The Met Office has issued a yellow weather warning for heavy rain in Lincolnshire on Friday and Saturday.
They warn that “persistent” rain may lead to a risk of localised flooding.
Eddy Carroll, Chief Forecaster at the Met Office, said: “We’ll see a big change for the weekend. From Friday we will see widespread rain across many parts. The public are advised to keep up to date with our forecasts and warnings.”
Bands of rain will become slow-moving across parts of the UK on Friday and Saturday.
“Some locally heavy and persistent rainfall is expected, particularly across Wales and parts of England.
“This may cause some flooding from rivers or surface water. There is still significant uncertainty as to where and when the heaviest rainfall and greatest impacts will occur, so this alert will be updated,” they added.
The warning comes into force just after midnight tonight (Thursday/Friday) and is expected to stay in place for 48 hours.
Meanwhile, residents on the coast are making the most of soaring temperatures ahead of the rainfall.
In Skegness this morning (Thursday), the sun was shining and the sea almost mill-pond still in a light to non-existent breeze.
The mercury is already above 20C, and temperatures are forecast to rise to as high as 30C in parts of the country today.
And, although heavy rain is forecast into the weekend, it is not expected to hit everywhere. The Met Office says some places may even see some bright and sunny spells, especially in the south and south east.