Glacier's weather is highly variable and can be extreme. Warm days and cool nights are the norm in summer. Even when it's in the 80s and 90s in the daytime it can cool down into the 40s at night. Hikers setting out on a warm summer day, should still bring along raingear and lots of extra clothing.

Know what's coming with AccuWeather's extended daily forecasts for Glacier National Park, MT. Up to 90 days of daily highs, lows, and precipitation chances.

Weather is always unpredictable but especially so in Glacier. Spring brings a mix of weather patterns through the park. One day it may be in the high 60s and 70s and the next it barely cracks the 50s. Rain is frequent and welcomed by emerging spring wildflowers. Come prepared for changing conditions and potentially cold and blustery days.

Glacier Park’s climate is wet and windy. As one of the wettest locations in Montana, the park receives an average of 42 inches of annual precipitation, with western park areas gleaning the most moisture, growing drier as you move in an easterly direction. This phenomenon is in part due to frequent Chinook winds, blowing from the south and southwest.

Dew Point: 41 °F. Wind: 5 mph. Pressure: 30.02 "Hg. Visibility: 13 mi. October Climate & Weather Averages in Glacier National Park. High Temp: 56 °F. Low Temp: 30 °F. Mean Temp: 43 °F. Precipitation: 0.60".

This extreme weather conditions are caused by the clash of two different climates. While Arctic air brings cold and dry weather,\r\nfrom the Pacific Glacier National Park gets warm air. In spring highs range from 38°F (3°C)\r\nto 70°F (22°C) from March through May. Expect 12 days of rain per month.