The best times to visit West Glacier for ideal weather are

June 18th to September 9th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other West Glacier Travel Info

Weather in West Glacier

Temperature

Average temperatures in West Glacier vary drastically. Considering humidity, temperatures feel cold for most of the year with a fair chance of precipitation about half of the year. The area is less temperate than some — in the 21st percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit West Glacier, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 81.3°F (27.4°C) with temperatures rarely dropping below 50.9°F (10.5°C) at night.

West Glacier Temperatures (Fahrenheit)

Key
High
Average
Low

West Glacier Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

West Glacier Perceived Temperature (F)

Key
High
Average
Low

West Glacier Perceived Temperature (C)

Key
High
Average
Low

 

Average West Glacier Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 37.1 25.3 15.1
Feb 37.3 24.1 13.5
Mar 45.3 32.7 22.7
Apr 52.6 39.6 28.5
May 62.7 49.3 37.2
Jun 70.7 57.1 44.3
Jul 80.6 64.8 50.2
Aug 80 63.2 48.1
Sep 71.7 55.1 41.4
Oct 57.8 43.8 32.6
Nov 44 32.1 22.3
Dec 33.9 22.1 12

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 2.8 -3.7 -9.4
Feb 2.9 -4.4 -10.3
Mar 7.4 0.4 -5.2
Apr 11.4 4.2 -1.9
May 17.1 9.6 2.9
Jun 21.5 13.9 6.8
Jul 27 18.2 10.1
Aug 26.7 17.3 8.9
Sep 22.1 12.8 5.2
Oct 14.3 6.6 0.3
Nov 6.7 0.1 -5.4
Dec 1.1 -5.5 -11.1

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in West Glacier are July, August, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late June. For example, on the week of June 25th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early June with an average of 2 days of significant precipitation the week of June 4th.

When can you find snow in West Glacier? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in West Glacier.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in West Glacier (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 21% 0 2.1
Feb 21% 0 1.9
Mar 23% 0 2.9
Apr 24% 0 2.5
May 19% 0 2.4
Jun 19% 0 3.2
Jul 12% 0 1.3
Aug 12% 0 1.2
Sep 15% 0 1.6
Oct 17% 0 1.9
Nov 22% 0 2.7
Dec 24% 0 2.4

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 21 0 5.3
Feb 21 0 4.8
Mar 23 0 7.4
Apr 24 0 6.4
May 19 0 6.1
Jun 19 0 8.1
Jul 12 0 3.3
Aug 12 0 3
Sep 15 0 4.1
Oct 17 0 4.8
Nov 22 0 6.9
Dec 24 0 6.1

 

Humidity and Wind

West Glacier has some comfortably humid months, with slightly drier months on the other side of the year. The least humid month is August (44.6% relative humidity), and the most humid month is December (56.3%).

Wind in West Glacier is usually calm. The windiest month is January, followed by April and November. January’s average wind speed of around 8 knots (9.2 MPH or 14.8 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early January where average top sustained speeds reach 16.3 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in West Glacier.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 8 Gentle breeze 15.2 Significant breeze
Feb 6.7 Light breeze 12.7 Significant breeze
Mar 7.4 Gentle breeze 13.9 Significant breeze
Apr 7.6 Gentle breeze 14.1 Significant breeze
May 6.8 Light breeze 12.8 Significant breeze
Jun 6.2 Light breeze 12.3 Significant breeze
Jul 5.3 Light breeze 10.7 Significant breeze
Aug 4.9 Light breeze 10.4 Gentle breeze
Sep 5.4 Light breeze 11.2 Significant breeze
Oct 5.9 Light breeze 12.6 Significant breeze
Nov 7.5 Gentle breeze 14.5 Significant breeze
Dec 6.9 Light breeze 13.5 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 50.2%
Feb 55.4%
Mar 50.1%
Apr 46.8%
May 48.5%
Jun 50.6%
Jul 47.1%
Aug 44.6%
Sep 45.7%
Oct 48.7%
Nov 49.5%
Dec 56.3%

 

Is it Safe to Travel to West Glacier?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Dec 04, 2023.


 

The Busiest and Least Crowded Months

The busiest month for tourism in West Glacier, MT, US is July, followed by June and August. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit West Glacier in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 46.8 in December means 46.8% of the tourists vs. July.

 

 

Overall West Glacier Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 66.6°F (19.2°C) and 36.7°F (2.6°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 7 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see the least precipitation with 4 to 6 days of precipitation per month. June – August is the busiest season for tourism in West Glacier, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 73.4°F (23°C) and 37.8°F (3.2°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 4 to 7 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is far too cold this time of year in West Glacier to be enjoyable for warm weather travelers. The average high during this season is between 40.7°F (4.8°C) and 31.6°F (-0.2°C). On average, it rains or snows a fair amount: 6 to 7 times per month. These times of year are the slowest with tourists.

 

Best Times to Travel› the United States › West Glacier, MT, US