Other facts from our historical weather data: Which months have the greatest rainfall in Cogne? Most rainfall (rainy season) is seen in May and June. Which is the warmest month in Cogne? July has an average maximum temperature of 18°C (64°F) and is the warmest month of the year. Which is the coldest month in Cogne? The coldest month is January with an average maximum temperature of -3°C (27°F). Which is the wettest month in Cogne? June tops the wettest month list with 157mm (6.2 in) of rainfall. Which is the driest month in Cogne? February is the driest month with 88mm (3.5 in) of precipitation. Which is the sunniest month in Cogne? July is the sunniest month with an average of 275 hours of sunshine. 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.