Other facts from our historical weather data: Which is the warmest month in Castelnovo di Sotto? July has an average maximum temperature of 32°C (90°F) and is the warmest month of the year. Which is the coldest month in Castelnovo di Sotto? The coldest month is January with an average maximum temperature of 9°C (48°F). Which is the wettest month in Castelnovo di Sotto? November tops the wettest month list with 94mm (3.7 in) of rainfall. Which is the driest month in Castelnovo di Sotto? July is the driest month with 53mm (2.1 in) of precipitation. Which is the sunniest month in Castelnovo di Sotto? July is the sunniest month with an average of 292 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.