A high pressure ridge stretches from the Atlantic to central Europe and allows dry conditions to persist over the country.
The morning of Thursday September 23 will be marked by fog in the North and Center-East.
Morning temperatures will range from 3 to 9 degrees in the northern two thirds and 10 and up to 19 degrees in Corsica.
The afternoon will be cleared up and temperatures will vary between 18 and 26 degrees throughout the territory.
Regions by regions
From Brittany to Hauts-de-France, via Normandy, low clouds, mists and mists are numerous in the morning.
Over the hours, the thinnings develop.
The morning freshness is still quite marked with only 4 to 11 ° C and the maximums are stationary with 17 to 22 ° C.
From the Pays de la Loire to the Grand-Est, via Île-de-France, the morning will also be marked by some mists and mists locally.
The sun will set in quickly and the morning freshness will give way to summer temperatures.
The minimums vary from 3 to 10 ° C and the maximums from 19 to 25 ° C.
In the plains and valleys of Bourgogne-Franche-Comté, Auvergne-Rhône-Alpes and Center-Val de Loire, morning fogs are frequent, while in the mountains the sun will already be present.
The minimums are low with 3 to 9 ° C, and the higher maximums with 19 to 26 ° C.
The sky will be clear in PACA and Corsica.
A simple cloudy veil will be installed in the Rhône valley and in the Bouches-du-Rhône.
The minimums are higher than in the rest of the country with 14 to 20 ° C and the maximums between 24 and 28 ° C.
In Occitanie and New Aquitaine, some fog is possible in the morning in the Garonne valley and the Basque Country.
The minimums are between 11 and 17 ° C and the maximums between 22 and 27 ° C.