Other facts from our historical weather data: Which is the warmest month in Field? July has an average maximum temperature of 18°C (64°F) and is the warmest month of the year. Which is the coldest month in Field? The coldest month is December with an average maximum temperature of -11°C (12°F). Which is the wettest month in Field? June tops the wettest month list with 116mm (4.6 in) of rainfall. Which is the driest month in Field? February is the driest month with 50mm (2 in) of precipitation. Which is the sunniest month in Field? July is the sunniest month with an average of 255 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.