Visiting local bars in Pella is more fun 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 15°C, while the coldest months are January and February, with an average of 0°C. The rainiest months in Pella are October, November, May and August, with each month seeing an average of 209 mm of rainfall.