Weather will likely play an important role when you plan your trip to Sergiyev Posad, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August with an average temp of 62°F, while the coldest months are January and February with an average of 21°F. The snowiest months in Sergiyev Posad are December, February, January, and November, with each month seeing an average of 20 inches of snowfall.