National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

Lat: 44.977222°NLon: 110.695278°WElev: 6138.0ft.

NA

11°C

52°F

Humidity 46%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 0°C (32°F)
Visibility NA
Last update 06 Oct 09:15 AM MDT
Extended Forecast for

Mammoth WY

  • Today

    Today: Sunny, with a high near 26. Light and variable wind becoming northwest 6 to 11 km/h in the afternoon.

    High: 26 °C

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 7. West northwest wind 5 to 8 km/h becoming south after midnight.

    Low: 7 °C

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 25. Calm wind becoming northwest 5 to 10 km/h in the afternoon.

    High: 25 °C

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 6. Northwest wind 5 to 8 km/h becoming south southeast after midnight.

    Low: 6 °C

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 24. Calm wind becoming west southwest 5 to 10 km/h in the afternoon.

    High: 24 °C

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 6. West southwest wind 10 to 13 km/h becoming south after midnight.

    Low: 6 °C

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 23. Breezy, with a south wind 13 to 18 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 50 km/h.

    High: 23 °C

    Sunny then
    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 8.

    Low: 8 °C

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers, mainly after noon. Partly sunny, with a high near 19.

    High: 19 °C

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 26. Light and variable wind becoming northwest 6 to 11 km/h in the afternoon.
Tonight
Mostly clear, with a low around 7. West northwest wind 5 to 8 km/h becoming south after midnight.
Wednesday
Sunny, with a high near 25. Calm wind becoming northwest 5 to 10 km/h in the afternoon.
Wednesday Night
Mostly clear, with a low around 6. Northwest wind 5 to 8 km/h becoming south southeast after midnight.
Thursday
Sunny, with a high near 24. Calm wind becoming west southwest 5 to 10 km/h in the afternoon.
Thursday Night
Mostly clear, with a low around 6. West southwest wind 10 to 13 km/h becoming south after midnight.
Friday
Sunny, with a high near 23. Breezy, with a south wind 13 to 18 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 50 km/h.
Friday Night
Partly cloudy, with a low around 8.
Saturday
A 30 percent chance of showers, mainly after noon. Partly sunny, with a high near 19.
Saturday Night
Showers likely and possibly a thunderstorm, then showers after midnight. Low around 4. Chance of precipitation is 80%.
Sunday
Rain and snow showers. Mostly cloudy, with a high near 10.
Sunday Night
Rain and snow showers. Mostly cloudy, with a low around 1.
Columbus Day
A chance of rain and snow showers. Mostly cloudy, with a high near 11.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 m)
Last Update:
10:02 am MDT Oct 6, 2026
Forecast Valid:
10am MDT Oct 6, 2026-6pm MDT Oct 12, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation