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

21°F

-6°C

Humidity 89%
Wind Speed WSW 0 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Last update 17 Apr 12:15 AM MDT
Extended Forecast for

Mammoth WY

Winter Storm Warning April 17, 12:33am until April 17, 06:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning April 17, 12:33am until April 17, 06:00am

    NOW until 6:00am Fri

    Winter Storm Warning

  • Overnight

    Low: 18 °F

    Chance Snow
    Showers

  • Friday

    Friday: A 50 percent chance of snow showers, mainly after 11am. Some thunder is also possible. Partly sunny, with a high near 38. South southwest wind 5 to 11 mph becoming north northwest in the morning. New snow accumulation of less than one inch possible.

    High: 38 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of snow showers, mainly before 10pm. Partly cloudy, with a low around 18. Northwest wind 5 to 9 mph becoming light and variable. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 49. Southwest wind 5 to 11 mph, with gusts as high as 25 mph.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. South wind 6 to 11 mph, with gusts as high as 25 mph.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Southwest wind around 7 mph, with gusts as high as 20 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 35. South southeast wind around 7 mph.

    Low: 35 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

Detailed Forecast

Overnight
A chance of snow showers between 2am and 3am. Mostly cloudy, with a low around 18. West northwest wind around 6 mph becoming southwest. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Friday
A 50 percent chance of snow showers, mainly after 11am. Some thunder is also possible. Partly sunny, with a high near 38. South southwest wind 5 to 11 mph becoming north northwest in the morning. New snow accumulation of less than one inch possible.
Friday Night
A 30 percent chance of snow showers, mainly before 10pm. Partly cloudy, with a low around 18. Northwest wind 5 to 9 mph becoming light and variable. New snow accumulation of less than a half inch possible.
Saturday
Sunny, with a high near 49. Southwest wind 5 to 11 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 26. South wind 6 to 11 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 60. Southwest wind around 7 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 35. South southeast wind around 7 mph.
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 rain and snow showers. Partly cloudy, with a low around 42.
Wednesday
A chance of rain and snow showers. Some thunder is also possible. Mostly sunny, with a high near 65.
Wednesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 40.
Thursday
A chance of rain and snow showers. Partly sunny, with a high near 56.
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:
11:02 pm MDT Apr 16, 2026
Forecast Valid:
12am MDT Apr 17, 2026-6pm MDT Apr 23, 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