Other facts from our historical weather data: When is summer in Springfield?The hottest season / summer takes place in June, July, August and September. Which is the warmest month in Springfield? July has an average maximum temperature of 30°C (86°F) and is the warmest month of the year. Which is the coldest month in Springfield? The coldest month is February with an average maximum temperature of 2°C (36°F). Which is the wettest month in Springfield? June tops the wettest month list with 142mm (5.6 in) of rainfall. Which is the driest month in Springfield? January is the driest month with 45mm (1.8 in) of precipitation. Which is the sunniest month in Springfield? July is the sunniest month with an average of 320 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.