Other facts from our historical weather data: When is winter in Grandes-Bergeronnes? The coldest season / winter is in the following months: January, February, March and December. Which is the warmest month in Grandes-Bergeronnes? July has an average maximum temperature of 19°C (66°F) and is the warmest month of the year. Which is the coldest month in Grandes-Bergeronnes? The coldest month is January with an average maximum temperature of -7°C (19°F). Which is the wettest month in Grandes-Bergeronnes? October tops the wettest month list with 133mm (5.2 in) of rainfall. Which is the driest month in Grandes-Bergeronnes? February is the driest month with 73mm (2.9 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.