18 June
Hunker down, Glacier National Park visitors: Winter’s not over yet.
Heavy rain and snow are expected to hit Tuesday as a potent upper-level trough of low pressure hits Northwest Montana.... ...
A winter storm watch has been issued for the West Glacier area with 2 to 6 inches of snow expected between 6,000 and 7,000 feet and 10 to 20 inches of snow possible over higher terrain.
East of the Continental Divide, a winter storm warning and a flood watch have been issued.
“Anyone going into the mountains of the Rocky Mountain Front, including Glacier National Park, should be prepared for heavy, wet snow,” the Weather Service advised.
Total snow accumulations of one to two feet are possible above 6,500 feet on the east side of Glacier Park and along the Rocky Mountain Front.
http://www.dailyinterlake.com/news/local_montana/heavy-rain-snow-to-hit-glacier-park/article_c11814a8-f59d-11e3-b278-0019bb2963f4.html