This Tuesday, sunny weather with however higher altitude sails, more numerous and extended in the afternoon. Development of cumulus clouds in the mountains and some showers and storms at the end of the day in the hills with a local risk of overflowing into the Rhône valley, particularly in the Upper Valais. Hot and summer temperatures during the day. Predicted temperatures in the Rhône plain: lows 14 to 18°, highs 27 to 29°from Chablais to Central Valais. In stations around 1500m: lows 10 to 12°, highs 21 to 22°. On tops: 10/18° to 2000m, 4/7° to 3000m. A regime of breezes in valleys during the day and weak to moderate south-west in high mountains. (MeteoNews, 18 June, 6.00 am)
Trends for the weekend
Weekend in Valais
The weekend of June 22-23 should be a summer one in the canton. A few showers could linger on Saturday, before a warmer and sunnier Sunday. To be confirmed.