Other facts from our historical weather data: Which months have the greatest rainfall in Danville? Most rainfall (rainy season) is seen in April and July. Which is the warmest month in Danville? August has an average maximum temperature of 30°C (86°F) and is the warmest month of the year. Which is the coldest month in Danville? The coldest month is January with an average maximum temperature of 5°C (41°F). Which is the wettest month in Danville? July tops the wettest month list with 155mm (6.1 in) of rainfall. Which is the driest month in Danville? August is the driest month with 78mm (3.1 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.