West Yellowstone, WY Weather & Growing Conditions
Today
49°F
Patchy Fog
Patchy fog and a slight chance of rain showers before 7am, then a chance of rain showers and patchy fog between 7am and 9am, then patchy fog and showers and thunderstorms likely between 9am and 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers and thunderstorms likely between 4pm and 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 49. West wind around 3 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 49°F | Patchy Fog | 3 mph W | 58% |
| Tonight | 30°F | Chance Showers And Thunderstorms then Patchy Fog | 2 mph NW | 37% |
| Sunday | 51°F | Slight Chance Rain Showers then Partly Sunny | 2 mph WNW | 19% |
| Sunday Night | 30°F | Partly Cloudy | 2 mph SSW | 5% |
| Monday | 60°F | Sunny | 3 mph SSW | 1% |
| Monday Night | 32°F | Mostly Clear | 3 mph SSW | 0% |
| Tuesday | 62°F | Mostly Sunny | 3 mph SSW | 0% |
| Tuesday Night | 34°F | Partly Cloudy | 2 mph S | 9% |
| Wednesday | 61°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 mph SSW | 14% |
| Wednesday Night | 34°F | Mostly Clear | 3 mph S | 3% |
| Thursday | 64°F | Sunny | 3 mph SSW | 3% |
| Thursday Night | 35°F | Mostly Clear | 1 to 5 mph S | 1% |
| Friday | 64°F | Mostly Sunny | 5 mph S | 2% |
| Friday Night | 36°F | Partly Cloudy | 5 mph SSW | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for West Yellowstone, WY
Growing season
28 days
Hardiness zone
4b
Explore more for West Yellowstone, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Old Faithful, Wy (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.