average daily temperature ranges from , with spikes sinking below during colder months and afternoons above during the hotter months in dryer years. Overall, the island experiences below freezing temperatures about two thirds of the year. Access Access is by boat only and for day-use only. There are 56 private lots on the island, about each. Gallery References Further reading External links Wild Horse Island State Park Montana Fish, Wildlife & Parks Wild Horse Island State Park Trail Map Montana Fish, Wildlife & Parks Landforms of Lake County, Montana Lake islands of Montana Protected areas established in 1977