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

28°F

-2°C

Humidity 97%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 16 Apr 07:15 AM MDT
Extended Forecast for

Mammoth WY

Winter Storm Warning April 16, 08:26am until April 17, 06:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning April 16, 08:26am until April 17, 06:00am

    NOW until 6:00am Fri

    Winter Storm Warning

  • Today

    High: 39 °F

    Snow Showers
    Likely

  • Tonight

    Tonight: A 40 percent chance of snow showers, mainly before 8pm. Mostly cloudy, with a low around 18. West wind 6 to 11 mph. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Friday

    Friday: Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 39. Southwest wind 5 to 9 mph becoming northwest in the morning. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 19. West wind 5 to 9 mph becoming calm.

    Low: 19 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 50. South southwest wind 5 to 10 mph.

    High: 50 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. South wind 6 to 10 mph, with gusts as high as 23 mph.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. South southeast wind 6 to 8 mph, with gusts as high as 20 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Today
Snow showers likely. Some thunder is also possible. Mostly cloudy, with a high near 39. Southwest wind 10 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 2 to 4 inches possible.
Tonight
A 40 percent chance of snow showers, mainly before 8pm. Mostly cloudy, with a low around 18. West wind 6 to 11 mph. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 39. Southwest wind 5 to 9 mph becoming northwest in the morning. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday Night
A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 19. West wind 5 to 9 mph becoming calm.
Saturday
Sunny, with a high near 50. South southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 27. South wind 6 to 10 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 60. South southeast wind 6 to 8 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 67.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 40.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
6:02 am MDT Apr 16, 2026
Forecast Valid:
8am MDT Apr 16, 2026-6pm MDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation