Glacier National Park
snow clouds over mountains and valley
Weather
 


Glacier National Park's weather varies as much as its dramatic scenery. Always keep an outfit of warm clothes handy, even in the summer. The weather can change on you in an instant. A Parkcamper employee was in Glacier National Park last August when it snowed! Temperatures upslope are typically 15-20 degrees cooler. Expect temps to often drop 20 degrees at night. Always pack a windbreaker. Glacier National Park can be incredibly windy, and the winds can cut right through the best sweater you have. Typically the east side is cooler as the elevations are considerably higher. It is also usually much more windy on the east side.

Make sure you have an appropriate sleeping bag. Many people learn this lesson the hard way and it can ruin a trip. For the summer, I recommend a bag rated at +40, synthetic or down. For fall and spring(this includes late August to November and April through May) I recommend a quality down bag rated to +20. Often times the temp ratings on bags are about ten degrees warmer than you would think. Usually a quality +20 synthetic is good at around +30 in real world use. Some +20 synthetics are only good for around +45 at best. It's not uncommon. A good quality down bag will usually be right in line with its temp rating. In late June, July and early August you can get by with a pretty cheap bag. Don't try it in other months though. Also, Two Medicine and Many Glacier are two thousand feet higher than Apgar and Fish Creek, and usually much windier. They will almost always be colder.

Click for West Glacier, Montana Forecast

Click for Saint Mary, Montana Forecast

January average high: 28 low: 14
July average high: 79 low 47
October average high: 52 low: 31
May average high: 64 low: 37

 

 

 

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