In reply to davkeo:
This one for Dolomites
http://www.arpa.veneto.it/previsioni/it/html/meteo_dolomiti.php
This one further west and north
http://www.meteotrentino.it/default.aspx?ID=1
This one for still further northwest (nearer Brennero and Val Venosta)
http://www.provincia.bz.it/meteo/tempo-montagna.asp
ARPA met office is based in Arabba, right in the middle of the Dolomites. If there are fronts moving around then their forecasts are pretty accurate e.g. in winter.
In summer, it's often much more difficult for them to get it right as very often they're trying to forecast thunderstorms caused by instability and they're just dealing with probabilities as a percentage. Generally, if they're forecasting anything more than about 30% probability of summer thunderstorms then I don't climb mountain routes as I've been caught out too often in the past...
Post edited at 06:04