Other facts from our historical weather data: Which months have the greatest rainfall in Garden? Most rainfall (rainy season) is seen in January and December. Which is the warmest month in Garden? July has an average maximum temperature of 15°C (59°F) and is the warmest month of the year. Which is the coldest month in Garden? The coldest month is February with an average maximum temperature of -4°C (25°F). Which is the wettest month in Garden? January tops the wettest month list with 169mm (6.7 in) of rainfall. Which is the driest month in Garden? May is the driest month with 83mm (3.3 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.