Visiting local bars in Greenfield is better when the weather is good. These rainfall averages and temperatures can help you choose the best time for bar-hopping. The hottest months are usually July and August, with an average temperature of 22°C, while the coldest months are January and February, with an average of -2°C. The snowiest months in Greenfield are January, November, December and February, with each month seeing an average of 18 cm of snowfall.