Yellow Weather Warnings have been issued for thunderstorms by the Met Office, as a plume of warm air will raise temperatures and increase the risk of thundery showers.
The area of high pressure which has been responsible for the last couple of weeks of settled weather for much of the UK will drift away towards Scandinavia, allowing a plume of warmer, humid air from the south to influence the weekend weather for much of the UK.
Temperatures will begin to climb from Friday as the warmer air pushes in from the south, bringing with it the chance of some evening and overnight showers in the southwest of England and southern Wales.
