Weather is only one factor, but it can really affect your travel plans, especially if you're planning an extended stay in Chernihiv. The hottest months are usually August and July with an average temp of 66°F, while the coldest months are January and February with an average of 28°F. The snowiest months in Chernihiv are January, December, February, and November, with each month seeing an average of 22 inches of snowfall.