Boundary Campground is located in the North Cascades National Park in Washington. This first-come, first-served campground has 32 campsites and offers beautiful views of the surrounding mountains and forests. Nearby activities include hiking, fishing, and wildlife watching. Amenities include fire rings, picnic tables, potable water, and flush toilets. The best time to visit is from June to September with average temperatures ranging from 50 to 80 degrees Fahrenheit. Be sure to bring warm clothing as temperatures can drop at night, even in the summer.