The best time to go to Afton, Minnesota, is during the summer months, from June to August, or in the autumn, from September to October.Summer offers the warmest weather, with average temperatures in the low to mid-20s Celsius, making it ideal for outdoor activities along the St. Croix River. You can enjoy paddleboarding, kayaking, or taking a boat tour. The Afton State Park is particularly pleasant for hiking and picnics during this time, with its trails leading to scenic bluffs overlooking the river.Autumn is another excellent choice, especially for those who appreciate natural beauty. The St. Croix Valley transforms with vibrant fall foliage, creating stunning landscapes. Temperatures are cooler, typically ranging from 10 to 20 degrees Celsius, which is superb for exploring local orchards and vineyards or enjoying a leisurely drive along the scenic byways.