Les Attelas

This Wednesday, sunny weather in all regions. Development of cumulus clouds over the mountains and some isolated showers and thunderstorms at the end of the day. Temperatures remaining very hot at all altitudes. Temperatures forecasted in the Rhône plain: minimums 16 to 20°, maximums 34 to 35°. In the resorts at around 1500m: minimums 14 to 16°, maximums 27 to 29°. On the peaks: 16/23° at 2000m, 8/14° at 3000m. Zero-degree isotherm: 4400 m. Light to moderate breeze during the day in the Rhône plain. Moderate northeast wind in high mountain areas.

Thursday will be another scorching day with extreme heat. Few or no clouds, with cumulus clouds forming over the mountains during the day. Few thunderstorms in the mountains. Highs of 34 to 35 degrees in the lowlands, 30 degrees at 1,000 meters, and 28 degrees at 1,500 meters. Friday will bring sweltering heat, with temperatures ranging from 34 to 36 degrees or even higher, and mostly sunny skies except for some developing cumulus clouds over the mountains. There will still be a low risk of scattered thunderstorms, limited to the highest Alpine ranges only. On Saturday and Sunday, the weather will remain sunny and very hot, with highs of 35 to 37 degrees in the plains and 30 to 32 degrees at around 1,000 meters in elevation. Thunderstorm activity will become more noticeable as the days go by, with more frequent thunderstorms, though they will still be largely confined to the mountains. A period of exceptionally intense heat with an increasingly worrying water shortage. This spell of exceptional heat is expected to end early next week, with more widespread and/or severe thunderstorms. Temperatures will drop.