Other facts from our historical weather data: Which is the warmest month in Mineralwells? 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 Mineralwells? The coldest month is February with an average maximum temperature of 4°C (39°F). Which is the wettest month in Mineralwells? July tops the wettest month list with 134mm (5.3 in) of rainfall. Which is the driest month in Mineralwells? November is the driest month with 68mm (2.7 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.