The best times to visit West Yellowstone 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.
West Yellowstone Travel Guide
Other West Yellowstone Travel Info
Weather in West Yellowstone
Average temperatures in West Yellowstone vary an incredible amount. Considering humidity, temperatures feel cold for most of the year with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 40th 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 Yellowstone, 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 79.1°F (26.2°C) with temperatures rarely dropping below 44.6°F (7°C) at night.
West Yellowstone Temperatures (Fahrenheit)
West Yellowstone Temperatures (Celsius)
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 Yellowstone Perceived Temperature (F)
West Yellowstone Perceived Temperature (C)
Average West Yellowstone 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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
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 Yellowstone.
Snow on the Ground
The graph below shows the average snow on the ground in West Yellowstone (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
West Yellowstone has some very humid months, with other moderately humid months on the other side of the year. The least humid month is September (42% relative humidity), and the most humid month is March (75.2%).
Wind in West Yellowstone is usually calm. The windiest month is March, followed by April and June. March’s average wind speed of around 7.5 knots (8.6 MPH or 13.8 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 late March where average top sustained speeds reach 20.4 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in West Yellowstone.
The graph below shows wind speed (max and average) in knots.
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||5.5||Light breeze||14.2||Significant breeze|
|Feb||5.6||Light breeze||15.3||Significant breeze|
|Mar||7.5||Gentle breeze||18.8||Significant breeze|
|Apr||6.1||Light breeze||16.7||Significant breeze|
|May||5.5||Light breeze||15.3||Significant breeze|
|Jun||5.9||Light breeze||15.8||Significant breeze|
|Jul||4.9||Light breeze||15.2||Significant breeze|
|Aug||4.9||Light breeze||15.2||Significant breeze|
|Sep||4.9||Light breeze||14.8||Significant breeze|
|Oct||4.7||Light breeze||14.5||Significant breeze|
|Nov||5.6||Light breeze||15.2||Significant breeze|
|Dec||4.6||Light breeze||12.7||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to West Yellowstone?
Our best data indicates this area is generally safe. As of Oct 07, 2019 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 Sep 23, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in West Yellowstone, 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 Yellowstone 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
Overall West Yellowstone Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel very cold. Highs range from 60.8°F (16°C) and 25.2°F (-3.8°C) with warmer temperatures in the later months. 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. June – August is the busiest season for tourism in West Yellowstone, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 69.5°F (20.8°C) and 29.1°F (-1.6°C), which will feel chilly given the humidity and wind. 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 Yellowstone to be enjoyable for warm weather travelers. The average high during this season is between 32°F (0°C) and 19.1°F (-7.2°C). These times of year are the slowest with tourists.