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

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. Some snow and a wintry mix is occurring today to the north. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

24°F

-4°C

Humidity 90%
Wind Speed S 1 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 05 Dec 07:15 AM MST
Extended Forecast for

Mammoth WY

Winter Weather Advisory December 5, 07:41am until December 6, 02:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 5, 07:41am until December 6, 02:00pm

    NOW until 2:00pm Sat

    Winter Weather Advisory

  • Today

    High: 33 °F

    Snow Showers
    Likely

  • Tonight

    Tonight: Snow showers, mainly before 1am. Temperature rising to around 35 by 2am. South wind 9 to 14 mph becoming west northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 30 °F⇑

    Snow Showers
    then Snow
    Showers
    Likely

  • Saturday

    Saturday: Snow showers likely, mainly before 11am. Mostly cloudy, with a high near 37. West wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 21. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: A 20 percent chance of snow showers after 11am. Partly sunny, with a high near 35. Southwest wind 8 to 10 mph, with gusts as high as 22 mph.

    High: 35 °F

    Slight Chance
    Snow Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of snow showers. Mostly cloudy, with a low around 27. Southwest wind 9 to 11 mph, with gusts as high as 23 mph.

    Low: 27 °F

    Chance Snow
    Showers

  • Monday

    Monday: Partly sunny, with a high near 39. South southwest wind 8 to 11 mph, with gusts as high as 24 mph.

    High: 39 °F

    Partly Sunny

  • Monday Night

    Monday Night: A slight chance of snow showers before 11pm, then a chance of rain and snow showers. Snow level rising to 6100 feet after midnight. Mostly cloudy, with a low around 32. Breezy. Chance of precipitation is 40%.

    Low: 32 °F

    Chance
    Rain/Snow and
    Breezy

Detailed Forecast

Today
A chance of snow showers before 10am, then snow showers likely after 3pm. Increasing clouds, with a high near 33. South wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow showers, mainly before 1am. Temperature rising to around 35 by 2am. South wind 9 to 14 mph becoming west northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Saturday
Snow showers likely, mainly before 11am. Mostly cloudy, with a high near 37. West wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday Night
A 30 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 21. Southwest wind around 10 mph, with gusts as high as 20 mph.
Sunday
A 20 percent chance of snow showers after 11am. Partly sunny, with a high near 35. Southwest wind 8 to 10 mph, with gusts as high as 22 mph.
Sunday Night
A 50 percent chance of snow showers. Mostly cloudy, with a low around 27. Southwest wind 9 to 11 mph, with gusts as high as 23 mph.
Monday
Partly sunny, with a high near 39. South southwest wind 8 to 11 mph, with gusts as high as 24 mph.
Monday Night
A slight chance of snow showers before 11pm, then a chance of rain and snow showers. Snow level rising to 6100 feet after midnight. Mostly cloudy, with a low around 32. Breezy. Chance of precipitation is 40%.
Tuesday
Rain and snow showers likely. Snow level 6400 feet. Mostly cloudy, with a high near 42. Breezy. Chance of precipitation is 60%.
Tuesday Night
Rain and snow showers likely, becoming all snow after 11pm. Mostly cloudy, with a low around 25. Chance of precipitation is 60%.
Wednesday
Snow showers likely, possibly mixed with rain. Mostly cloudy, with a high near 40.
Wednesday Night
A chance of rain and snow showers. Snow level 6000 feet. Mostly cloudy, with a low around 31.
Thursday
A chance of rain and snow showers. Snow level 5900 feet. Partly sunny, with a high near 41.
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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:
7:18 am MST Dec 5, 2025
Forecast Valid:
7am MST Dec 5, 2025-6pm MST Dec 11, 2025
 
Forecast Discussion
 
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Additional Resources

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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