Overview
- Forecasters say temperatures will fall further and be lowest between Tuesday and Thursday, with Wednesday likely the coldest day.
- Météo‑France expects slightly below‑normal daytime highs and much colder nights with widespread light morning frosts and clear, dry conditions for many regions.
- Meteorologists link the change to a sudden stratospheric warming that has weakened the polar vortex and allowed Arctic air to move south.
- A Gulf of Lion depression will bring renewed rain and unsettled weather to the Mediterranean coast and Languedoc while the north and east stay cooler and drier.
- Forecasters warn the episode is early and weaker than a mid‑winter outbreak but say persistence of the disturbance could spread cooler conditions into mid‑November and December and will make the bise wind feel colder for people on the ground.