Prior to Friday, the previous record was 44.1 degrees Celsius, which was also logged in southern France during a heatwave in August 2003 that killed thousands of people.
France isn't alone. A potent heat wave has settled over Europe this week, with a nexus of weather and climate conditions producing record temperatures.
France's weather service raised the heatwave alert level from orange to red and has closed hundreds of schools this week.
France has recorded its highest temperature since records began at 44.3 Celsius in Carpentras, Provence.
"In terms of the time of year and spatial pattern of warmth, the ongoing event in Europe is quite similar to the 2015 European heatwave, which most severely affected southern and central Europe, which set the all-time temperature records for Germany and Switzerland", Day said, adding that we will need to wait until after the peak of this event to really know how severe it has been.
Around 350 firemen with the help of 15 aircraft and helicopters are working to control a wildfire which has burned around 4,000 hectares of land in the region of Tarragona, northeastern Spain, on Thursday morning.More news: Aditya Pancholi Booked For Rape By Mumbai Cops
As some accuse the French government of going overboard with its reaction to the heatwave, prime minister Edouard Philippe said: "This heatwave is exceptional by its intensity and its earliness".
Forecasters say the heat will continue through the weekend and into early next week.
Heat waves - which kill more people than any other extreme weather event - will nearly certainly keep getting worse, everywhere.
According to NOAA's natural hazard statistics, Berardelli said extreme heat causes more deaths per year in United States than any other weather hazard.
The heat has caused unsafe conditions all across Europe and has been blamed for at least two deaths in Spain.
High winds and low humidity fanned the flames while temperatures climbed to over 30 degrees Celsius (86 degrees Fahrenheit).More news: Fortnite clocks locations: where to visit different clocks across the map
Mr Buch said authorities suspected the cause of the outbreak was a deposit of improperly stored chicken manure at a farm in the village of Torre de l'Espanyol which high temperatures caused to combust.
Four people have drowned so far in France this week, and a 12-year-old girl drowned in a river near Manchester, England.
France has also seen an uptick in so-called street-pooling, or illegally opening fire hydrants. A six-year-old child is in life-threatening condition after being hit by water shooting from a cracked-open fire hydrant in the Paris suburb of Saint-Denis, broadcaster France-Info reported.
The firefighters said the blaze is one of the worst in Catalonia in the last 20 years.
In Berlin, a police unit turned water cannons - usually used against rioters - on city trees, to cool them down.More news: Apex Legends Season 2 trailers confirm major map change