Other facts from our historical weather data: Which months have the greatest rainfall in Passo del Tonale? Most rainfall (rainy season) is seen in June and July. Which is the warmest month in Passo del Tonale? July has an average maximum temperature of 17°C (63°F) and is the warmest month of the year. Which is the coldest month in Passo del Tonale? The coldest month is January with an average maximum temperature of -4°C (25°F). Which is the wettest month in Passo del Tonale? June tops the wettest month list with 174mm (6.9 in) of rainfall. Which is the driest month in Passo del Tonale? January is the driest month with 55mm (2.2 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.