We will be cycling in early June from Toblach. What kind of temperatures can we expect?
www.weather.com has averages by month for the bigger Italian cities/towns. If you get the average in June for a sea level city such as Venice, subtract approx 3.5 degrees F for every 1000 feet of elevation gain in the Dolomites. That will allow for elevation but of course not for any wind that might be in the mountains.