Friday has been the hottest day of the year in the UK so far, with a temperature of 31.2C (88F) recorded at Heathrow Airport.
The Met Office said the temperature today could increase and it is likely to remain very warm overnight.
The previous record high for 2024 was 30.5C (87F) in Wisley, Surrey, on June 26.
However, temperatures will start to lower over the weekend and there is the possibility of thunderstorms overnight into Saturday.
Saturday’s highest temperature is expected to be 28 or 29C, with the warmest spells likely to be seen in the east and South East of England.
The Met Office said: “We could see some very heavy bursts of rain as the day (Saturday) progresses, with the potential for thunderstorms in eastern England on Saturday afternoon into evening.
“Some heavy rainfall in narrow corridors across the north-western half of the UK is also likely on Saturday night into early Sunday.”
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