Parts of the UK were hit by severe thunderstorms on Friday with heavy rain causing flash flooding in north and west London.
Thermometers are set to rocket on Saturday with high pressure taking charge, bringing sweltering temperatures back to the UK.
The Met Office has claimed Britain could see highs of 31C on Sunday in southern parts of the country.
A tweet read: “You may have heard that it’s hotting up this weekend!”
The Met Office added: “High pressure remains in charge on Saturday. However, fronts will move into the northwest.
“Plenty of sunshine for many, though it will be cloudier with some rain in the northwest.
“Feeling very warm across much of the UK. Cooler and breezy in the northwest.”
Into Sunday the Met Office added: “A muggy night for many. Staying cloudy in the northwest.
“Rain likely for Scotland and Northern Ireland. Dry with plenty of sunshine elsewhere.
“Hot in the sunshine. Warm, despite more cloud in the northwest.”
The Met Office map showed temperatures in the south of England reaching 31C in the afternoon, with places in north east England reaching 26C.
Met Office spokesman Grahame Madge said: “High pressure will rebuild over the country this weekend with temperatures in the south expected to reach the high 20Cs on Saturday with the chance of 30C or 31C on Sunday and through next week.
“As well as home-grown heat, we expect warm air to be pulled up by Storm Chris as it barrels up towards Iceland. It means there will be some differences from the June heatwave which was the result of sustained high pressure over Britain.
“This warm air will be coming up from the Azores region to the south of the UK so it will feel more humid compared to the recent hot weather.
“We expect this pattern to continue through next week and although there are signs of the weather turning slightly more mobile, there is nothing to suggest any significant rain or cooler conditions in the longer-range forecasts.”
BBC’s Weather forecast for Saturday read: “Scotland and N Ireland will be mostly cloudy with rain edging into the west.
“Elsewhere it will be mainly fine with sunny spells. The odd shower is possible in the east, these may be locally heavy.”
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