Mountains
A high-pressure system and stable air masses will ensure summery conditions.
In the mountains, too, the weather will be mainly sunny. In the afternoon, cumulus clouds will form, with the possibility of a few thunderstorms, particularly in the Dolomites.
Mountainweather tomorrow
A high-pressure system will persist over the Alps, but with temporarily more unstable air masses.
Conditions will remain stable during the early part of the day. Visibility may be reduced locally by low cloud, and thunderstorms will move in from the west during the afternoon and into the evening.