Bank Holiday Monday threatens changeable weather, with experts warning Brits to bring a brolly as sunny spells will be pockmarked with rain.
Most of Britain will experience a mix of sunny spells and scattered showers over the bank holiday, but yellow weather warnings have been issued in Scotland.
The With office has issued a yellow thunderstorm warning for northern and eastern parts of mainland Scotland from 11am to 10pm on Monday, with 30mm to 40mm of rain and disruption possible in local areas.
The Outer Hebrides and the Isle of Skye are under a separate rain warning from midnight to 9am, but it is not expected to be as heavy.
It comes after large parts of the country saw slow showers and thunderstorms throughout Sunday following heavy rain earlier this week.
Local flooding in the village of Wynard, Durham, left residents wading through thigh-high water on Sunday
Early clear skies will give way to showers and even thunderstorms in parts of Britain later today (Photo: Cyclists in Oxfordshire on Monday morning)
A thunderstorm warning is in effect for much of northern Scotland from 11am to 10pm on Monday
But the glorious sunshine and temperatures seen across much of the UK on Sunday are not expected to last until Bank Holiday Monday.
There are 26 flood warnings across England, mainly in the south, although residents of County Durham have also been warned of a risk of flooding.
Footage taken on Sunday showed residents wading in thigh-high water near the village of Wynyard.
Residents in affected areas have been warned to avoid using low lying footpaths and bridges near local watercourses.
They have also been told not to attempt to walk or drive through floodwaters.
On Monday, the hottest places in Britain are forecast to be the eastern and north-eastern parts of England with highs of 19 degrees Celsius, while southern regions are expected to reach just 17 degrees Celsius.
Greg Dewhurst, meteorologist at the Met Office, said: 'There are some subtle differences – I think England and Wales will generally see less frequent and less heavy showers compared to Sunday, so there should be some longer, drier spells in between .
The Environment Agency has issued 26 flood warnings for Monday, mainly in the south of England, especially between London and Bristol
The mercury in St James's Park (pictured), central London, rose above 20 degrees this weekend
Dorset's Lyme Regis basked in sunshine on Sunday, while less than 30 miles away almost a third of a month's worth of rain fell in the space of an hour
'But it's worth taking a brolly and a raincoat if people are heading out as there's a chance of a shower almost everywhere. Northern Ireland actually too.'
Temperatures will be around average for this time of year, ranging from 17°C to 19°C across Britain, but it will still feel 'on the chilly side' under any cloud or rain.
Heavier cloud is expected to move across south-west England towards the end of the day with a chance of patchy rain, but any lingering showers should dissipate during the evening.
The month so far has been wetter and duller than average, with 103 percent of normal rainfall for England and Wales – an average of 63.2mm (2.48 inches) – having fallen on Friday.
There had been just 137 hours of sunshine on Friday, 69 percent of the normal total for the whole of May, while this figure would normally be between 70 and 80 percent for the time of month.
The unsettled weather will continue over the next week, with showers and longer rain showers moving east tomorrow and more showers on Wednesday.