Glacier National Park Glacier National Park is open every day of the year. Winter weather however, tends to dictate when most visitor facilities open and close. Generally from late May to early September, facilities are open to welcome summer visitors. Many people enjoy the "off-seasons" as a time when the park is a bit quieter. Late September and October can be spectacular, but visitors will need to be more self relient, as facilities are closing down for the season. Winter provides a carpet of snow that makes for some good cross-country skiing opportunities. Spring tends to arrive late and last a very brief time, but can provide an interesting and quiet experience. During the shoulder seasons, and in winter, lodging and other guest services are available in gateway communities. Contact local Chambers of Commerce for more information. Visitor Centers throughout the park open and close at different times during the year and are staffed with Park Rangers who provide interpretation and information to help in trip planning. 2012 Visitor Information Hours Apgar Backcountry Permit Office May 1 - September 29: 7:00am to 4:30pm September 30 - October 31: 8:00am to 3:30pm Apgar Visitor Center May 1 - June 16: 9:00am to 5:00pm June 17 - September 3: 8:00am to 6:00pm September 4 - September 30: 8:00am to 5:00pm October 1 - October 20: 9:00am to 4:30pm October 27 - April 30, 2013: Weekends only, 9:00am to 4:30pm St. Mary Visitor Center May 22 - June 16: 8:00am to 5:00pm June 17 - September 3: 8:00am to 9:00pm September 4 - September 30: 8:00am to 5:00pm Many Glacier & Two Medicine Ranger Stations May 27 - September 21: 7:00am to 5:00pm Logan Pass Visitor Center Opening is weather dependant Opening - September 3: 9:00am to 7:00pm September 4 - September 30: 9:30am to 4:30pm Park Headquarters Monday - Friday (closed holidays): 8:00am to 4:30pm year round, closed for lunch from 12:00pm to 12:30pm in the fall, winter and spring. Park Roads Portions of the Going-to-the-Sun Road remain open all year and provide access to many locations and activities. Ten miles of the Going-to-the-Sun Road (from park headquarters at West Glacier to Lake McDonald Lodge) are maintained throughout the winter providing access to winter recreation opportunities at the head of the lake. Frequently asked questions and answers about the Going-to-the-Sun Road can be found here . Plowing park roads and the Going-to-the-Sun Road is a monumental challenge each year. Unpredictable spring snow storms or other weather related events can slow down plowing progress. It is not uncommon for plowing crews to need to re-plow sections of park roads when weather events happen. Safety for our plowing crews, contractors, and the public is our utmost concern and priority. These unknown factors make predicting the opening of the Going-to-the-Sun Road impossible..
Other park roads generally open in May, weather permitting.