If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Banska Bystrica: The hottest months are usually August and July with an average temp of 63°F, while the coldest months are January and February with an average of 30°F. The snowiest months in Banska Bystrica are December, November, January, and February, with each month seeing an average of 8 inches of snowfall.