Thunderstorms have started to break out over eastern parts of Norfolk, Suffolk and Essex.
The Met Office has a yellow weather alert in force warning of torrential thundery downpours in places with the risk of surface water flooding. There's also the possibility of hail and strong gusts of wind.
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Saturday will be cloudy with a few light showers. Sunny again on Sunday but with a cold wind.
The weather stays fine with long spells of sunshine
It may have been a dry and sunny end to September but it was a chilly month - the coldest in the Anglia region for more than two decades.