The Met Office has issued a yellow weather warning for thunderstorms and heavy rain on Bank Holiday Monday.
The weather warnings are in place for central, Wales and southern Scotland and there could be flooding that could lead to travel disruption.
Met Office forecaster Craig Snell said, “On Tuesday much of the UK should be dry with a mixture of cloud and sunshine, though probably cloudiest across Scotland.
“Going beyond Tuesday there will be much drier weather for much of the UK and it improves apart from the very far north and Northern Ireland.
“Away from those areas it is generally a dry picture going towards the weekend and on Friday into Saturday we are likely to see temperatures climb probably to 23C or 24C in the south.
“There will be quite warm temperatures for much of the UK, above where they should be for the time of year.
“It will not be wall-to-wall sunshine but the weather will be much more settled.”
