Temperatures are expected to soar in parts of the UK in the next few days, weather experts have warned.
Experts from the Department of Health have advised people - especially the young and old - to make sure they drink a lot and avoid getting too hot.
South England, the Midlands and East Anglia are expected to stay really hot, but in the north it's been different.
Storms on Sunday in Manchester closed two lanes of a motorway and diverted the returning England's team's plane.
Drink lots of water
Stay indoors in the hottest part of the day
Put on lots of suntan lotion if you're outside
The government has said that anyone who is worried about their health during the mini heatwave should speak to a doctor or pharmacist.
Symptoms of heat stroke include feeling dizzy and sick and headaches.
The very hot weather is expected to last until the middle of next week.