The best time to go to Marshall, Minnesota, is during the summer months, from June to August, and the early fall, in September and October.Summer offers warm weather, with average temperatures in the 70s and 80s Fahrenheit, making it ideal for outdoor activities. You can enjoy the numerous parks, golf courses, and various community events like the Lyon County Fair. This period is particularly good for families looking for pleasant weather to explore.Early fall provides comfortable, cooler temperatures, typically in the 50s and 60s Fahrenheit, along with the scenic beauty of changing leaves. This time is excellent for those who enjoy hiking or biking on local trails, experiencing the autumn colors, and attending harvest festivals.