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Weather in West Yellowstone, MT · National Weather Service + NOAA

West Yellowstone is snow country

West Yellowstone has cold, snowy winters and pleasant summers. A typical July afternoon reaches 77°, a January night drops to 4°, and about 177 inches of snow falls in a normal winter. A typical November afternoon reaches 35°, and nights fall to 14°.

Winter 27°/5°Spring 48°/22°Summer 74°/39°Fall 51°/24°
Right now
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Sunrise 7:05 am · sunset 5:10 pm

Getting the latest forecast from the National Weather Service…

What stands out about West Yellowstone’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Snow countryAbout 177 inches a winter, more than 401 of 404 Montana towns.It hardly ever freezesOnly 100% of years see a night at 32° or below.Cool summersJuly afternoons average 77°, cooler than 96% of U.S. towns.Among Montana’s coldest wintersJanuary nights average 4°, colder than 452 of 497 Montana towns.
A normal year

Where today sits in West Yellowstone’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
27° / 5°
49 days with an inch or more of snow
Spring
48° / 22°
Frost is rare by spring
Summer
74° / 39°
2 days reach 90° in a normal year
Fall now
51° / 24°
Mild well into the fall
Best months to be outside
Jul
Highs of 62–84° and lows of 40° or more
How much snow does West Yellowstone get?About 177 inches a winter.When is it wettest?December, with 3.3 inches.Is it warmer than it used to be?+1.3° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in West Yellowstone.

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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for West Yellowstone itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Hebgen Dam, MT (18 mi, snow) and West Yellowstone Gateway, MT (1 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.