Find hotels in Bison, SD from CA $96

The best time to go to Bison, South Dakota, is during the summer months, from June to August, or in early autumn, particularly September.Summer offers the warmest weather, with average daytime temperatures often in the mid-20s Celsius. This period is ideal for exploring the natural beauty of the surrounding area, such as the Grand River National Grassland, which is superb for hiking and wildlife spotting. Families often find the summer months most convenient for travel due to school holidays, allowing for longer trips to enjoy the outdoors.September brings cooler, more comfortable temperatures, typically ranging from the mid-teens to low 20s Celsius, and the landscape begins to show hints of autumn colours. This time of year is excellent for couples looking for a more peaceful experience, as the peak tourist season has passed, offering a quieter chance to appreciate the open spaces and clear skies.