Weather is probably a major factor when you plan your trip to Baykalsk, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and June with an average temp of 56°F, while the coldest months are January and February with an average of 6°F. The snowiest months in Baykalsk are April, January, December, and February, with each month seeing an average of 12 inches of snowfall.