Taking into account the local weather in Naro-Osanovo can help you maximize your time at the pool during your trip. 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 23°F. The snowiest months in Naro-Osanovo are December, January, November, and February, with each month seeing an average of 44 inches of snowfall.