Other facts from our historical weather data: Which is the warmest month in Sweet Springs? July has an average maximum temperature of 31°C (88°F) and is the warmest month of the year. Which is the coldest month in Sweet Springs? The coldest month is January with an average maximum temperature of 4°C (39°F). Which is the wettest month in Sweet Springs? May tops the wettest month list with 133mm (5.2 in) of rainfall. Which is the driest month in Sweet Springs? January is the driest month with 28mm (1.1 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.