The Météo France weather service heavy rain and flooding on Saturday night and Sunday in the Gard, Lozère, Hérault and Ardèche departments, as residents of the Gard cleared up the damage from 36 hours of violent storms.
Rail services between Nîmes and the town of Alès were still not running Saturday, after storms had overturned buses, blocked roads and cut off electricity to 4,000 homes.
Lightening started a number of fires and rescue services came to the aid of more than 500 people, Interior Minister Bernard Cazeneuve said on Saturday.
Up to 150mm of rain fell around Alès overnight.
Traffic was also disrupted in the Var, to the east, while in the Gers, to the west, two people - a 94-year-old reported to be a retired priest and a young man –died and five people were injured in traffic accidents.