Planning for the weather is an important factor for making your trip to Mauston a success, especially when you’re splurging. The hottest months are usually July and August with an average temp of 67°F, while the coldest months are January and February with an average of 24°F. The snowiest months in Mauston are January, April, March, and December, with each month seeing an average of 9 inches of snowfall.