During the spring, lower elevations usually melt out by the end of April. As a rule of thumb, hiking trails on the edges of the park tend to be snow free quicker than towards the continental divide or middle of the park. In the mid to higher elevations, trails generally are under 100 percent snow cover in the spring. Some trails do not melt out entirely until late July. See the Trail and Area Closings and Postings page or check with a visitor center, ranger station or park headquarters for the most current information.
Camping is available year round at Apgar and St. Mary Campgrounds. Apgar Campground is on the west side of the park, located in the Apgar Picnic Area. St. Mary Campground is located just inside the Park Boundary in St. Mary. There is no running water and flush toilets at either of these campgrounds in late fall, winter and early spring. By early-May, water is turned on at the Apgar Campground and its status changes to full service. By July 1, all of our auto campgrounds are open for the summer season. For more information on our auto campgrounds, please visit our camping page.
Spring backcountry camping can be challenging with many of the campgrounds and trails still under snow. A backcountry camping permit is required and can be obtained from the Apgar Backcountry Office. Trip planning information is available on our Backcountry page or by calling 406-888-7800.
For operating dates and hours of our visitor centers, backcountry offices and ranger stations, please visit our Operating Hours and Seasons page.