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

31°F

-1°C

Humidity 78%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Last update 16 Apr 12:15 PM MDT
Extended Forecast for

Mammoth WY

Winter Storm Warning April 16, 12:42pm until April 17, 06:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning April 16, 12:42pm until April 17, 06:00am

    NOW until 6:00am Fri

    Winter Storm Warning

  • This Afternoon

    High: 31 °F

    Snow Showers
    Likely

  • Tonight

    Tonight: Snow showers likely before 11pm, then a slight chance of snow showers after 4am. Mostly cloudy, with a low around 19. Northwest wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 19 °F

    Snow Showers
    Likely then
    Slight Chance
    Snow Showers

  • Friday

    Friday: Snow showers likely, mainly after 4pm. Some thunder is also possible. Partly sunny, with a high near 38. Light and variable wind becoming west northwest 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 38 °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 17. Northwest wind 5 to 9 mph becoming calm. Winds could gust as high as 21 mph.

    Low: 17 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 49. Southwest wind 5 to 10 mph, with gusts as high as 23 mph.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. Southwest wind 6 to 10 mph becoming south southeast after midnight. Winds could gust as high as 23 mph.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. South southeast wind around 7 mph.

    High: 59 °F

    Sunny

  • Sunday Night

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

    Low: 35 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Snow showers likely. Some thunder is also possible. Mostly cloudy, with a high near 31. Southwest wind 10 to 14 mph becoming northwest. Winds could gust as high as 21 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 2 to 4 inches possible.
Tonight
Snow showers likely before 11pm, then a slight chance of snow showers after 4am. Mostly cloudy, with a low around 19. Northwest wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely, mainly after 4pm. Some thunder is also possible. Partly sunny, with a high near 38. Light and variable wind becoming west northwest 5 to 9 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Friday Night
A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 17. Northwest wind 5 to 9 mph becoming calm. Winds could gust as high as 21 mph.
Saturday
Sunny, with a high near 49. Southwest wind 5 to 10 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 26. Southwest wind 6 to 10 mph becoming south southeast after midnight. Winds could gust as high as 23 mph.
Sunday
Sunny, with a high near 59. South southeast wind around 7 mph.
Sunday Night
Mostly cloudy, with a low around 35.
Monday
Sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Sunny, with a high near 69.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 42.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 65.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
12:33 pm MDT Apr 16, 2026
Forecast Valid:
12pm MDT Apr 16, 2026-6pm MDT Apr 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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