Moist air masses will temporarily move into the Alpine region from the south-west.
A mix of clouds and sunny spells is expected in the morning, with a few scattered showers. In the afternoon, thundery showers will become more widespread across the region.
The maximum temperatures will range from 23° to 29°.
Getting hotter
Tuesday will be very sunny, with clear skies for most of the day.
Wednesday will also start off sunny. Any local patches of low cloud or fog will clear quickly, but the chance of isolated thunderstorms will increase during the afternoon.
Thursday will bring plenty of sunshine and stable conditions, with hot temperatures.
Friday will remain sunny and very hot, with the risk of heat thunderstorms developing towards the evening.
Moist air masses will temporarily move into the Alpine region from the south-west.