The Met Office has issued a Yellow warning for rain this week, after the UK enjoyed scorching temperatures.
There are thunderstorms expected in much of England, Wales and Scotland, with risk of torrential downpours.
After several deaths as people try to avoid the heat - a look at why swimming in quarries and open water is so dangerous.
Heatwave health warnings were issued today as the Met Office declared it was the hottest day of the year so far.
Why cucumbers really are cool and you should keep your phone in the shade to prolong battery life and other fun facts about the heat.