Planning for the weather is a good way to make your trip to Karlsborg relaxing and enjoyable, especially when you're splurging. The hottest months are usually July and August with an average temp of 59°F, while the coldest months are February and January with an average of 32°F. The snowiest months in Karlsborg are December, January, February, and November, with each month seeing an average of 11 inches of snowfall.