The Met Office has said that tomorrow could be the hottest day ever on record in Britain.
That would break the previous record of 38.5°C, recorded at Faversham in Kent back in August 2003.
Public Health England and the Met Office issued a level three heatwave warning after temperatures soared yesterday.
Announcing the potentially record-breaking heat, the Met Office tweeted: "It's looking likely that we could reach 39°C somewhere in southern and eastern England on Thursday.
"The hottest temperature ever recorded in the UK is 38.5°C.
"There is currently a 60% chance we could break this on Thursday, depending on the amount of cloud."
Whilst it is nice to see some sunny, summery weather for a change, the Met Office also said that it is important to stay safe in the sun.
That includes trying to catch a bit of shade, drinking plenty of water and - of course - wearing sunscreen.
The Met Office chief meteorologist Frank Saunders said: "There is a real possibility of records being broken this week, not only for July but also all-time records.
"The weather setup is broadly similar to the pattern that brought high temperatures to much of continental Europe at the end of June.
"The difference this time is that the wind flow will be more directly from France, paving the way for some exceptional, perhaps record-breaking temperatures.
"As well as high temperatures during the day, overnight temperatures will also be notably warm and could also break records.
"Conditions will feel much more comfortable for western parts of the UK by the time we get to Friday."
Of course, this weather would hit right in the middle of the week while everyone is in work, wouldn't it?
Ahead of the potentially historic heat tomorrow, the UK is set to experience some heavy thunderstorms today. A separate Met Office alert states: "Although some places will miss the thunderstorms altogether, where they do occur there is the potential for frequent lightning, hail and gusty winds, as well as sudden downpours in a few places."
This is all because a weather front is being pushed up towards the UK from Africa, where it is famously fairly warm.
With high pressure in control of the weather systems, the hot air is being shoved up from the African continent, then travelling all the way through Europe on the way up to us.
For most of us, it'll be lovely. Just stay safe and remember to drink water, not just cider.