Other facts from our historical weather data: Which is the warmest month in Mohill? 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 Mohill? The coldest month is February with an average maximum temperature of 9°C (48°F). Which is the wettest month in Mohill? August tops the wettest month list with 105mm (4.1 in) of rainfall. Which is the driest month in Mohill? March 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.