West Yellowstone (MT) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit West Yellowstone.
Climate overview of West Yellowstone
The climate in West Yellowstone, Montana, United States of America, is marked by large temperature swings across the seasons, ranging from 27°C (81°F) in July to -3°C (27°F) in December.
The city receives around 648 mm (26 in) of rain/snowfall per year. It experiences a distinct dry season from July to September, with warm summers and very cold winters. December is the wettest month and August the driest.
West Yellowstone Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in West Yellowstone - and find the best time to visit.
Monthly Temperature in West Yellowstone
In West Yellowstone, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold -3°C (27°F) in December.
Nighttime temperatures range from 5°C (41°F) in July to -16°C (3°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in West Yellowstone
On average, West Yellowstone receives a reasonable amount of rain/snowfall, with an annual precipitation of 648 mm (26 in). The seasons in West Yellowstone bring significant changes in precipitation. The wettest month, December, receives moderate snowfall, with an average of 80 mm (3.1 in) of precipitation. This snowfall is distributed across 16 snowy days.
In contrast, the driest month, August, experiences much less rainfall, totaling 27 mm (1.1 in) over 8 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our West Yellowstone Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit West Yellowstone
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Fewest rainy days: July, August and September
- Seasonal pattern: A distinct dry season from July to September, with warm summers and very cold winters
- Coldest conditions: December, with freezing nights around -16°C (3°F).
Frequently asked questions about the climate in West Yellowstone
What is the best time to visit West Yellowstone?
June, July, August and September typically offer the most optimal weather in West Yellowstone. In contrast, January, February, March, April, November and December tend to have less optimal conditions. West Yellowstone has a distinct dry season from July to September, with warm summers and very cold winters.
What temperatures can I expect in West Yellowstone?
Daytime highs range from -3°C (27°F) in December to 27°C (81°F) in July. Nighttime lows range from -16°C (3°F) to 5°C (41°F). Temperatures vary considerably through the year.
How much rain does West Yellowstone get?
Annual rainfall is around 648 mm (26 in). December is the wettest month with 80 mm (3.1 in), while August is the driest with 27 mm (1.1 in). In the coldest months, precipitation may fall as snow.
West Yellowstone 3-Day Forecast
West Yellowstone on the map
West Yellowstone is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Kissimmee
33°C (91°F) Orlando33°C (91°F) Miami Beach32°C (90°F) Destin32°C (90°F) New York City
29°C (84°F) Big Bear Lake
27°C (81°F) Los Angeles
24°C (75°F) San Francisco22°C (72°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.