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

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

41°F

5°C

Humidity 82%
Wind Speed NW 8 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Wind Chill36°F (2°C)
Last update 04 Oct 06:15 PM MDT
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: Showers likely. Cloudy, with a low around 34. Northwest wind 6 to 13 mph. Chance of precipitation is 70%.

    Low: 34 °F

    Showers
    Likely

  • Sunday

    Sunday: Rain and snow showers likely, becoming all rain after 11am. Snow level 6700 feet. Mostly cloudy, with a high near 47. Northwest wind 6 to 13 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 47 °F

    Rain/Snow
    Likely then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Isolated showers before 7pm. Mostly cloudy, with a low around 27. Northwest wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 20%.

    Low: 27 °F

    Isolated
    Showers then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 27. Calm wind becoming southeast around 6 mph after midnight.

    Low: 27 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 61. Southeast wind 3 to 6 mph.

    High: 61 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 33. South southeast wind 7 to 10 mph.

    Low: 33 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers likely. Cloudy, with a low around 34. Northwest wind 6 to 13 mph. Chance of precipitation is 70%.
Sunday
Rain and snow showers likely, becoming all rain after 11am. Snow level 6700 feet. Mostly cloudy, with a high near 47. Northwest wind 6 to 13 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday Night
Isolated showers before 7pm. Mostly cloudy, with a low around 27. Northwest wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Monday
Sunny, with a high near 54. Light and variable wind.
Monday Night
Mostly clear, with a low around 27. Calm wind becoming southeast around 6 mph after midnight.
Tuesday
Sunny, with a high near 61. Southeast wind 3 to 6 mph.
Tuesday Night
Clear, with a low around 33. South southeast wind 7 to 10 mph.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 36.
Friday
Sunny, with a high near 67.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 38.
Saturday
A chance of showers. Mostly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
6:20 pm MDT Oct 4, 2025
Forecast Valid:
7pm MDT Oct 4, 2025-6pm MDT Oct 11, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation