When you’re planning your stay in Nizhny Novgorod, year-round temperatures and rainfall may be important factors to consider. The hottest months are usually July and August with an average temp of 63°F, while the coldest months are January and February with an average of 19°F. The snowiest months in Nizhny Novgorod are January, February, March, and December, with each month seeing an average of 129 inches of snowfall.