The best time to go to Grantsburg is during the summer months, from June to August, and the early fall, in September and October.Summer offers warm weather ideal for enjoying the area's many lakes and outdoor activities. You can expect temperatures ranging from the mid-70s to low 80s Fahrenheit, superb for swimming, boating, and fishing on Wood Lake or venturing out to the nearby St. Croix National Scenic Riverway. This season is particularly appealing for families looking for a relaxing lakeside vacation with plenty of opportunities for outdoor fun.Early fall provides comfortable temperatures, generally in the 60s Fahrenheit, along with the beautiful changing colors of the leaves. It's an excellent time for hiking and enjoying the scenic beauty of the surrounding forests, such as those found in the Governor Knowles State Forest.