and confidence in any individual location being affected remains extremely low at this time.

“The risk of thunderstorms steadily transfers northwards through Sunday afternoon and into the early evening. If you have plans for Sunday, I’d recommend keeping up to date with the Met Office forecast and any updates to the warnings.”

Weather next week

With high pressure moving away to the east through this weekend, our weather will continue to be more unsettled as we start next week, with spells of rain and showers in places and more cloudy conditions than of late.

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Thunderstorm cloud developing at the end of a day in London