The Met Office has issued a yellow weather warning for London and the South East.
The warning - for wind - was issued shortly after 10am on Friday morning (May 29) as gusts of 50-60mph were predicted in some parts of the country.
London was included in the warning as well as counties in the South East and East Anglia.
The warning said: "A narrow band of heavy rain will be accompanied by squally winds as it moves east across southern and southeastern parts of England over the next few hours.
"Gusts of 50-60mph are possible in places.
"The public are advised to take extra care due to the localised squally winds and heavy rain."
The weather will put a dampen on the last day of the school half-term and is likely to affect families' plans for the weekend.
The Met Office's chief forecaster said: "An active cold front will move quickly east across England today, bringing a short spell of heavy rain and squally winds to more southern and southeastern parts of England."
The weather warning is expected to remain in place until 3pm on Friday.
Saturday and Sunday are also forecast to be cloudy with showers.