Open year round. Our family loves Silver Falls State Park. I suggest visiting the park in a week day to avoid crowds. This is a popular spot for travelers and it can be hard to book campsites in advance. The falls loop is around 7 miles and can easily take a full day to see everything. Pack a picnic and enjoy the south falls area. Stargazing is a great activity in the meadow. They DO have a store, event center, and educational center on site for assistance. Friendly staff. Worth seeing. They have a great Christmas Festival that we volunteer at every year.