There are around 300 days of sunshine in South Tyrol. That in itself is a good forecast. If you want to know what the weather will be really like, just follow the local weather forecast.
Particularly interesting is the precipitation forecast for Val Gardena created by MeteoSwiss. Source of the data is the numerical weather prediction model COSMO-1 of MeteoSwiss. The special feature of this product is the high spatial resolution of 1.1 km. The graphics shows the forecast for precipitation in the next 24 hours and the data is calculated and updated three times daily: 6.35 am, 12.35 pm and 6.30 pm. The precipitation forecast is created automatically and can therefore deviate from our official weather forecast.