Visiting local bars in Penza is more fun when you know what the weather holds. These rainfall averages and temperatures can help you decide the best time for bar hopping. The hottest months are usually July and August with an average temp of 65°F, while the coldest months are January and February with an average of 20°F. The snowiest months in Penza are February, March, January, and December, with each month seeing an average of 74 inches of snowfall.